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-rw-r--r--drivers/clk/at91/at91rm9200.c21
-rw-r--r--drivers/clk/at91/at91sam9260.c26
-rw-r--r--drivers/clk/at91/at91sam9g45.c32
-rw-r--r--drivers/clk/at91/at91sam9n12.c36
-rw-r--r--drivers/clk/at91/at91sam9rl.c23
-rw-r--r--drivers/clk/at91/at91sam9x5.c28
-rw-r--r--drivers/clk/at91/clk-master.c337
-rw-r--r--drivers/clk/at91/clk-sam9x60-pll.c145
-rw-r--r--drivers/clk/at91/dt-compat.c15
-rw-r--r--drivers/clk/at91/pmc.h22
-rw-r--r--drivers/clk/at91/sam9x60.c51
-rw-r--r--drivers/clk/at91/sama5d2.c42
-rw-r--r--drivers/clk/at91/sama5d3.c38
-rw-r--r--drivers/clk/at91/sama5d4.c40
-rw-r--r--drivers/clk/at91/sama7g5.c223
-rw-r--r--drivers/clk/clk-axi-clkgen.c64
-rw-r--r--drivers/clk/clk-si5351.c13
-rw-r--r--drivers/clk/clk.c6
-rw-r--r--drivers/clk/ti/clk-54xx.c12
-rw-r--r--drivers/clk/ti/fapll.c11
20 files changed, 905 insertions, 280 deletions
diff --git a/drivers/clk/at91/at91rm9200.c b/drivers/clk/at91/at91rm9200.c
index 2c3d8e6ca63c..0fad1009f315 100644
--- a/drivers/clk/at91/at91rm9200.c
+++ b/drivers/clk/at91/at91rm9200.c
@@ -7,6 +7,8 @@
#include "pmc.h"
+static DEFINE_SPINLOCK(rm9200_mck_lock);
+
struct sck {
char *n;
char *p;
@@ -137,9 +139,20 @@ static void __init at91rm9200_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "pllack";
parent_names[3] = "pllbck";
- hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
- &at91rm9200_master_layout,
- &rm9200_mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
+ parent_names,
+ &at91rm9200_master_layout,
+ &rm9200_mck_characteristics,
+ &rm9200_mck_lock, CLK_SET_RATE_GATE,
+ INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres",
+ &at91rm9200_master_layout,
+ &rm9200_mck_characteristics,
+ &rm9200_mck_lock, CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
@@ -181,7 +194,7 @@ static void __init at91rm9200_pmc_setup(struct device_node *np)
for (i = 0; i < ARRAY_SIZE(at91rm9200_periphck); i++) {
hw = at91_clk_register_peripheral(regmap,
at91rm9200_periphck[i].n,
- "masterck",
+ "masterck_div",
at91rm9200_periphck[i].id);
if (IS_ERR(hw))
goto err_free;
diff --git a/drivers/clk/at91/at91sam9260.c b/drivers/clk/at91/at91sam9260.c
index bb81ff731ad8..ceb5495f723a 100644
--- a/drivers/clk/at91/at91sam9260.c
+++ b/drivers/clk/at91/at91sam9260.c
@@ -32,6 +32,8 @@ struct at91sam926x_data {
bool has_slck;
};
+static DEFINE_SPINLOCK(at91sam9260_mck_lock);
+
static const struct clk_master_characteristics sam9260_mck_characteristics = {
.output = { .min = 0, .max = 105000000 },
.divisors = { 1, 2, 4, 0 },
@@ -218,8 +220,8 @@ static const struct sck at91sam9261_systemck[] = {
{ .n = "pck1", .p = "prog1", .id = 9 },
{ .n = "pck2", .p = "prog2", .id = 10 },
{ .n = "pck3", .p = "prog3", .id = 11 },
- { .n = "hclk0", .p = "masterck", .id = 16 },
- { .n = "hclk1", .p = "masterck", .id = 17 },
+ { .n = "hclk0", .p = "masterck_div", .id = 16 },
+ { .n = "hclk1", .p = "masterck_div", .id = 17 },
};
static const struct pck at91sam9261_periphck[] = {
@@ -413,9 +415,21 @@ static void __init at91sam926x_pmc_setup(struct device_node *np,
parent_names[1] = "mainck";
parent_names[2] = "pllack";
parent_names[3] = "pllbck";
- hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
- &at91rm9200_master_layout,
- data->mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
+ parent_names,
+ &at91rm9200_master_layout,
+ data->mck_characteristics,
+ &at91sam9260_mck_lock,
+ CLK_SET_RATE_GATE, INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres",
+ &at91rm9200_master_layout,
+ data->mck_characteristics,
+ &at91sam9260_mck_lock,
+ CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
@@ -457,7 +471,7 @@ static void __init at91sam926x_pmc_setup(struct device_node *np,
for (i = 0; i < data->num_pck; i++) {
hw = at91_clk_register_peripheral(regmap,
data->pck[i].n,
- "masterck",
+ "masterck_div",
data->pck[i].id);
if (IS_ERR(hw))
goto err_free;
diff --git a/drivers/clk/at91/at91sam9g45.c b/drivers/clk/at91/at91sam9g45.c
index cb4a406ed15d..0214333dedd3 100644
--- a/drivers/clk/at91/at91sam9g45.c
+++ b/drivers/clk/at91/at91sam9g45.c
@@ -7,6 +7,8 @@
#include "pmc.h"
+static DEFINE_SPINLOCK(at91sam9g45_mck_lock);
+
static const struct clk_master_characteristics mck_characteristics = {
.output = { .min = 0, .max = 133333333 },
.divisors = { 1, 2, 4, 3 },
@@ -40,10 +42,10 @@ static const struct {
char *p;
u8 id;
} at91sam9g45_systemck[] = {
- { .n = "ddrck", .p = "masterck", .id = 2 },
- { .n = "uhpck", .p = "usbck", .id = 6 },
- { .n = "pck0", .p = "prog0", .id = 8 },
- { .n = "pck1", .p = "prog1", .id = 9 },
+ { .n = "ddrck", .p = "masterck_div", .id = 2 },
+ { .n = "uhpck", .p = "usbck", .id = 6 },
+ { .n = "pck0", .p = "prog0", .id = 8 },
+ { .n = "pck1", .p = "prog1", .id = 9 },
};
struct pck {
@@ -148,9 +150,21 @@ static void __init at91sam9g45_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
- &at91rm9200_master_layout,
- &mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
+ parent_names,
+ &at91rm9200_master_layout,
+ &mck_characteristics,
+ &at91sam9g45_mck_lock,
+ CLK_SET_RATE_GATE, INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres",
+ &at91rm9200_master_layout,
+ &mck_characteristics,
+ &at91sam9g45_mck_lock,
+ CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
@@ -166,7 +180,7 @@ static void __init at91sam9g45_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- parent_names[4] = "masterck";
+ parent_names[4] = "masterck_div";
for (i = 0; i < 2; i++) {
char name[6];
@@ -195,7 +209,7 @@ static void __init at91sam9g45_pmc_setup(struct device_node *np)
for (i = 0; i < ARRAY_SIZE(at91sam9g45_periphck); i++) {
hw = at91_clk_register_peripheral(regmap,
at91sam9g45_periphck[i].n,
- "masterck",
+ "masterck_div",
at91sam9g45_periphck[i].id);
if (IS_ERR(hw))
goto err_free;
diff --git a/drivers/clk/at91/at91sam9n12.c b/drivers/clk/at91/at91sam9n12.c
index 93f7eb216122..f9db5316a7f1 100644
--- a/drivers/clk/at91/at91sam9n12.c
+++ b/drivers/clk/at91/at91sam9n12.c
@@ -7,6 +7,8 @@
#include "pmc.h"
+static DEFINE_SPINLOCK(at91sam9n12_mck_lock);
+
static const struct clk_master_characteristics mck_characteristics = {
.output = { .min = 0, .max = 133333333 },
.divisors = { 1, 2, 4, 3 },
@@ -54,12 +56,12 @@ static const struct {
char *p;
u8 id;
} at91sam9n12_systemck[] = {
- { .n = "ddrck", .p = "masterck", .id = 2 },
- { .n = "lcdck", .p = "masterck", .id = 3 },
- { .n = "uhpck", .p = "usbck", .id = 6 },
- { .n = "udpck", .p = "usbck", .id = 7 },
- { .n = "pck0", .p = "prog0", .id = 8 },
- { .n = "pck1", .p = "prog1", .id = 9 },
+ { .n = "ddrck", .p = "masterck_div", .id = 2 },
+ { .n = "lcdck", .p = "masterck_div", .id = 3 },
+ { .n = "uhpck", .p = "usbck", .id = 6 },
+ { .n = "udpck", .p = "usbck", .id = 7 },
+ { .n = "pck0", .p = "prog0", .id = 8 },
+ { .n = "pck1", .p = "prog1", .id = 9 },
};
static const struct clk_pcr_layout at91sam9n12_pcr_layout = {
@@ -175,9 +177,21 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "pllbck";
- hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
- &at91sam9x5_master_layout,
- &mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
+ parent_names,
+ &at91sam9x5_master_layout,
+ &mck_characteristics,
+ &at91sam9n12_mck_lock,
+ CLK_SET_RATE_GATE, INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres",
+ &at91sam9x5_master_layout,
+ &mck_characteristics,
+ &at91sam9n12_mck_lock,
+ CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
@@ -191,7 +205,7 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "pllbck";
- parent_names[4] = "masterck";
+ parent_names[4] = "masterck_div";
for (i = 0; i < 2; i++) {
char name[6];
@@ -221,7 +235,7 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&at91sam9n12_pcr_layout,
at91sam9n12_periphck[i].n,
- "masterck",
+ "masterck_div",
at91sam9n12_periphck[i].id,
&range, INT_MIN);
if (IS_ERR(hw))
diff --git a/drivers/clk/at91/at91sam9rl.c b/drivers/clk/at91/at91sam9rl.c
index a343eb69bb35..66736e03cfef 100644
--- a/drivers/clk/at91/at91sam9rl.c
+++ b/drivers/clk/at91/at91sam9rl.c
@@ -7,6 +7,8 @@
#include "pmc.h"
+static DEFINE_SPINLOCK(sam9rl_mck_lock);
+
static const struct clk_master_characteristics sam9rl_mck_characteristics = {
.output = { .min = 0, .max = 94000000 },
.divisors = { 1, 2, 4, 0 },
@@ -117,9 +119,20 @@ static void __init at91sam9rl_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "pllack";
parent_names[3] = "utmick";
- hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
- &at91rm9200_master_layout,
- &sam9rl_mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
+ parent_names,
+ &at91rm9200_master_layout,
+ &sam9rl_mck_characteristics,
+ &sam9rl_mck_lock, CLK_SET_RATE_GATE,
+ INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres",
+ &at91rm9200_master_layout,
+ &sam9rl_mck_characteristics,
+ &sam9rl_mck_lock, CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
@@ -129,7 +142,7 @@ static void __init at91sam9rl_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "pllack";
parent_names[3] = "utmick";
- parent_names[4] = "masterck";
+ parent_names[4] = "masterck_div";
for (i = 0; i < 2; i++) {
char name[6];
@@ -158,7 +171,7 @@ static void __init at91sam9rl_pmc_setup(struct device_node *np)
for (i = 0; i < ARRAY_SIZE(at91sam9rl_periphck); i++) {
hw = at91_clk_register_peripheral(regmap,
at91sam9rl_periphck[i].n,
- "masterck",
+ "masterck_div",
at91sam9rl_periphck[i].id);
if (IS_ERR(hw))
goto err_free;
diff --git a/drivers/clk/at91/at91sam9x5.c b/drivers/clk/at91/at91sam9x5.c
index 22b9aad9efb8..79b9d3667228 100644
--- a/drivers/clk/at91/at91sam9x5.c
+++ b/drivers/clk/at91/at91sam9x5.c
@@ -7,6 +7,8 @@
#include "pmc.h"
+static DEFINE_SPINLOCK(mck_lock);
+
static const struct clk_master_characteristics mck_characteristics = {
.output = { .min = 0, .max = 133333333 },
.divisors = { 1, 2, 4, 3 },
@@ -41,7 +43,7 @@ static const struct {
char *p;
u8 id;
} at91sam9x5_systemck[] = {
- { .n = "ddrck", .p = "masterck", .id = 2 },
+ { .n = "ddrck", .p = "masterck_div", .id = 2 },
{ .n = "smdck", .p = "smdclk", .id = 4 },
{ .n = "uhpck", .p = "usbck", .id = 6 },
{ .n = "udpck", .p = "usbck", .id = 7 },
@@ -196,9 +198,19 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np,
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
- &at91sam9x5_master_layout,
- &mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
+ parent_names,
+ &at91sam9x5_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE, INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres",
+ &at91sam9x5_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
@@ -218,7 +230,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np,
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- parent_names[4] = "masterck";
+ parent_names[4] = "masterck_div";
for (i = 0; i < 2; i++) {
char name[6];
@@ -245,7 +257,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np,
}
if (has_lcdck) {
- hw = at91_clk_register_system(regmap, "lcdck", "masterck", 3);
+ hw = at91_clk_register_system(regmap, "lcdck", "masterck_div", 3);
if (IS_ERR(hw))
goto err_free;
@@ -256,7 +268,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np,
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&at91sam9x5_pcr_layout,
at91sam9x5_periphck[i].n,
- "masterck",
+ "masterck_div",
at91sam9x5_periphck[i].id,
&range, INT_MIN);
if (IS_ERR(hw))
@@ -269,7 +281,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np,
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&at91sam9x5_pcr_layout,
extra_pcks[i].n,
- "masterck",
+ "masterck_div",
extra_pcks[i].id,
&range, INT_MIN);
if (IS_ERR(hw))
diff --git a/drivers/clk/at91/clk-master.c b/drivers/clk/at91/clk-master.c
index bd0d8a69a2cf..a80427980bf7 100644
--- a/drivers/clk/at91/clk-master.c
+++ b/drivers/clk/at91/clk-master.c
@@ -15,7 +15,7 @@
#define MASTER_PRES_MASK 0x7
#define MASTER_PRES_MAX MASTER_PRES_MASK
#define MASTER_DIV_SHIFT 8
-#define MASTER_DIV_MASK 0x3
+#define MASTER_DIV_MASK 0x7
#define PMC_MCR 0x30
#define PMC_MCR_ID_MSK GENMASK(3, 0)
@@ -58,83 +58,309 @@ static inline bool clk_master_ready(struct clk_master *master)
static int clk_master_prepare(struct clk_hw *hw)
{
struct clk_master *master = to_clk_master(hw);
+ unsigned long flags;
+
+ spin_lock_irqsave(master->lock, flags);
while (!clk_master_ready(master))
cpu_relax();
+ spin_unlock_irqrestore(master->lock, flags);
+
return 0;
}
static int clk_master_is_prepared(struct clk_hw *hw)
{
struct clk_master *master = to_clk_master(hw);
+ unsigned long flags;
+ bool status;
- return clk_master_ready(master);
+ spin_lock_irqsave(master->lock, flags);
+ status = clk_master_ready(master);
+ spin_unlock_irqrestore(master->lock, flags);
+
+ return status;
}
-static unsigned long clk_master_recalc_rate(struct clk_hw *hw,
- unsigned long parent_rate)
+static unsigned long clk_master_div_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
{
- u8 pres;
u8 div;
- unsigned long rate = parent_rate;
+ unsigned long flags, rate = parent_rate;
struct clk_master *master = to_clk_master(hw);
const struct clk_master_layout *layout = master->layout;
const struct clk_master_characteristics *characteristics =
master->characteristics;
unsigned int mckr;
+ spin_lock_irqsave(master->lock, flags);
regmap_read(master->regmap, master->layout->offset, &mckr);
+ spin_unlock_irqrestore(master->lock, flags);
+
mckr &= layout->mask;
- pres = (mckr >> layout->pres_shift) & MASTER_PRES_MASK;
div = (mckr >> MASTER_DIV_SHIFT) & MASTER_DIV_MASK;
- if (characteristics->have_div3_pres && pres == MASTER_PRES_MAX)
- rate /= 3;
- else
- rate >>= pres;
-
rate /= characteristics->divisors[div];
if (rate < characteristics->output.min)
- pr_warn("master clk is underclocked");
+ pr_warn("master clk div is underclocked");
else if (rate > characteristics->output.max)
- pr_warn("master clk is overclocked");
+ pr_warn("master clk div is overclocked");
return rate;
}
-static u8 clk_master_get_parent(struct clk_hw *hw)
+static const struct clk_ops master_div_ops = {
+ .prepare = clk_master_prepare,
+ .is_prepared = clk_master_is_prepared,
+ .recalc_rate = clk_master_div_recalc_rate,
+};
+
+static int clk_master_div_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_master *master = to_clk_master(hw);
+ const struct clk_master_characteristics *characteristics =
+ master->characteristics;
+ unsigned long flags;
+ int div, i;
+
+ div = DIV_ROUND_CLOSEST(parent_rate, rate);
+ if (div > ARRAY_SIZE(characteristics->divisors))
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(characteristics->divisors); i++) {
+ if (!characteristics->divisors[i])
+ break;
+
+ if (div == characteristics->divisors[i]) {
+ div = i;
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(characteristics->divisors))
+ return -EINVAL;
+
+ spin_lock_irqsave(master->lock, flags);
+ regmap_update_bits(master->regmap, master->layout->offset,
+ (MASTER_DIV_MASK << MASTER_DIV_SHIFT),
+ (div << MASTER_DIV_SHIFT));
+ while (!clk_master_ready(master))
+ cpu_relax();
+ spin_unlock_irqrestore(master->lock, flags);
+
+ return 0;
+}
+
+static int clk_master_div_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct clk_master *master = to_clk_master(hw);
+ const struct clk_master_characteristics *characteristics =
+ master->characteristics;
+ struct clk_hw *parent;
+ unsigned long parent_rate, tmp_rate, best_rate = 0;
+ int i, best_diff = INT_MIN, tmp_diff;
+
+ parent = clk_hw_get_parent(hw);
+ if (!parent)
+ return -EINVAL;
+
+ parent_rate = clk_hw_get_rate(parent);
+ if (!parent_rate)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(characteristics->divisors); i++) {
+ if (!characteristics->divisors[i])
+ break;
+
+ tmp_rate = DIV_ROUND_CLOSEST_ULL(parent_rate,
+ characteristics->divisors[i]);
+ tmp_diff = abs(tmp_rate - req->rate);
+
+ if (!best_rate || best_diff > tmp_diff) {
+ best_diff = tmp_diff;
+ best_rate = tmp_rate;
+ }
+
+ if (!best_diff)
+ break;
+ }
+
+ req->best_parent_rate = best_rate;
+ req->best_parent_hw = parent;
+ req->rate = best_rate;
+
+ return 0;
+}
+
+static const struct clk_ops master_div_ops_chg = {
+ .prepare = clk_master_prepare,
+ .is_prepared = clk_master_is_prepared,
+ .recalc_rate = clk_master_div_recalc_rate,
+ .determine_rate = clk_master_div_determine_rate,
+ .set_rate = clk_master_div_set_rate,
+};
+
+static void clk_sama7g5_master_best_diff(struct clk_rate_request *req,
+ struct clk_hw *parent,
+ unsigned long parent_rate,
+ long *best_rate,
+ long *best_diff,
+ u32 div)
+{
+ unsigned long tmp_rate, tmp_diff;
+
+ if (div == MASTER_PRES_MAX)
+ tmp_rate = parent_rate / 3;
+ else
+ tmp_rate = parent_rate >> div;
+
+ tmp_diff = abs(req->rate - tmp_rate);
+
+ if (*best_diff < 0 || *best_diff >= tmp_diff) {
+ *best_rate = tmp_rate;
+ *best_diff = tmp_diff;
+ req->best_parent_rate = parent_rate;
+ req->best_parent_hw = parent;
+ }
+}
+
+static int clk_master_pres_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct clk_master *master = to_clk_master(hw);
+ struct clk_rate_request req_parent = *req;
+ const struct clk_master_characteristics *characteristics =
+ master->characteristics;
+ struct clk_hw *parent;
+ long best_rate = LONG_MIN, best_diff = LONG_MIN;
+ u32 pres;
+ int i;
+
+ if (master->chg_pid < 0)
+ return -EOPNOTSUPP;
+
+ parent = clk_hw_get_parent_by_index(hw, master->chg_pid);
+ if (!parent)
+ return -EOPNOTSUPP;
+
+ for (i = 0; i <= MASTER_PRES_MAX; i++) {
+ if (characteristics->have_div3_pres && i == MASTER_PRES_MAX)
+ pres = 3;
+ else
+ pres = 1 << i;
+
+ req_parent.rate = req->rate * pres;
+ if (__clk_determine_rate(parent, &req_parent))
+ continue;
+
+ clk_sama7g5_master_best_diff(req, parent, req_parent.rate,
+ &best_diff, &best_rate, pres);
+ if (!best_diff)
+ break;
+ }
+
+ return 0;
+}
+
+static int clk_master_pres_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_master *master = to_clk_master(hw);
+ unsigned long flags;
+ unsigned int pres;
+
+ pres = DIV_ROUND_CLOSEST(parent_rate, rate);
+ if (pres > MASTER_PRES_MAX)
+ return -EINVAL;
+
+ else if (pres == 3)
+ pres = MASTER_PRES_MAX;
+ else
+ pres = ffs(pres) - 1;
+
+ spin_lock_irqsave(master->lock, flags);
+ regmap_update_bits(master->regmap, master->layout->offset,
+ (MASTER_PRES_MASK << master->layout->pres_shift),
+ (pres << master->layout->pres_shift));
+
+ while (!clk_master_ready(master))
+ cpu_relax();
+ spin_unlock_irqrestore(master->lock, flags);
+
+ return 0;
+}
+
+static unsigned long clk_master_pres_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_master *master = to_clk_master(hw);
+ const struct clk_master_characteristics *characteristics =
+ master->characteristics;
+ unsigned long flags;
+ unsigned int val, pres;
+
+ spin_lock_irqsave(master->lock, flags);
+ regmap_read(master->regmap, master->layout->offset, &val);
+ spin_unlock_irqrestore(master->lock, flags);
+
+ pres = (val >> master->layout->pres_shift) & MASTER_PRES_MASK;
+ if (pres == 3 && characteristics->have_div3_pres)
+ pres = 3;
+ else
+ pres = (1 << pres);
+
+ return DIV_ROUND_CLOSEST_ULL(parent_rate, pres);
+}
+
+static u8 clk_master_pres_get_parent(struct clk_hw *hw)
+{
+ struct clk_master *master = to_clk_master(hw);
+ unsigned long flags;
unsigned int mckr;
+ spin_lock_irqsave(master->lock, flags);
regmap_read(master->regmap, master->layout->offset, &mckr);
+ spin_unlock_irqrestore(master->lock, flags);
return mckr & AT91_PMC_CSS;
}
-static const struct clk_ops master_ops = {
+static const struct clk_ops master_pres_ops = {
.prepare = clk_master_prepare,
.is_prepared = clk_master_is_prepared,
- .recalc_rate = clk_master_recalc_rate,
- .get_parent = clk_master_get_parent,
+ .recalc_rate = clk_master_pres_recalc_rate,
+ .get_parent = clk_master_pres_get_parent,
};
-struct clk_hw * __init
-at91_clk_register_master(struct regmap *regmap,
+static const struct clk_ops master_pres_ops_chg = {
+ .prepare = clk_master_prepare,
+ .is_prepared = clk_master_is_prepared,
+ .determine_rate = clk_master_pres_determine_rate,
+ .recalc_rate = clk_master_pres_recalc_rate,
+ .get_parent = clk_master_pres_get_parent,
+ .set_rate = clk_master_pres_set_rate,
+};
+
+static struct clk_hw * __init
+at91_clk_register_master_internal(struct regmap *regmap,
const char *name, int num_parents,
const char **parent_names,
const struct clk_master_layout *layout,
- const struct clk_master_characteristics *characteristics)
+ const struct clk_master_characteristics *characteristics,
+ const struct clk_ops *ops, spinlock_t *lock, u32 flags,
+ int chg_pid)
{
struct clk_master *master;
struct clk_init_data init;
struct clk_hw *hw;
int ret;
- if (!name || !num_parents || !parent_names)
+ if (!name || !num_parents || !parent_names || !lock)
return ERR_PTR(-EINVAL);
master = kzalloc(sizeof(*master), GFP_KERNEL);
@@ -142,15 +368,17 @@ at91_clk_register_master(struct regmap *regmap,
return ERR_PTR(-ENOMEM);
init.name = name;
- init.ops = &master_ops;
+ init.ops = ops;
init.parent_names = parent_names;
init.num_parents = num_parents;
- init.flags = 0;
+ init.flags = flags;
master->hw.init = &init;
master->layout = layout;
master->characteristics = characteristics;
master->regmap = regmap;
+ master->chg_pid = chg_pid;
+ master->lock = lock;
hw = &master->hw;
ret = clk_hw_register(NULL, &master->hw);
@@ -162,37 +390,54 @@ at91_clk_register_master(struct regmap *regmap,
return hw;
}
-static unsigned long
-clk_sama7g5_master_recalc_rate(struct clk_hw *hw,
- unsigned long parent_rate)
+struct clk_hw * __init
+at91_clk_register_master_pres(struct regmap *regmap,
+ const char *name, int num_parents,
+ const char **parent_names,
+ const struct clk_master_layout *layout,
+ const struct clk_master_characteristics *characteristics,
+ spinlock_t *lock, u32 flags, int chg_pid)
{
- struct clk_master *master = to_clk_master(hw);
+ const struct clk_ops *ops;
- return DIV_ROUND_CLOSEST_ULL(parent_rate, (1 << master->div));
+ if (flags & CLK_SET_RATE_GATE)
+ ops = &master_pres_ops;
+ else
+ ops = &master_pres_ops_chg;
+
+ return at91_clk_register_master_internal(regmap, name, num_parents,
+ parent_names, layout,
+ characteristics, ops,
+ lock, flags, chg_pid);
}
-static void clk_sama7g5_master_best_diff(struct clk_rate_request *req,
- struct clk_hw *parent,
- unsigned long parent_rate,
- long *best_rate,
- long *best_diff,
- u32 div)
+struct clk_hw * __init
+at91_clk_register_master_div(struct regmap *regmap,
+ const char *name, const char *parent_name,
+ const struct clk_master_layout *layout,
+ const struct clk_master_characteristics *characteristics,
+ spinlock_t *lock, u32 flags)
{
- unsigned long tmp_rate, tmp_diff;
+ const struct clk_ops *ops;
- if (div == MASTER_PRES_MAX)
- tmp_rate = parent_rate / 3;
+ if (flags & CLK_SET_RATE_GATE)
+ ops = &master_div_ops;
else
- tmp_rate = parent_rate >> div;
+ ops = &master_div_ops_chg;
- tmp_diff = abs(req->rate - tmp_rate);
+ return at91_clk_register_master_internal(regmap, name, 1,
+ &parent_name, layout,
+ characteristics, ops,
+ lock, flags, -EINVAL);
+}
- if (*best_diff < 0 || *best_diff >= tmp_diff) {
- *best_rate = tmp_rate;
- *best_diff = tmp_diff;
- req->best_parent_rate = parent_rate;
- req->best_parent_hw = parent;
- }
+static unsigned long
+clk_sama7g5_master_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_master *master = to_clk_master(hw);
+
+ return DIV_ROUND_CLOSEST_ULL(parent_rate, (1 << master->div));
}
static int clk_sama7g5_master_determine_rate(struct clk_hw *hw,
diff --git a/drivers/clk/at91/clk-sam9x60-pll.c b/drivers/clk/at91/clk-sam9x60-pll.c
index 78f458a7b2ef..34e3ab13741a 100644
--- a/drivers/clk/at91/clk-sam9x60-pll.c
+++ b/drivers/clk/at91/clk-sam9x60-pll.c
@@ -229,6 +229,57 @@ static int sam9x60_frac_pll_set_rate(struct clk_hw *hw, unsigned long rate,
return sam9x60_frac_pll_compute_mul_frac(core, rate, parent_rate, true);
}
+static int sam9x60_frac_pll_set_rate_chg(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct sam9x60_pll_core *core = to_sam9x60_pll_core(hw);
+ struct sam9x60_frac *frac = to_sam9x60_frac(core);
+ struct regmap *regmap = core->regmap;
+ unsigned long irqflags;
+ unsigned int val, cfrac, cmul;
+ long ret;
+
+ ret = sam9x60_frac_pll_compute_mul_frac(core, rate, parent_rate, true);
+ if (ret <= 0)
+ return ret;
+
+ spin_lock_irqsave(core->lock, irqflags);
+
+ regmap_update_bits(regmap, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ core->id);
+ regmap_read(regmap, AT91_PMC_PLL_CTRL1, &val);
+ cmul = (val & core->layout->mul_mask) >> core->layout->mul_shift;
+ cfrac = (val & core->layout->frac_mask) >> core->layout->frac_shift;
+
+ if (cmul == frac->mul && cfrac == frac->frac)
+ goto unlock;
+
+ regmap_write(regmap, AT91_PMC_PLL_CTRL1,
+ (frac->mul << core->layout->mul_shift) |
+ (frac->frac << core->layout->frac_shift));
+
+ regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
+
+ regmap_update_bits(regmap, AT91_PMC_PLL_CTRL0,
+ AT91_PMC_PLL_CTRL0_ENLOCK | AT91_PMC_PLL_CTRL0_ENPLL,
+ AT91_PMC_PLL_CTRL0_ENLOCK |
+ AT91_PMC_PLL_CTRL0_ENPLL);
+
+ regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
+
+ while (!sam9x60_pll_ready(regmap, core->id))
+ cpu_relax();
+
+unlock:
+ spin_unlock_irqrestore(core->lock, irqflags);
+
+ return ret;
+}
+
static const struct clk_ops sam9x60_frac_pll_ops = {
.prepare = sam9x60_frac_pll_prepare,
.unprepare = sam9x60_frac_pll_unprepare,
@@ -238,6 +289,15 @@ static const struct clk_ops sam9x60_frac_pll_ops = {
.set_rate = sam9x60_frac_pll_set_rate,
};
+static const struct clk_ops sam9x60_frac_pll_ops_chg = {
+ .prepare = sam9x60_frac_pll_prepare,
+ .unprepare = sam9x60_frac_pll_unprepare,
+ .is_prepared = sam9x60_frac_pll_is_prepared,
+ .recalc_rate = sam9x60_frac_pll_recalc_rate,
+ .round_rate = sam9x60_frac_pll_round_rate,
+ .set_rate = sam9x60_frac_pll_set_rate_chg,
+};
+
static int sam9x60_div_pll_prepare(struct clk_hw *hw)
{
struct sam9x60_pll_core *core = to_sam9x60_pll_core(hw);
@@ -384,6 +444,44 @@ static int sam9x60_div_pll_set_rate(struct clk_hw *hw, unsigned long rate,
return 0;
}
+static int sam9x60_div_pll_set_rate_chg(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct sam9x60_pll_core *core = to_sam9x60_pll_core(hw);
+ struct sam9x60_div *div = to_sam9x60_div(core);
+ struct regmap *regmap = core->regmap;
+ unsigned long irqflags;
+ unsigned int val, cdiv;
+
+ div->div = DIV_ROUND_CLOSEST(parent_rate, rate) - 1;
+
+ spin_lock_irqsave(core->lock, irqflags);
+ regmap_update_bits(regmap, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ core->id);
+ regmap_read(regmap, AT91_PMC_PLL_CTRL0, &val);
+ cdiv = (val & core->layout->div_mask) >> core->layout->div_shift;
+
+ /* Stop if nothing changed. */
+ if (cdiv == div->div)
+ goto unlock;
+
+ regmap_update_bits(regmap, AT91_PMC_PLL_CTRL0,
+ core->layout->div_mask,
+ (div->div << core->layout->div_shift));
+
+ regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
+
+ while (!sam9x60_pll_ready(regmap, core->id))
+ cpu_relax();
+
+unlock:
+ spin_unlock_irqrestore(core->lock, irqflags);
+
+ return 0;
+}
+
static const struct clk_ops sam9x60_div_pll_ops = {
.prepare = sam9x60_div_pll_prepare,
.unprepare = sam9x60_div_pll_unprepare,
@@ -393,17 +491,26 @@ static const struct clk_ops sam9x60_div_pll_ops = {
.set_rate = sam9x60_div_pll_set_rate,
};
+static const struct clk_ops sam9x60_div_pll_ops_chg = {
+ .prepare = sam9x60_div_pll_prepare,
+ .unprepare = sam9x60_div_pll_unprepare,
+ .is_prepared = sam9x60_div_pll_is_prepared,
+ .recalc_rate = sam9x60_div_pll_recalc_rate,
+ .round_rate = sam9x60_div_pll_round_rate,
+ .set_rate = sam9x60_div_pll_set_rate_chg,
+};
+
struct clk_hw * __init
sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock,
const char *name, const char *parent_name,
struct clk_hw *parent_hw, u8 id,
const struct clk_pll_characteristics *characteristics,
- const struct clk_pll_layout *layout, bool critical)
+ const struct clk_pll_layout *layout, u32 flags)
{
struct sam9x60_frac *frac;
struct clk_hw *hw;
struct clk_init_data init;
- unsigned long parent_rate, flags;
+ unsigned long parent_rate, irqflags;
unsigned int val;
int ret;
@@ -417,10 +524,12 @@ sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock,
init.name = name;
init.parent_names = &parent_name;
init.num_parents = 1;
- init.ops = &sam9x60_frac_pll_ops;
- init.flags = CLK_SET_RATE_GATE;
- if (critical)
- init.flags |= CLK_IS_CRITICAL;
+ if (flags & CLK_SET_RATE_GATE)
+ init.ops = &sam9x60_frac_pll_ops;
+ else
+ init.ops = &sam9x60_frac_pll_ops_chg;
+
+ init.flags = flags;
frac->core.id = id;
frac->core.hw.init = &init;
@@ -429,7 +538,7 @@ sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock,
frac->core.regmap = regmap;
frac->core.lock = lock;
- spin_lock_irqsave(frac->core.lock, flags);
+ spin_lock_irqsave(frac->core.lock, irqflags);
if (sam9x60_pll_ready(regmap, id)) {
regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
AT91_PMC_PLL_UPDT_ID_MSK, id);
@@ -457,7 +566,7 @@ sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock,
goto free;
}
}
- spin_unlock_irqrestore(frac->core.lock, flags);
+ spin_unlock_irqrestore(frac->core.lock, irqflags);
hw = &frac->core.hw;
ret = clk_hw_register(NULL, hw);
@@ -469,7 +578,7 @@ sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock,
return hw;
free:
- spin_unlock_irqrestore(frac->core.lock, flags);
+ spin_unlock_irqrestore(frac->core.lock, irqflags);
kfree(frac);
return hw;
}
@@ -478,12 +587,12 @@ struct clk_hw * __init
sam9x60_clk_register_div_pll(struct regmap *regmap, spinlock_t *lock,
const char *name, const char *parent_name, u8 id,
const struct clk_pll_characteristics *characteristics,
- const struct clk_pll_layout *layout, bool critical)
+ const struct clk_pll_layout *layout, u32 flags)
{
struct sam9x60_div *div;
struct clk_hw *hw;
struct clk_init_data init;
- unsigned long flags;
+ unsigned long irqflags;
unsigned int val;
int ret;
@@ -497,11 +606,11 @@ sam9x60_clk_register_div_pll(struct regmap *regmap, spinlock_t *lock,
init.name = name;
init.parent_names = &parent_name;
init.num_parents = 1;
- init.ops = &sam9x60_div_pll_ops;
- init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
- CLK_SET_RATE_PARENT;
- if (critical)
- init.flags |= CLK_IS_CRITICAL;
+ if (flags & CLK_SET_RATE_GATE)
+ init.ops = &sam9x60_div_pll_ops;
+ else
+ init.ops = &sam9x60_div_pll_ops_chg;
+ init.flags = flags;
div->core.id = id;
div->core.hw.init = &init;
@@ -510,14 +619,14 @@ sam9x60_clk_register_div_pll(struct regmap *regmap, spinlock_t *lock,
div->core.regmap = regmap;
div->core.lock = lock;
- spin_lock_irqsave(div->core.lock, flags);
+ spin_lock_irqsave(div->core.lock, irqflags);
regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
AT91_PMC_PLL_UPDT_ID_MSK, id);
regmap_read(regmap, AT91_PMC_PLL_CTRL0, &val);
div->div = FIELD_GET(PMC_PLL_CTRL0_DIV_MSK, val);
- spin_unlock_irqrestore(div->core.lock, flags);
+ spin_unlock_irqrestore(div->core.lock, irqflags);
hw = &div->core.hw;
ret = clk_hw_register(NULL, hw);
diff --git a/drivers/clk/at91/dt-compat.c b/drivers/clk/at91/dt-compat.c
index a50084de97d4..a97b99c2dc12 100644
--- a/drivers/clk/at91/dt-compat.c
+++ b/drivers/clk/at91/dt-compat.c
@@ -24,6 +24,8 @@
#define GCK_INDEX_DT_AUDIO_PLL 5
+static DEFINE_SPINLOCK(mck_lock);
+
#ifdef CONFIG_HAVE_AT91_AUDIO_PLL
static void __init of_sama5d2_clk_audio_pll_frac_setup(struct device_node *np)
{
@@ -388,9 +390,16 @@ of_at91_clk_master_setup(struct device_node *np,
if (IS_ERR(regmap))
return;
- hw = at91_clk_register_master(regmap, name, num_parents,
- parent_names, layout,
- characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", num_parents,
+ parent_names, layout,
+ characteristics, &mck_lock,
+ CLK_SET_RATE_GATE, INT_MIN);
+ if (IS_ERR(hw))
+ goto out_free_characteristics;
+
+ hw = at91_clk_register_master_div(regmap, name, "masterck_pres",
+ layout, characteristics,
+ &mck_lock, CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto out_free_characteristics;
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 7b86affc6d7c..a49076c804a9 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -48,7 +48,7 @@ extern const struct clk_master_layout at91sam9x5_master_layout;
struct clk_master_characteristics {
struct clk_range output;
- u32 divisors[4];
+ u32 divisors[5];
u8 have_div3_pres;
};
@@ -155,10 +155,18 @@ at91_clk_register_sam9x5_main(struct regmap *regmap, const char *name,
const char **parent_names, int num_parents);
struct clk_hw * __init
-at91_clk_register_master(struct regmap *regmap, const char *name,
- int num_parents, const char **parent_names,
- const struct clk_master_layout *layout,
- const struct clk_master_characteristics *characteristics);
+at91_clk_register_master_pres(struct regmap *regmap, const char *name,
+ int num_parents, const char **parent_names,
+ const struct clk_master_layout *layout,
+ const struct clk_master_characteristics *characteristics,
+ spinlock_t *lock, u32 flags, int chg_pid);
+
+struct clk_hw * __init
+at91_clk_register_master_div(struct regmap *regmap, const char *name,
+ const char *parent_names,
+ const struct clk_master_layout *layout,
+ const struct clk_master_characteristics *characteristics,
+ spinlock_t *lock, u32 flags);
struct clk_hw * __init
at91_clk_sama7g5_register_master(struct regmap *regmap,
@@ -190,14 +198,14 @@ struct clk_hw * __init
sam9x60_clk_register_div_pll(struct regmap *regmap, spinlock_t *lock,
const char *name, const char *parent_name, u8 id,
const struct clk_pll_characteristics *characteristics,
- const struct clk_pll_layout *layout, bool critical);
+ const struct clk_pll_layout *layout, u32 flags);
struct clk_hw * __init
sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock,
const char *name, const char *parent_name,
struct clk_hw *parent_hw, u8 id,
const struct clk_pll_characteristics *characteristics,
- const struct clk_pll_layout *layout, bool critical);
+ const struct clk_pll_layout *layout, u32 flags);
struct clk_hw * __init
at91_clk_register_programmable(struct regmap *regmap, const char *name,
diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index 3c4c95603595..5f6fa89571b7 100644
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -8,6 +8,7 @@
#include "pmc.h"
static DEFINE_SPINLOCK(pmc_pll_lock);
+static DEFINE_SPINLOCK(mck_lock);
static const struct clk_master_characteristics mck_characteristics = {
.output = { .min = 140000000, .max = 200000000 },
@@ -76,11 +77,11 @@ static const struct {
char *p;
u8 id;
} sam9x60_systemck[] = {
- { .n = "ddrck", .p = "masterck", .id = 2 },
+ { .n = "ddrck", .p = "masterck_div", .id = 2 },
{ .n = "uhpck", .p = "usbck", .id = 6 },
{ .n = "pck0", .p = "prog0", .id = 8 },
{ .n = "pck1", .p = "prog1", .id = 9 },
- { .n = "qspick", .p = "masterck", .id = 19 },
+ { .n = "qspick", .p = "masterck_div", .id = 19 },
};
static const struct {
@@ -174,7 +175,6 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
struct regmap *regmap;
struct clk_hw *hw;
int i;
- bool bypass;
i = of_property_match_string(np, "clock-names", "td_slck");
if (i < 0)
@@ -209,10 +209,7 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
if (IS_ERR(hw))
goto err_free;
- bypass = of_property_read_bool(np, "atmel,osc-bypass");
-
- hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
- bypass);
+ hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name, 0);
if (IS_ERR(hw))
goto err_free;
main_osc_hw = hw;
@@ -228,13 +225,24 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
hw = sam9x60_clk_register_frac_pll(regmap, &pmc_pll_lock, "pllack_fracck",
"mainck", sam9x60_pmc->chws[PMC_MAIN],
0, &plla_characteristics,
- &pll_frac_layout, true);
+ &pll_frac_layout,
+ /*
+ * This feeds pllack_divck which
+ * feeds CPU. It should not be
+ * disabled.
+ */
+ CLK_IS_CRITICAL | CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
hw = sam9x60_clk_register_div_pll(regmap, &pmc_pll_lock, "pllack_divck",
"pllack_fracck", 0, &plla_characteristics,
- &pll_div_layout, true);
+ &pll_div_layout,
+ /*
+ * This feeds CPU. It should not
+ * be disabled.
+ */
+ CLK_IS_CRITICAL | CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
@@ -243,13 +251,16 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
hw = sam9x60_clk_register_frac_pll(regmap, &pmc_pll_lock, "upllck_fracck",
"main_osc", main_osc_hw, 1,
&upll_characteristics,
- &pll_frac_layout, false);
+ &pll_frac_layout, CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
hw = sam9x60_clk_register_div_pll(regmap, &pmc_pll_lock, "upllck_divck",
"upllck_fracck", 1, &upll_characteristics,
- &pll_div_layout, false);
+ &pll_div_layout,
+ CLK_SET_RATE_GATE |
+ CLK_SET_PARENT_GATE |
+ CLK_SET_RATE_PARENT);
if (IS_ERR(hw))
goto err_free;
@@ -258,9 +269,17 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
parent_names[0] = md_slck_name;
parent_names[1] = "mainck";
parent_names[2] = "pllack_divck";
- hw = at91_clk_register_master(regmap, "masterck", 3, parent_names,
- &sam9x60_master_layout,
- &mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 3,
+ parent_names, &sam9x60_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE, INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres", &sam9x60_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
@@ -276,7 +295,7 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
parent_names[0] = md_slck_name;
parent_names[1] = td_slck_name;
parent_names[2] = "mainck";
- parent_names[3] = "masterck";
+ parent_names[3] = "masterck_div";
parent_names[4] = "pllack_divck";
parent_names[5] = "upllck_divck";
for (i = 0; i < 2; i++) {
@@ -308,7 +327,7 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sam9x60_pcr_layout,
sam9x60_periphck[i].n,
- "masterck",
+ "masterck_div",
sam9x60_periphck[i].id,
&range, INT_MIN);
if (IS_ERR(hw))
diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c
index 8b220762941a..9a5cbc7cd55a 100644
--- a/drivers/clk/at91/sama5d2.c
+++ b/drivers/clk/at91/sama5d2.c
@@ -7,6 +7,8 @@
#include "pmc.h"
+static DEFINE_SPINLOCK(mck_lock);
+
static const struct clk_master_characteristics mck_characteristics = {
.output = { .min = 124000000, .max = 166000000 },
.divisors = { 1, 2, 4, 3 },
@@ -40,14 +42,14 @@ static const struct {
char *p;
u8 id;
} sama5d2_systemck[] = {
- { .n = "ddrck", .p = "masterck", .id = 2 },
- { .n = "lcdck", .p = "masterck", .id = 3 },
- { .n = "uhpck", .p = "usbck", .id = 6 },
- { .n = "udpck", .p = "usbck", .id = 7 },
- { .n = "pck0", .p = "prog0", .id = 8 },
- { .n = "pck1", .p = "prog1", .id = 9 },
- { .n = "pck2", .p = "prog2", .id = 10 },
- { .n = "iscck", .p = "masterck", .id = 18 },
+ { .n = "ddrck", .p = "masterck_div", .id = 2 },
+ { .n = "lcdck", .p = "masterck_div", .id = 3 },
+ { .n = "uhpck", .p = "usbck", .id = 6 },
+ { .n = "udpck", .p = "usbck", .id = 7 },
+ { .n = "pck0", .p = "prog0", .id = 8 },
+ { .n = "pck1", .p = "prog1", .id = 9 },
+ { .n = "pck2", .p = "prog2", .id = 10 },
+ { .n = "iscck", .p = "masterck_div", .id = 18 },
};
static const struct {
@@ -235,15 +237,25 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
- &at91sam9x5_master_layout,
- &mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
+ parent_names,
+ &at91sam9x5_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE, INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres",
+ &at91sam9x5_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
sama5d2_pmc->chws[PMC_MCK] = hw;
- hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck");
+ hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck_div");
if (IS_ERR(hw))
goto err_free;
@@ -259,7 +271,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- parent_names[4] = "masterck";
+ parent_names[4] = "masterck_div";
parent_names[5] = "audiopll_pmcck";
for (i = 0; i < 3; i++) {
char name[6];
@@ -290,7 +302,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama5d2_pcr_layout,
sama5d2_periphck[i].n,
- "masterck",
+ "masterck_div",
sama5d2_periphck[i].id,
&range, INT_MIN);
if (IS_ERR(hw))
@@ -317,7 +329,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- parent_names[4] = "masterck";
+ parent_names[4] = "masterck_div";
parent_names[5] = "audiopll_pmcck";
for (i = 0; i < ARRAY_SIZE(sama5d2_gck); i++) {
hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
diff --git a/drivers/clk/at91/sama5d3.c b/drivers/clk/at91/sama5d3.c
index 7c6e0a5b9dc8..87009ee8effc 100644
--- a/drivers/clk/at91/sama5d3.c
+++ b/drivers/clk/at91/sama5d3.c
@@ -7,6 +7,8 @@
#include "pmc.h"
+static DEFINE_SPINLOCK(mck_lock);
+
static const struct clk_master_characteristics mck_characteristics = {
.output = { .min = 0, .max = 166000000 },
.divisors = { 1, 2, 4, 3 },
@@ -40,14 +42,14 @@ static const struct {
char *p;
u8 id;
} sama5d3_systemck[] = {
- { .n = "ddrck", .p = "masterck", .id = 2 },
- { .n = "lcdck", .p = "masterck", .id = 3 },
- { .n = "smdck", .p = "smdclk", .id = 4 },
- { .n = "uhpck", .p = "usbck", .id = 6 },
- { .n = "udpck", .p = "usbck", .id = 7 },
- { .n = "pck0", .p = "prog0", .id = 8 },
- { .n = "pck1", .p = "prog1", .id = 9 },
- { .n = "pck2", .p = "prog2", .id = 10 },
+ { .n = "ddrck", .p = "masterck_div", .id = 2 },
+ { .n = "lcdck", .p = "masterck_div", .id = 3 },
+ { .n = "smdck", .p = "smdclk", .id = 4 },
+ { .n = "uhpck", .p = "usbck", .id = 6 },
+ { .n = "udpck", .p = "usbck", .id = 7 },
+ { .n = "pck0", .p = "prog0", .id = 8 },
+ { .n = "pck1", .p = "prog1", .id = 9 },
+ { .n = "pck2", .p = "prog2", .id = 10 },
};
static const struct {
@@ -170,9 +172,19 @@ static void __init sama5d3_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
- &at91sam9x5_master_layout,
- &mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
+ parent_names,
+ &at91sam9x5_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE, INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres",
+ &at91sam9x5_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
@@ -192,7 +204,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- parent_names[4] = "masterck";
+ parent_names[4] = "masterck_div";
for (i = 0; i < 3; i++) {
char name[6];
@@ -222,7 +234,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama5d3_pcr_layout,
sama5d3_periphck[i].n,
- "masterck",
+ "masterck_div",
sama5d3_periphck[i].id,
&sama5d3_periphck[i].r,
INT_MIN);
diff --git a/drivers/clk/at91/sama5d4.c b/drivers/clk/at91/sama5d4.c
index 92d8d4141b43..57fff790188b 100644
--- a/drivers/clk/at91/sama5d4.c
+++ b/drivers/clk/at91/sama5d4.c
@@ -7,6 +7,8 @@
#include "pmc.h"
+static DEFINE_SPINLOCK(mck_lock);
+
static const struct clk_master_characteristics mck_characteristics = {
.output = { .min = 125000000, .max = 200000000 },
.divisors = { 1, 2, 4, 3 },
@@ -39,14 +41,14 @@ static const struct {
char *p;
u8 id;
} sama5d4_systemck[] = {
- { .n = "ddrck", .p = "masterck", .id = 2 },
- { .n = "lcdck", .p = "masterck", .id = 3 },
- { .n = "smdck", .p = "smdclk", .id = 4 },
- { .n = "uhpck", .p = "usbck", .id = 6 },
- { .n = "udpck", .p = "usbck", .id = 7 },
- { .n = "pck0", .p = "prog0", .id = 8 },
- { .n = "pck1", .p = "prog1", .id = 9 },
- { .n = "pck2", .p = "prog2", .id = 10 },
+ { .n = "ddrck", .p = "masterck_div", .id = 2 },
+ { .n = "lcdck", .p = "masterck_div", .id = 3 },
+ { .n = "smdck", .p = "smdclk", .id = 4 },
+ { .n = "uhpck", .p = "usbck", .id = 6 },
+ { .n = "udpck", .p = "usbck", .id = 7 },
+ { .n = "pck0", .p = "prog0", .id = 8 },
+ { .n = "pck1", .p = "prog1", .id = 9 },
+ { .n = "pck2", .p = "prog2", .id = 10 },
};
static const struct {
@@ -185,15 +187,25 @@ static void __init sama5d4_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
- &at91sam9x5_master_layout,
- &mck_characteristics);
+ hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
+ parent_names,
+ &at91sam9x5_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE, INT_MIN);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ hw = at91_clk_register_master_div(regmap, "masterck_div",
+ "masterck_pres",
+ &at91sam9x5_master_layout,
+ &mck_characteristics, &mck_lock,
+ CLK_SET_RATE_GATE);
if (IS_ERR(hw))
goto err_free;
sama5d4_pmc->chws[PMC_MCK] = hw;
- hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck");
+ hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck_div");
if (IS_ERR(hw))
goto err_free;
@@ -215,7 +227,7 @@ static void __init sama5d4_pmc_setup(struct device_node *np)
parent_names[1] = "mainck";
parent_names[2] = "plladivck";
parent_names[3] = "utmick";
- parent_names[4] = "masterck";
+ parent_names[4] = "masterck_div";
for (i = 0; i < 3; i++) {
char name[6];
@@ -245,7 +257,7 @@ static void __init sama5d4_pmc_setup(struct device_node *np)
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama5d4_pcr_layout,
sama5d4_periphck[i].n,
- "masterck",
+ "masterck_div",
sama5d4_periphck[i].id,
&range, INT_MIN);
if (IS_ERR(hw))
diff --git a/drivers/clk/at91/sama7g5.c b/drivers/clk/at91/sama7g5.c
index 0db2ab3eca14..a6e20b35960e 100644
--- a/drivers/clk/at91/sama7g5.c
+++ b/drivers/clk/at91/sama7g5.c
@@ -32,6 +32,7 @@
} while (0)
static DEFINE_SPINLOCK(pmc_pll_lock);
+static DEFINE_SPINLOCK(pmc_mck0_lock);
static DEFINE_SPINLOCK(pmc_mckX_lock);
/**
@@ -89,118 +90,198 @@ static const struct clk_pll_layout pll_layout_divio = {
.endiv_shift = 30,
};
+/*
+ * CPU PLL output range.
+ * Notice: The upper limit has been setup to 1000000002 due to hardware
+ * block which cannot output exactly 1GHz.
+ */
+static const struct clk_range cpu_pll_outputs[] = {
+ { .min = 2343750, .max = 1000000002 },
+};
+
+/* PLL output range. */
+static const struct clk_range pll_outputs[] = {
+ { .min = 2343750, .max = 1200000000 },
+};
+
+/* CPU PLL characteristics. */
+static const struct clk_pll_characteristics cpu_pll_characteristics = {
+ .input = { .min = 12000000, .max = 50000000 },
+ .num_output = ARRAY_SIZE(cpu_pll_outputs),
+ .output = cpu_pll_outputs,
+};
+
+/* PLL characteristics. */
+static const struct clk_pll_characteristics pll_characteristics = {
+ .input = { .min = 12000000, .max = 50000000 },
+ .num_output = ARRAY_SIZE(pll_outputs),
+ .output = pll_outputs,
+};
+
/**
* PLL clocks description
* @n: clock name
* @p: clock parent
* @l: clock layout
+ * @c: clock characteristics
* @t: clock type
- * @f: true if clock is critical and cannot be disabled
+ * @f: clock flags
* @eid: export index in sama7g5->chws[] array
*/
static const struct {
const char *n;
const char *p;
const struct clk_pll_layout *l;
+ const struct clk_pll_characteristics *c;
+ unsigned long f;
u8 t;
- u8 c;
u8 eid;
} sama7g5_plls[][PLL_ID_MAX] = {
[PLL_ID_CPU] = {
{ .n = "cpupll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
+ .c = &cpu_pll_characteristics,
.t = PLL_TYPE_FRAC,
- .c = 1, },
+ /*
+ * This feeds cpupll_divpmcck which feeds CPU. It should
+ * not be disabled.
+ */
+ .f = CLK_IS_CRITICAL, },
{ .n = "cpupll_divpmcck",
.p = "cpupll_fracck",
.l = &pll_layout_divpmc,
+ .c = &cpu_pll_characteristics,
.t = PLL_TYPE_DIV,
- .c = 1, },
+ /* This feeds CPU. It should not be disabled. */
+ .f = CLK_IS_CRITICAL | CLK_SET_RATE_PARENT,
+ .eid = PMC_CPUPLL, },
},
[PLL_ID_SYS] = {
{ .n = "syspll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
+ .c = &pll_characteristics,
.t = PLL_TYPE_FRAC,
- .c = 1, },
+ /*
+ * This feeds syspll_divpmcck which may feed critial parts
+ * of the systems like timers. Therefore it should not be
+ * disabled.
+ */
+ .f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE, },
{ .n = "syspll_divpmcck",
.p = "syspll_fracck",
.l = &pll_layout_divpmc,
+ .c = &pll_characteristics,
.t = PLL_TYPE_DIV,
- .c = 1, },
+ /*
+ * This may feed critial parts of the systems like timers.
+ * Therefore it should not be disabled.
+ */
+ .f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE,
+ .eid = PMC_SYSPLL, },
},
[PLL_ID_DDR] = {
{ .n = "ddrpll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
+ .c = &pll_characteristics,
.t = PLL_TYPE_FRAC,
- .c = 1, },
+ /*
+ * This feeds ddrpll_divpmcck which feeds DDR. It should not
+ * be disabled.
+ */
+ .f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE, },
{ .n = "ddrpll_divpmcck",
.p = "ddrpll_fracck",
.l = &pll_layout_divpmc,
+ .c = &pll_characteristics,
.t = PLL_TYPE_DIV,
- .c = 1, },
+ /* This feeds DDR. It should not be disabled. */
+ .f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE, },
},
[PLL_ID_IMG] = {
{ .n = "imgpll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
- .t = PLL_TYPE_FRAC, },
+ .c = &pll_characteristics,
+ .t = PLL_TYPE_FRAC,
+ .f = CLK_SET_RATE_GATE, },
{ .n = "imgpll_divpmcck",
.p = "imgpll_fracck",
.l = &pll_layout_divpmc,
- .t = PLL_TYPE_DIV, },
+ .c = &pll_characteristics,
+ .t = PLL_TYPE_DIV,
+ .f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
+ CLK_SET_RATE_PARENT, },
},
[PLL_ID_BAUD] = {
{ .n = "baudpll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
- .t = PLL_TYPE_FRAC, },
+ .c = &pll_characteristics,
+ .t = PLL_TYPE_FRAC,
+ .f = CLK_SET_RATE_GATE, },
{ .n = "baudpll_divpmcck",
.p = "baudpll_fracck",
.l = &pll_layout_divpmc,
- .t = PLL_TYPE_DIV, },
+ .c = &pll_characteristics,
+ .t = PLL_TYPE_DIV,
+ .f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
+ CLK_SET_RATE_PARENT, },
},
[PLL_ID_AUDIO] = {
{ .n = "audiopll_fracck",
.p = "main_xtal",
.l = &pll_layout_frac,
- .t = PLL_TYPE_FRAC, },
+ .c = &pll_characteristics,
+ .t = PLL_TYPE_FRAC,
+ .f = CLK_SET_RATE_GATE, },
{ .n = "audiopll_divpmcck",
.p = "audiopll_fracck",
.l = &pll_layout_divpmc,
+ .c = &pll_characteristics,
.t = PLL_TYPE_DIV,
- .eid = PMC_I2S0_MUX, },
+ .f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
+ CLK_SET_RATE_PARENT,
+ .eid = PMC_AUDIOPMCPLL, },
{ .n = "audiopll_diviock",
.p = "audiopll_fracck",
.l = &pll_layout_divio,
+ .c = &pll_characteristics,
.t = PLL_TYPE_DIV,
- .eid = PMC_I2S1_MUX, },
+ .f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
+ CLK_SET_RATE_PARENT,
+ .eid = PMC_AUDIOIOPLL, },
},
[PLL_ID_ETH] = {
{ .n = "ethpll_fracck",
.p = "main_xtal",
.l = &pll_layout_frac,
- .t = PLL_TYPE_FRAC, },
+ .c = &pll_characteristics,
+ .t = PLL_TYPE_FRAC,
+ .f = CLK_SET_RATE_GATE, },
{ .n = "ethpll_divpmcck",
.p = "ethpll_fracck",
.l = &pll_layout_divpmc,
- .t = PLL_TYPE_DIV, },
+ .c = &pll_characteristics,
+ .t = PLL_TYPE_DIV,
+ .f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
+ CLK_SET_RATE_PARENT, },
},
};
@@ -245,7 +326,7 @@ static const struct {
.ep = { "syspll_divpmcck", "ddrpll_divpmcck", "imgpll_divpmcck", },
.ep_mux_table = { 5, 6, 7, },
.ep_count = 3,
- .ep_chg_id = 6, },
+ .ep_chg_id = 5, },
{ .n = "mck4",
.id = 4,
@@ -278,7 +359,7 @@ static const struct {
};
/* Mux table for programmable clocks. */
-static u32 sama7g5_prog_mux_table[] = { 0, 1, 2, 3, 5, 6, 7, 8, 9, 10, };
+static u32 sama7g5_prog_mux_table[] = { 0, 1, 2, 5, 6, 7, 8, 9, 10, };
/**
* Peripheral clock description
@@ -401,7 +482,7 @@ static const struct {
.pp = { "audiopll_divpmcck", },
.pp_mux_table = { 9, },
.pp_count = 1,
- .pp_chg_id = 4, },
+ .pp_chg_id = 3, },
{ .n = "csi_gclk",
.id = 33,
@@ -513,7 +594,7 @@ static const struct {
.pp = { "ethpll_divpmcck", },
.pp_mux_table = { 10, },
.pp_count = 1,
- .pp_chg_id = 4, },
+ .pp_chg_id = 3, },
{ .n = "gmac1_gclk",
.id = 52,
@@ -545,7 +626,7 @@ static const struct {
.pp = { "syspll_divpmcck", "audiopll_divpmcck", },
.pp_mux_table = { 5, 9, },
.pp_count = 2,
- .pp_chg_id = 5, },
+ .pp_chg_id = 4, },
{ .n = "i2smcc1_gclk",
.id = 58,
@@ -553,7 +634,7 @@ static const struct {
.pp = { "syspll_divpmcck", "audiopll_divpmcck", },
.pp_mux_table = { 5, 9, },
.pp_count = 2,
- .pp_chg_id = 5, },
+ .pp_chg_id = 4, },
{ .n = "mcan0_gclk",
.id = 61,
@@ -695,7 +776,7 @@ static const struct {
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
- .pp_chg_id = 5, },
+ .pp_chg_id = 4, },
{ .n = "sdmmc1_gclk",
.id = 81,
@@ -703,7 +784,7 @@ static const struct {
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
- .pp_chg_id = 5, },
+ .pp_chg_id = 4, },
{ .n = "sdmmc2_gclk",
.id = 82,
@@ -711,7 +792,7 @@ static const struct {
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
- .pp_chg_id = 5, },
+ .pp_chg_id = 4, },
{ .n = "spdifrx_gclk",
.id = 84,
@@ -719,7 +800,7 @@ static const struct {
.pp = { "syspll_divpmcck", "audiopll_divpmcck", },
.pp_mux_table = { 5, 9, },
.pp_count = 2,
- .pp_chg_id = 5, },
+ .pp_chg_id = 4, },
{ .n = "spdiftx_gclk",
.id = 85,
@@ -727,7 +808,7 @@ static const struct {
.pp = { "syspll_divpmcck", "audiopll_divpmcck", },
.pp_mux_table = { 5, 9, },
.pp_count = 2,
- .pp_chg_id = 5, },
+ .pp_chg_id = 4, },
{ .n = "tcb0_ch0_gclk",
.id = 88,
@@ -758,28 +839,16 @@ static const struct {
.pp_chg_id = INT_MIN, },
};
-/* PLL output range. */
-static const struct clk_range pll_outputs[] = {
- { .min = 2343750, .max = 1200000000 },
-};
-
-/* PLL characteristics. */
-static const struct clk_pll_characteristics pll_characteristics = {
- .input = { .min = 12000000, .max = 50000000 },
- .num_output = ARRAY_SIZE(pll_outputs),
- .output = pll_outputs,
-};
-
/* MCK0 characteristics. */
static const struct clk_master_characteristics mck0_characteristics = {
- .output = { .min = 140000000, .max = 200000000 },
- .divisors = { 1, 2, 4, 3 },
+ .output = { .min = 50000000, .max = 200000000 },
+ .divisors = { 1, 2, 4, 3, 5 },
.have_div3_pres = 1,
};
/* MCK0 layout. */
static const struct clk_master_layout mck0_layout = {
- .mask = 0x373,
+ .mask = 0x773,
.pres_shift = 4,
.offset = 0x28,
};
@@ -835,10 +904,10 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
if (IS_ERR(regmap))
return;
- sama7g5_pmc = pmc_data_allocate(PMC_I2S1_MUX + 1,
+ sama7g5_pmc = pmc_data_allocate(PMC_CPU + 1,
nck(sama7g5_systemck),
nck(sama7g5_periphck),
- nck(sama7g5_gck));
+ nck(sama7g5_gck), 8);
if (!sama7g5_pmc)
return;
@@ -886,18 +955,18 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
hw = sam9x60_clk_register_frac_pll(regmap,
&pmc_pll_lock, sama7g5_plls[i][j].n,
sama7g5_plls[i][j].p, parent_hw, i,
- &pll_characteristics,
+ sama7g5_plls[i][j].c,
sama7g5_plls[i][j].l,
- sama7g5_plls[i][j].c);
+ sama7g5_plls[i][j].f);
break;
case PLL_TYPE_DIV:
hw = sam9x60_clk_register_div_pll(regmap,
&pmc_pll_lock, sama7g5_plls[i][j].n,
sama7g5_plls[i][j].p, i,
- &pll_characteristics,
+ sama7g5_plls[i][j].c,
sama7g5_plls[i][j].l,
- sama7g5_plls[i][j].c);
+ sama7g5_plls[i][j].f);
break;
default:
@@ -912,12 +981,19 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
}
}
- parent_names[0] = md_slck_name;
- parent_names[1] = "mainck";
- parent_names[2] = "cpupll_divpmcck";
- parent_names[3] = "syspll_divpmcck";
- hw = at91_clk_register_master(regmap, "mck0", 4, parent_names,
- &mck0_layout, &mck0_characteristics);
+ parent_names[0] = "cpupll_divpmcck";
+ hw = at91_clk_register_master_pres(regmap, "cpuck", 1, parent_names,
+ &mck0_layout, &mck0_characteristics,
+ &pmc_mck0_lock,
+ CLK_SET_RATE_PARENT, 0);
+ if (IS_ERR(hw))
+ goto err_free;
+
+ sama7g5_pmc->chws[PMC_CPU] = hw;
+
+ hw = at91_clk_register_master_div(regmap, "mck0", "cpuck",
+ &mck0_layout, &mck0_characteristics,
+ &pmc_mck0_lock, 0);
if (IS_ERR(hw))
goto err_free;
@@ -926,9 +1002,8 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
parent_names[0] = md_slck_name;
parent_names[1] = td_slck_name;
parent_names[2] = "mainck";
- parent_names[3] = "mck0";
for (i = 0; i < ARRAY_SIZE(sama7g5_mckx); i++) {
- u8 num_parents = 4 + sama7g5_mckx[i].ep_count;
+ u8 num_parents = 3 + sama7g5_mckx[i].ep_count;
u32 *mux_table;
mux_table = kmalloc_array(num_parents, sizeof(*mux_table),
@@ -936,10 +1011,10 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
if (!mux_table)
goto err_free;
- SAMA7G5_INIT_TABLE(mux_table, 4);
- SAMA7G5_FILL_TABLE(&mux_table[4], sama7g5_mckx[i].ep_mux_table,
+ SAMA7G5_INIT_TABLE(mux_table, 3);
+ SAMA7G5_FILL_TABLE(&mux_table[3], sama7g5_mckx[i].ep_mux_table,
sama7g5_mckx[i].ep_count);
- SAMA7G5_FILL_TABLE(&parent_names[4], sama7g5_mckx[i].ep,
+ SAMA7G5_FILL_TABLE(&parent_names[3], sama7g5_mckx[i].ep,
sama7g5_mckx[i].ep_count);
hw = at91_clk_sama7g5_register_master(regmap, sama7g5_mckx[i].n,
@@ -962,24 +1037,25 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
parent_names[0] = md_slck_name;
parent_names[1] = td_slck_name;
parent_names[2] = "mainck";
- parent_names[3] = "mck0";
- parent_names[4] = "syspll_divpmcck";
- parent_names[5] = "ddrpll_divpmcck";
- parent_names[6] = "imgpll_divpmcck";
- parent_names[7] = "baudpll_divpmcck";
- parent_names[8] = "audiopll_divpmcck";
- parent_names[9] = "ethpll_divpmcck";
+ parent_names[3] = "syspll_divpmcck";
+ parent_names[4] = "ddrpll_divpmcck";
+ parent_names[5] = "imgpll_divpmcck";
+ parent_names[6] = "baudpll_divpmcck";
+ parent_names[7] = "audiopll_divpmcck";
+ parent_names[8] = "ethpll_divpmcck";
for (i = 0; i < 8; i++) {
char name[6];
snprintf(name, sizeof(name), "prog%d", i);
hw = at91_clk_register_programmable(regmap, name, parent_names,
- 10, i,
+ 9, i,
&programmable_layout,
sama7g5_prog_mux_table);
if (IS_ERR(hw))
goto err_free;
+
+ sama7g5_pmc->pchws[i] = hw;
}
for (i = 0; i < ARRAY_SIZE(sama7g5_systemck); i++) {
@@ -1010,9 +1086,8 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
parent_names[0] = md_slck_name;
parent_names[1] = td_slck_name;
parent_names[2] = "mainck";
- parent_names[3] = "mck0";
for (i = 0; i < ARRAY_SIZE(sama7g5_gck); i++) {
- u8 num_parents = 4 + sama7g5_gck[i].pp_count;
+ u8 num_parents = 3 + sama7g5_gck[i].pp_count;
u32 *mux_table;
mux_table = kmalloc_array(num_parents, sizeof(*mux_table),
@@ -1020,10 +1095,10 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
if (!mux_table)
goto err_free;
- SAMA7G5_INIT_TABLE(mux_table, 4);
- SAMA7G5_FILL_TABLE(&mux_table[4], sama7g5_gck[i].pp_mux_table,
+ SAMA7G5_INIT_TABLE(mux_table, 3);
+ SAMA7G5_FILL_TABLE(&mux_table[3], sama7g5_gck[i].pp_mux_table,
sama7g5_gck[i].pp_count);
- SAMA7G5_FILL_TABLE(&parent_names[4], sama7g5_gck[i].pp,
+ SAMA7G5_FILL_TABLE(&parent_names[3], sama7g5_gck[i].pp,
sama7g5_gck[i].pp_count);
hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
@@ -1052,7 +1127,7 @@ err_free:
kfree(alloc_mem);
}
- pmc_data_free(sama7g5_pmc);
+ kfree(sama7g5_pmc);
}
/* Some clks are used for a clocksource */
diff --git a/drivers/clk/clk-axi-clkgen.c b/drivers/clk/clk-axi-clkgen.c
index 14d803e6af62..ad86e031ba3e 100644
--- a/drivers/clk/clk-axi-clkgen.c
+++ b/drivers/clk/clk-axi-clkgen.c
@@ -46,9 +46,17 @@
#define MMCM_CLK_DIV_DIVIDE BIT(11)
#define MMCM_CLK_DIV_NOCOUNT BIT(12)
+struct axi_clkgen_limits {
+ unsigned int fpfd_min;
+ unsigned int fpfd_max;
+ unsigned int fvco_min;
+ unsigned int fvco_max;
+};
+
struct axi_clkgen {
void __iomem *base;
struct clk_hw clk_hw;
+ struct axi_clkgen_limits limits;
};
static uint32_t axi_clkgen_lookup_filter(unsigned int m)
@@ -100,12 +108,15 @@ static uint32_t axi_clkgen_lookup_lock(unsigned int m)
return 0x1f1f00fa;
}
-static const unsigned int fpfd_min = 10000;
-static const unsigned int fpfd_max = 300000;
-static const unsigned int fvco_min = 600000;
-static const unsigned int fvco_max = 1200000;
+static const struct axi_clkgen_limits axi_clkgen_zynq_default_limits = {
+ .fpfd_min = 10000,
+ .fpfd_max = 300000,
+ .fvco_min = 600000,
+ .fvco_max = 1200000,
+};
-static void axi_clkgen_calc_params(unsigned long fin, unsigned long fout,
+static void axi_clkgen_calc_params(const struct axi_clkgen_limits *limits,
+ unsigned long fin, unsigned long fout,
unsigned int *best_d, unsigned int *best_m, unsigned int *best_dout)
{
unsigned long d, d_min, d_max, _d_min, _d_max;
@@ -122,12 +133,12 @@ static void axi_clkgen_calc_params(unsigned long fin, unsigned long fout,
*best_m = 0;
*best_dout = 0;
- d_min = max_t(unsigned long, DIV_ROUND_UP(fin, fpfd_max), 1);
- d_max = min_t(unsigned long, fin / fpfd_min, 80);
+ d_min = max_t(unsigned long, DIV_ROUND_UP(fin, limits->fpfd_max), 1);
+ d_max = min_t(unsigned long, fin / limits->fpfd_min, 80);
again:
- fvco_min_fract = fvco_min << fract_shift;
- fvco_max_fract = fvco_max << fract_shift;
+ fvco_min_fract = limits->fvco_min << fract_shift;
+ fvco_max_fract = limits->fvco_max << fract_shift;
m_min = max_t(unsigned long, DIV_ROUND_UP(fvco_min_fract, fin) * d_min, 1);
m_max = min_t(unsigned long, fvco_max_fract * d_max / fin, 64 << fract_shift);
@@ -319,6 +330,7 @@ static int axi_clkgen_set_rate(struct clk_hw *clk_hw,
unsigned long rate, unsigned long parent_rate)
{
struct axi_clkgen *axi_clkgen = clk_hw_to_axi_clkgen(clk_hw);
+ const struct axi_clkgen_limits *limits = &axi_clkgen->limits;
unsigned int d, m, dout;
struct axi_clkgen_div_params params;
uint32_t power = 0;
@@ -328,7 +340,7 @@ static int axi_clkgen_set_rate(struct clk_hw *clk_hw,
if (parent_rate == 0 || rate == 0)
return -EINVAL;
- axi_clkgen_calc_params(parent_rate, rate, &d, &m, &dout);
+ axi_clkgen_calc_params(limits, parent_rate, rate, &d, &m, &dout);
if (d == 0 || dout == 0 || m == 0)
return -EINVAL;
@@ -368,10 +380,12 @@ static int axi_clkgen_set_rate(struct clk_hw *clk_hw,
static long axi_clkgen_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *parent_rate)
{
+ struct axi_clkgen *axi_clkgen = clk_hw_to_axi_clkgen(hw);
+ const struct axi_clkgen_limits *limits = &axi_clkgen->limits;
unsigned int d, m, dout;
unsigned long long tmp;
- axi_clkgen_calc_params(*parent_rate, rate, &d, &m, &dout);
+ axi_clkgen_calc_params(limits, *parent_rate, rate, &d, &m, &dout);
if (d == 0 || dout == 0 || m == 0)
return -EINVAL;
@@ -482,17 +496,9 @@ static const struct clk_ops axi_clkgen_ops = {
.get_parent = axi_clkgen_get_parent,
};
-static const struct of_device_id axi_clkgen_ids[] = {
- {
- .compatible = "adi,axi-clkgen-2.00.a",
- },
- { },
-};
-MODULE_DEVICE_TABLE(of, axi_clkgen_ids);
-
static int axi_clkgen_probe(struct platform_device *pdev)
{
- const struct of_device_id *id;
+ const struct axi_clkgen_limits *dflt_limits;
struct axi_clkgen *axi_clkgen;
struct clk_init_data init;
const char *parent_names[2];
@@ -501,11 +507,8 @@ static int axi_clkgen_probe(struct platform_device *pdev)
unsigned int i;
int ret;
- if (!pdev->dev.of_node)
- return -ENODEV;
-
- id = of_match_node(axi_clkgen_ids, pdev->dev.of_node);
- if (!id)
+ dflt_limits = device_get_match_data(&pdev->dev);
+ if (!dflt_limits)
return -ENODEV;
axi_clkgen = devm_kzalloc(&pdev->dev, sizeof(*axi_clkgen), GFP_KERNEL);
@@ -527,6 +530,8 @@ static int axi_clkgen_probe(struct platform_device *pdev)
return -EINVAL;
}
+ memcpy(&axi_clkgen->limits, dflt_limits, sizeof(axi_clkgen->limits));
+
clk_name = pdev->dev.of_node->name;
of_property_read_string(pdev->dev.of_node, "clock-output-names",
&clk_name);
@@ -554,6 +559,15 @@ static int axi_clkgen_remove(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id axi_clkgen_ids[] = {
+ {
+ .compatible = "adi,axi-clkgen-2.00.a",
+ .data = &axi_clkgen_zynq_default_limits,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, axi_clkgen_ids);
+
static struct platform_driver axi_clkgen_driver = {
.driver = {
.name = "adi-axi-clkgen",
diff --git a/drivers/clk/clk-si5351.c b/drivers/clk/clk-si5351.c
index 1e1702e609cb..57e4597cdf4c 100644
--- a/drivers/clk/clk-si5351.c
+++ b/drivers/clk/clk-si5351.c
@@ -902,6 +902,10 @@ static int _si5351_clkout_set_disable_state(
static void _si5351_clkout_reset_pll(struct si5351_driver_data *drvdata, int num)
{
u8 val = si5351_reg_read(drvdata, SI5351_CLK0_CTRL + num);
+ u8 mask = val & SI5351_CLK_PLL_SELECT ? SI5351_PLL_RESET_B :
+ SI5351_PLL_RESET_A;
+ unsigned int v;
+ int err;
switch (val & SI5351_CLK_INPUT_MASK) {
case SI5351_CLK_INPUT_XTAL:
@@ -909,9 +913,12 @@ static void _si5351_clkout_reset_pll(struct si5351_driver_data *drvdata, int num
return; /* pll not used, no need to reset */
}
- si5351_reg_write(drvdata, SI5351_PLL_RESET,
- val & SI5351_CLK_PLL_SELECT ? SI5351_PLL_RESET_B :
- SI5351_PLL_RESET_A);
+ si5351_reg_write(drvdata, SI5351_PLL_RESET, mask);
+
+ err = regmap_read_poll_timeout(drvdata->regmap, SI5351_PLL_RESET, v,
+ !(v & mask), 0, 20000);
+ if (err < 0)
+ dev_err(&drvdata->client->dev, "Reset bit didn't clear\n");
dev_dbg(&drvdata->client->dev, "%s - %s: pll = %d\n",
__func__, clk_hw_get_name(&drvdata->clkout[num].hw),
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index a3041f9a5468..8c1d04db990d 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2314,6 +2314,8 @@ int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max)
if (!clk)
return 0;
+ trace_clk_set_rate_range(clk->core, min, max);
+
if (min > max) {
pr_err("%s: clk %s dev %s con %s: invalid range [%lu, %lu]\n",
__func__, clk->core->name, clk->dev_id, clk->con_id,
@@ -2381,6 +2383,8 @@ int clk_set_min_rate(struct clk *clk, unsigned long rate)
if (!clk)
return 0;
+ trace_clk_set_min_rate(clk->core, rate);
+
return clk_set_rate_range(clk, rate, clk->max_rate);
}
EXPORT_SYMBOL_GPL(clk_set_min_rate);
@@ -2397,6 +2401,8 @@ int clk_set_max_rate(struct clk *clk, unsigned long rate)
if (!clk)
return 0;
+ trace_clk_set_max_rate(clk->core, rate);
+
return clk_set_rate_range(clk, clk->min_rate, rate);
}
EXPORT_SYMBOL_GPL(clk_set_max_rate);
diff --git a/drivers/clk/ti/clk-54xx.c b/drivers/clk/ti/clk-54xx.c
index 8694bc9f5fc7..f0542391ca4b 100644
--- a/drivers/clk/ti/clk-54xx.c
+++ b/drivers/clk/ti/clk-54xx.c
@@ -605,7 +605,7 @@ static struct ti_dt_clk omap54xx_clks[] = {
int __init omap5xxx_dt_clk_init(void)
{
int rc;
- struct clk *abe_dpll_ref, *abe_dpll, *sys_32k_ck, *usb_dpll;
+ struct clk *abe_dpll_ref, *abe_dpll, *abe_dpll_byp, *sys_32k_ck, *usb_dpll;
ti_dt_clocks_register(omap54xx_clks);
@@ -616,6 +616,16 @@ int __init omap5xxx_dt_clk_init(void)
abe_dpll_ref = clk_get_sys(NULL, "abe_dpll_clk_mux");
sys_32k_ck = clk_get_sys(NULL, "sys_32k_ck");
rc = clk_set_parent(abe_dpll_ref, sys_32k_ck);
+
+ /*
+ * This must also be set to sys_32k_ck to match or
+ * the ABE DPLL will not lock on a warm reboot when
+ * ABE timers are used.
+ */
+ abe_dpll_byp = clk_get_sys(NULL, "abe_dpll_bypass_clk_mux");
+ if (!rc)
+ rc = clk_set_parent(abe_dpll_byp, sys_32k_ck);
+
abe_dpll = clk_get_sys(NULL, "dpll_abe_ck");
if (!rc)
rc = clk_set_rate(abe_dpll, OMAP5_DPLL_ABE_DEFFREQ);
diff --git a/drivers/clk/ti/fapll.c b/drivers/clk/ti/fapll.c
index 95e36ba64acc..8024c6d2b9e9 100644
--- a/drivers/clk/ti/fapll.c
+++ b/drivers/clk/ti/fapll.c
@@ -498,6 +498,7 @@ static struct clk * __init ti_fapll_synth_setup(struct fapll_data *fd,
{
struct clk_init_data *init;
struct fapll_synth *synth;
+ struct clk *clk = ERR_PTR(-ENOMEM);
init = kzalloc(sizeof(*init), GFP_KERNEL);
if (!init)
@@ -520,13 +521,19 @@ static struct clk * __init ti_fapll_synth_setup(struct fapll_data *fd,
synth->hw.init = init;
synth->clk_pll = pll_clk;
- return clk_register(NULL, &synth->hw);
+ clk = clk_register(NULL, &synth->hw);
+ if (IS_ERR(clk)) {
+ pr_err("failed to register clock\n");
+ goto free;
+ }
+
+ return clk;
free:
kfree(synth);
kfree(init);
- return ERR_PTR(-ENOMEM);
+ return clk;
}
static void __init ti_fapll_setup(struct device_node *node)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-22 13:08:23 +0300