summaryrefslogtreecommitdiff
path: root/drivers/clk/rockchip
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/clk/rockchip')
-rw-r--r--drivers/clk/rockchip/clk-rk3188.c8
-rw-r--r--drivers/clk/rockchip/clk-rk3288.c104
-rw-r--r--drivers/clk/rockchip/clk.c73
-rw-r--r--drivers/clk/rockchip/clk.h1
4 files changed, 145 insertions, 41 deletions
diff --git a/drivers/clk/rockchip/clk-rk3188.c b/drivers/clk/rockchip/clk-rk3188.c
index a83a6d8d0fb6..0147614e94b8 100644
--- a/drivers/clk/rockchip/clk-rk3188.c
+++ b/drivers/clk/rockchip/clk-rk3188.c
@@ -599,6 +599,12 @@ static struct rockchip_clk_branch rk3188_clk_branches[] __initdata = {
GATE(ACLK_GPS, "aclk_gps", "aclk_peri", 0, RK2928_CLKGATE_CON(8), 13, GFLAGS),
};
+static const char *rk3188_critical_clocks[] __initconst = {
+ "aclk_cpu",
+ "aclk_peri",
+ "hclk_peri",
+};
+
static void __init rk3188_common_clk_init(struct device_node *np)
{
void __iomem *reg_base;
@@ -628,6 +634,8 @@ static void __init rk3188_common_clk_init(struct device_node *np)
RK3188_GRF_SOC_STATUS);
rockchip_clk_register_branches(common_clk_branches,
ARRAY_SIZE(common_clk_branches));
+ rockchip_clk_protect_critical(rk3188_critical_clocks,
+ ARRAY_SIZE(rk3188_critical_clocks));
rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0),
ROCKCHIP_SOFTRST_HIWORD_MASK);
diff --git a/drivers/clk/rockchip/clk-rk3288.c b/drivers/clk/rockchip/clk-rk3288.c
index 0d8c6c59a75e..21a5c74f1bec 100644
--- a/drivers/clk/rockchip/clk-rk3288.c
+++ b/drivers/clk/rockchip/clk-rk3288.c
@@ -143,7 +143,7 @@ static struct rockchip_pll_clock rk3288_pll_clks[] __initdata = {
[gpll] = PLL(pll_rk3066, PLL_GPLL, "gpll", mux_pll_p, 0, RK3288_PLL_CON(12),
RK3288_MODE_CON, 12, 8, rk3288_pll_rates),
[npll] = PLL(pll_rk3066, PLL_NPLL, "npll", mux_pll_p, 0, RK3288_PLL_CON(16),
- RK3288_MODE_CON, 14, 9, NULL),
+ RK3288_MODE_CON, 14, 9, rk3288_pll_rates),
};
static struct clk_div_table div_hclk_cpu_t[] = {
@@ -219,12 +219,12 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
RK3288_CLKSEL_CON(1), 15, 1, MFLAGS, 3, 5, DFLAGS),
DIV(0, "aclk_cpu_pre", "aclk_cpu_src", 0,
RK3288_CLKSEL_CON(1), 0, 3, DFLAGS),
- GATE(0, "aclk_cpu", "aclk_cpu_pre", 0,
+ GATE(ACLK_CPU, "aclk_cpu", "aclk_cpu_pre", 0,
RK3288_CLKGATE_CON(0), 3, GFLAGS),
- COMPOSITE_NOMUX(0, "pclk_cpu", "aclk_cpu_pre", 0,
+ COMPOSITE_NOMUX(PCLK_CPU, "pclk_cpu", "aclk_cpu_pre", 0,
RK3288_CLKSEL_CON(1), 12, 3, DFLAGS,
RK3288_CLKGATE_CON(0), 5, GFLAGS),
- COMPOSITE_NOMUX_DIVTBL(0, "hclk_cpu", "aclk_cpu_pre", 0,
+ COMPOSITE_NOMUX_DIVTBL(HCLK_CPU, "hclk_cpu", "aclk_cpu_pre", 0,
RK3288_CLKSEL_CON(1), 8, 2, DFLAGS, div_hclk_cpu_t,
RK3288_CLKGATE_CON(0), 4, GFLAGS),
GATE(0, "c2c_host", "aclk_cpu_src", 0,
@@ -296,6 +296,20 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
COMPOSITE(0, "aclk_vdpu", mux_pll_src_cpll_gpll_usb480m_p, 0,
RK3288_CLKSEL_CON(32), 14, 2, MFLAGS, 8, 5, DFLAGS,
RK3288_CLKGATE_CON(3), 11, GFLAGS),
+ /*
+ * We use aclk_vdpu by default GRF_SOC_CON0[7] setting in system,
+ * so we ignore the mux and make clocks nodes as following,
+ */
+ GATE(ACLK_VCODEC, "aclk_vcodec", "aclk_vdpu", 0,
+ RK3288_CLKGATE_CON(9), 0, GFLAGS),
+ /*
+ * We introduce a virtul node of hclk_vodec_pre_v to split one clock
+ * struct with a gate and a fix divider into two node in software.
+ */
+ GATE(0, "hclk_vcodec_pre_v", "aclk_vdpu", 0,
+ RK3288_CLKGATE_CON(3), 10, GFLAGS),
+ GATE(HCLK_VCODEC, "hclk_vcodec", "hclk_vcodec_pre", 0,
+ RK3288_CLKGATE_CON(9), 1, GFLAGS),
COMPOSITE(0, "aclk_vio0", mux_pll_src_cpll_gpll_usb480m_p, 0,
RK3288_CLKSEL_CON(31), 6, 2, MFLAGS, 0, 5, DFLAGS,
@@ -309,7 +323,7 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
COMPOSITE(0, "aclk_rga_pre", mux_pll_src_cpll_gpll_usb480m_p, 0,
RK3288_CLKSEL_CON(30), 6, 2, MFLAGS, 0, 5, DFLAGS,
RK3288_CLKGATE_CON(3), 5, GFLAGS),
- COMPOSITE(0, "sclk_rga", mux_pll_src_cpll_gpll_usb480m_p, 0,
+ COMPOSITE(SCLK_RGA, "sclk_rga", mux_pll_src_cpll_gpll_usb480m_p, 0,
RK3288_CLKSEL_CON(30), 14, 2, MFLAGS, 8, 5, DFLAGS,
RK3288_CLKGATE_CON(3), 4, GFLAGS),
@@ -320,35 +334,35 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
RK3288_CLKSEL_CON(29), 6, 2, MFLAGS, 8, 8, DFLAGS,
RK3288_CLKGATE_CON(3), 3, GFLAGS),
- COMPOSITE_NODIV(0, "sclk_edp_24m", mux_edp_24m_p, 0,
+ COMPOSITE_NODIV(SCLK_EDP_24M, "sclk_edp_24m", mux_edp_24m_p, 0,
RK3288_CLKSEL_CON(28), 15, 1, MFLAGS,
RK3288_CLKGATE_CON(3), 12, GFLAGS),
- COMPOSITE(0, "sclk_edp", mux_pll_src_cpll_gpll_npll_p, 0,
+ COMPOSITE(SCLK_EDP, "sclk_edp", mux_pll_src_cpll_gpll_npll_p, 0,
RK3288_CLKSEL_CON(28), 6, 2, MFLAGS, 0, 6, DFLAGS,
RK3288_CLKGATE_CON(3), 13, GFLAGS),
- COMPOSITE(0, "sclk_isp", mux_pll_src_cpll_gpll_npll_p, 0,
+ COMPOSITE(SCLK_ISP, "sclk_isp", mux_pll_src_cpll_gpll_npll_p, 0,
RK3288_CLKSEL_CON(6), 6, 2, MFLAGS, 0, 6, DFLAGS,
RK3288_CLKGATE_CON(3), 14, GFLAGS),
- COMPOSITE(0, "sclk_isp_jpe", mux_pll_src_cpll_gpll_npll_p, 0,
+ COMPOSITE(SCLK_ISP_JPE, "sclk_isp_jpe", mux_pll_src_cpll_gpll_npll_p, 0,
RK3288_CLKSEL_CON(6), 14, 2, MFLAGS, 8, 6, DFLAGS,
RK3288_CLKGATE_CON(3), 15, GFLAGS),
- GATE(0, "sclk_hdmi_hdcp", "xin24m", 0,
+ GATE(SCLK_HDMI_HDCP, "sclk_hdmi_hdcp", "xin24m", 0,
RK3288_CLKGATE_CON(5), 12, GFLAGS),
- GATE(0, "sclk_hdmi_cec", "xin32k", 0,
+ GATE(SCLK_HDMI_CEC, "sclk_hdmi_cec", "xin32k", 0,
RK3288_CLKGATE_CON(5), 11, GFLAGS),
- COMPOSITE(0, "aclk_hevc", mux_pll_src_cpll_gpll_npll_p, 0,
+ COMPOSITE(ACLK_HEVC, "aclk_hevc", mux_pll_src_cpll_gpll_npll_p, 0,
RK3288_CLKSEL_CON(39), 14, 2, MFLAGS, 8, 5, DFLAGS,
RK3288_CLKGATE_CON(13), 13, GFLAGS),
- DIV(0, "hclk_hevc", "aclk_hevc", 0,
+ DIV(HCLK_HEVC, "hclk_hevc", "aclk_hevc", 0,
RK3288_CLKSEL_CON(40), 12, 2, DFLAGS),
- COMPOSITE(0, "sclk_hevc_cabac", mux_pll_src_cpll_gpll_npll_p, 0,
+ COMPOSITE(SCLK_HEVC_CABAC, "sclk_hevc_cabac", mux_pll_src_cpll_gpll_npll_p, 0,
RK3288_CLKSEL_CON(42), 6, 2, MFLAGS, 0, 5, DFLAGS,
RK3288_CLKGATE_CON(13), 14, GFLAGS),
- COMPOSITE(0, "sclk_hevc_core", mux_pll_src_cpll_gpll_npll_p, 0,
+ COMPOSITE(SCLK_HEVC_CORE, "sclk_hevc_core", mux_pll_src_cpll_gpll_npll_p, 0,
RK3288_CLKSEL_CON(42), 14, 2, MFLAGS, 8, 5, DFLAGS,
RK3288_CLKGATE_CON(13), 15, GFLAGS),
@@ -371,13 +385,13 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
COMPOSITE(0, "aclk_peri_src", mux_pll_src_cpll_gpll_p, 0,
RK3288_CLKSEL_CON(10), 15, 1, MFLAGS, 0, 5, DFLAGS,
RK3288_CLKGATE_CON(2), 0, GFLAGS),
- COMPOSITE_NOMUX(0, "pclk_peri", "aclk_peri_src", 0,
+ COMPOSITE_NOMUX(PCLK_PERI, "pclk_peri", "aclk_peri_src", 0,
RK3288_CLKSEL_CON(10), 12, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO,
RK3288_CLKGATE_CON(2), 3, GFLAGS),
- COMPOSITE_NOMUX(0, "hclk_peri", "aclk_peri_src", 0,
+ COMPOSITE_NOMUX(HCLK_PERI, "hclk_peri", "aclk_peri_src", 0,
RK3288_CLKSEL_CON(10), 8, 2, DFLAGS | CLK_DIVIDER_POWER_OF_TWO,
RK3288_CLKGATE_CON(2), 2, GFLAGS),
- GATE(0, "aclk_peri", "aclk_peri_src", 0,
+ GATE(ACLK_PERI, "aclk_peri", "aclk_peri_src", 0,
RK3288_CLKGATE_CON(2), 1, GFLAGS),
/*
@@ -545,7 +559,7 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
GATE(PCLK_PWM, "pclk_pwm", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 0, GFLAGS),
GATE(PCLK_TIMER, "pclk_timer", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 1, GFLAGS),
GATE(PCLK_I2C0, "pclk_i2c0", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 2, GFLAGS),
- GATE(PCLK_I2C1, "pclk_i2c1", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 3, GFLAGS),
+ GATE(PCLK_I2C2, "pclk_i2c2", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 3, GFLAGS),
GATE(0, "pclk_ddrupctl0", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 14, GFLAGS),
GATE(0, "pclk_publ0", "pclk_cpu", 0, RK3288_CLKGATE_CON(10), 15, GFLAGS),
GATE(0, "pclk_ddrupctl1", "pclk_cpu", 0, RK3288_CLKGATE_CON(11), 0, GFLAGS),
@@ -603,7 +617,7 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
GATE(PCLK_I2C4, "pclk_i2c4", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 15, GFLAGS),
GATE(PCLK_UART3, "pclk_uart3", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 11, GFLAGS),
GATE(PCLK_UART4, "pclk_uart4", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 12, GFLAGS),
- GATE(PCLK_I2C2, "pclk_i2c2", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 13, GFLAGS),
+ GATE(PCLK_I2C1, "pclk_i2c1", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 13, GFLAGS),
GATE(PCLK_I2C3, "pclk_i2c3", "pclk_peri", 0, RK3288_CLKGATE_CON(6), 14, GFLAGS),
GATE(PCLK_SARADC, "pclk_saradc", "pclk_peri", 0, RK3288_CLKGATE_CON(7), 1, GFLAGS),
GATE(PCLK_TSADC, "pclk_tsadc", "pclk_peri", 0, RK3288_CLKGATE_CON(7), 2, GFLAGS),
@@ -643,34 +657,34 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
GATE(HCLK_RGA, "hclk_rga", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 1, GFLAGS),
GATE(HCLK_VOP0, "hclk_vop0", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 6, GFLAGS),
GATE(HCLK_VOP1, "hclk_vop1", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 8, GFLAGS),
- GATE(0, "hclk_vio_ahb_arbi", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 9, GFLAGS),
- GATE(0, "hclk_vio_niu", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 10, GFLAGS),
- GATE(0, "hclk_vip", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 15, GFLAGS),
+ GATE(HCLK_VIO_AHB_ARBI, "hclk_vio_ahb_arbi", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 9, GFLAGS),
+ GATE(HCLK_VIO_NIU, "hclk_vio_niu", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 10, GFLAGS),
+ GATE(HCLK_VIP, "hclk_vip", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 15, GFLAGS),
GATE(HCLK_IEP, "hclk_iep", "hclk_vio", 0, RK3288_CLKGATE_CON(15), 3, GFLAGS),
GATE(HCLK_ISP, "hclk_isp", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 1, GFLAGS),
- GATE(0, "hclk_vio2_h2p", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 10, GFLAGS),
- GATE(0, "pclk_mipi_dsi0", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 4, GFLAGS),
- GATE(0, "pclk_mipi_dsi1", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 5, GFLAGS),
- GATE(0, "pclk_mipi_csi", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 6, GFLAGS),
- GATE(0, "pclk_lvds_phy", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 7, GFLAGS),
- GATE(0, "pclk_edp_ctrl", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 8, GFLAGS),
- GATE(0, "pclk_hdmi_ctrl", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 9, GFLAGS),
- GATE(0, "pclk_vio2_h2p", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 11, GFLAGS),
+ GATE(HCLK_VIO2_H2P, "hclk_vio2_h2p", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 10, GFLAGS),
+ GATE(PCLK_MIPI_DSI0, "pclk_mipi_dsi0", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 4, GFLAGS),
+ GATE(PCLK_MIPI_DSI1, "pclk_mipi_dsi1", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 5, GFLAGS),
+ GATE(PCLK_MIPI_CSI, "pclk_mipi_csi", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 6, GFLAGS),
+ GATE(PCLK_LVDS_PHY, "pclk_lvds_phy", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 7, GFLAGS),
+ GATE(PCLK_EDP_CTRL, "pclk_edp_ctrl", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 8, GFLAGS),
+ GATE(PCLK_HDMI_CTRL, "pclk_hdmi_ctrl", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 9, GFLAGS),
+ GATE(PCLK_VIO2_H2P, "pclk_vio2_h2p", "hclk_vio", 0, RK3288_CLKGATE_CON(16), 11, GFLAGS),
/* aclk_vio0 gates */
GATE(ACLK_VOP0, "aclk_vop0", "aclk_vio0", 0, RK3288_CLKGATE_CON(15), 5, GFLAGS),
- GATE(0, "aclk_iep", "aclk_vio0", 0, RK3288_CLKGATE_CON(15), 2, GFLAGS),
- GATE(0, "aclk_vio0_niu", "aclk_vio0", 0, RK3288_CLKGATE_CON(15), 11, GFLAGS),
- GATE(0, "aclk_vip", "aclk_vio0", 0, RK3288_CLKGATE_CON(15), 14, GFLAGS),
+ GATE(ACLK_IEP, "aclk_iep", "aclk_vio0", 0, RK3288_CLKGATE_CON(15), 2, GFLAGS),
+ GATE(ACLK_VIO0_NIU, "aclk_vio0_niu", "aclk_vio0", 0, RK3288_CLKGATE_CON(15), 11, GFLAGS),
+ GATE(ACLK_VIP, "aclk_vip", "aclk_vio0", 0, RK3288_CLKGATE_CON(15), 14, GFLAGS),
/* aclk_vio1 gates */
GATE(ACLK_VOP1, "aclk_vop1", "aclk_vio1", 0, RK3288_CLKGATE_CON(15), 7, GFLAGS),
- GATE(0, "aclk_isp", "aclk_vio1", 0, RK3288_CLKGATE_CON(16), 2, GFLAGS),
- GATE(0, "aclk_vio1_niu", "aclk_vio1", 0, RK3288_CLKGATE_CON(15), 12, GFLAGS),
+ GATE(ACLK_ISP, "aclk_isp", "aclk_vio1", 0, RK3288_CLKGATE_CON(16), 2, GFLAGS),
+ GATE(ACLK_VIO1_NIU, "aclk_vio1_niu", "aclk_vio1", 0, RK3288_CLKGATE_CON(15), 12, GFLAGS),
/* aclk_rga_pre gates */
GATE(ACLK_RGA, "aclk_rga", "aclk_rga_pre", 0, RK3288_CLKGATE_CON(15), 0, GFLAGS),
- GATE(0, "aclk_rga_niu", "aclk_rga_pre", 0, RK3288_CLKGATE_CON(15), 13, GFLAGS),
+ GATE(ACLK_RGA_NIU, "aclk_rga_niu", "aclk_rga_pre", 0, RK3288_CLKGATE_CON(15), 13, GFLAGS),
/*
* Other ungrouped clocks.
@@ -680,6 +694,12 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
GATE(0, "pclk_isp_in", "ext_isp", 0, RK3288_CLKGATE_CON(16), 3, GFLAGS),
};
+static const char *rk3288_critical_clocks[] __initconst = {
+ "aclk_cpu",
+ "aclk_peri",
+ "hclk_peri",
+};
+
static void __init rk3288_clk_init(struct device_node *np)
{
void __iomem *reg_base;
@@ -705,13 +725,21 @@ static void __init rk3288_clk_init(struct device_node *np)
pr_warn("%s: could not register clock usb480m: %ld\n",
__func__, PTR_ERR(clk));
+ clk = clk_register_fixed_factor(NULL, "hclk_vcodec_pre",
+ "hclk_vcodec_pre_v", 0, 1, 4);
+ if (IS_ERR(clk))
+ pr_warn("%s: could not register clock hclk_vcodec_pre: %ld\n",
+ __func__, PTR_ERR(clk));
+
rockchip_clk_register_plls(rk3288_pll_clks,
ARRAY_SIZE(rk3288_pll_clks),
RK3288_GRF_SOC_STATUS);
rockchip_clk_register_branches(rk3288_clk_branches,
ARRAY_SIZE(rk3288_clk_branches));
+ rockchip_clk_protect_critical(rk3288_critical_clocks,
+ ARRAY_SIZE(rk3288_critical_clocks));
- rockchip_register_softrst(np, 9, reg_base + RK3288_SOFTRST_CON(0),
+ rockchip_register_softrst(np, 12, reg_base + RK3288_SOFTRST_CON(0),
ROCKCHIP_SOFTRST_HIWORD_MASK);
}
CLK_OF_DECLARE(rk3288_cru, "rockchip,rk3288-cru", rk3288_clk_init);
diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
index 278cf9dd1e23..d9c6db2151ba 100644
--- a/drivers/clk/rockchip/clk.c
+++ b/drivers/clk/rockchip/clk.c
@@ -37,7 +37,7 @@
*
* sometimes without one of those components.
*/
-struct clk *rockchip_clk_register_branch(const char *name,
+static struct clk *rockchip_clk_register_branch(const char *name,
const char **parent_names, u8 num_parents, void __iomem *base,
int muxdiv_offset, u8 mux_shift, u8 mux_width, u8 mux_flags,
u8 div_shift, u8 div_width, u8 div_flags,
@@ -103,6 +103,54 @@ struct clk *rockchip_clk_register_branch(const char *name,
return clk;
}
+static struct clk *rockchip_clk_register_frac_branch(const char *name,
+ const char **parent_names, u8 num_parents, void __iomem *base,
+ int muxdiv_offset, u8 div_flags,
+ int gate_offset, u8 gate_shift, u8 gate_flags,
+ unsigned long flags, spinlock_t *lock)
+{
+ struct clk *clk;
+ struct clk_gate *gate = NULL;
+ struct clk_fractional_divider *div = NULL;
+ const struct clk_ops *div_ops = NULL, *gate_ops = NULL;
+
+ if (gate_offset >= 0) {
+ gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+ if (!gate)
+ return ERR_PTR(-ENOMEM);
+
+ gate->flags = gate_flags;
+ gate->reg = base + gate_offset;
+ gate->bit_idx = gate_shift;
+ gate->lock = lock;
+ gate_ops = &clk_gate_ops;
+ }
+
+ if (muxdiv_offset < 0)
+ return ERR_PTR(-EINVAL);
+
+ div = kzalloc(sizeof(*div), GFP_KERNEL);
+ if (!div)
+ return ERR_PTR(-ENOMEM);
+
+ div->flags = div_flags;
+ div->reg = base + muxdiv_offset;
+ div->mshift = 16;
+ div->mmask = 0xffff0000;
+ div->nshift = 0;
+ div->nmask = 0xffff;
+ div->lock = lock;
+ div_ops = &clk_fractional_divider_ops;
+
+ clk = clk_register_composite(NULL, name, parent_names, num_parents,
+ NULL, NULL,
+ &div->hw, div_ops,
+ gate ? &gate->hw : NULL, gate_ops,
+ flags);
+
+ return clk;
+}
+
static DEFINE_SPINLOCK(clk_lock);
static struct clk **clk_table;
static void __iomem *reg_base;
@@ -197,8 +245,14 @@ void __init rockchip_clk_register_branches(
list->div_flags, &clk_lock);
break;
case branch_fraction_divider:
- /* unimplemented */
- continue;
+ /* keep all gates untouched for now */
+ flags |= CLK_IGNORE_UNUSED;
+
+ clk = rockchip_clk_register_frac_branch(list->name,
+ list->parent_names, list->num_parents,
+ reg_base, list->muxdiv_offset, list->div_flags,
+ list->gate_offset, list->gate_shift,
+ list->gate_flags, flags, &clk_lock);
break;
case branch_gate:
flags |= CLK_SET_RATE_PARENT;
@@ -242,3 +296,16 @@ void __init rockchip_clk_register_branches(
rockchip_clk_add_lookup(clk, list->id);
}
}
+
+void __init rockchip_clk_protect_critical(const char *clocks[], int nclocks)
+{
+ int i;
+
+ /* Protect the clocks that needs to stay on */
+ for (i = 0; i < nclocks; i++) {
+ struct clk *clk = __clk_lookup(clocks[i]);
+
+ if (clk)
+ clk_prepare_enable(clk);
+ }
+}
diff --git a/drivers/clk/rockchip/clk.h b/drivers/clk/rockchip/clk.h
index 887cbdeca2aa..2b0bca19db47 100644
--- a/drivers/clk/rockchip/clk.h
+++ b/drivers/clk/rockchip/clk.h
@@ -329,6 +329,7 @@ void rockchip_clk_register_branches(struct rockchip_clk_branch *clk_list,
unsigned int nr_clk);
void rockchip_clk_register_plls(struct rockchip_pll_clock *pll_list,
unsigned int nr_pll, int grf_lock_offset);
+void rockchip_clk_protect_critical(const char *clocks[], int nclocks);
#define ROCKCHIP_SOFTRST_HIWORD_MASK BIT(0)
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-14 19:59:10 +0300