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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-22 20:30:52 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-22 20:30:52 +0400
commitb324c67d4800e59171f48d9ddab6cbfb59110482 (patch)
treea16509a710e76fa24c01514b60aed06b7db13716 /arch/arm/mach-spear3xx/clock.c
parent8dca6010d44cc722a94dc6da96560f9083dac782 (diff)
parent396d81cd0fe12ce5d1f6d159f093f9315d2837bc (diff)
downloadlinux-b324c67d4800e59171f48d9ddab6cbfb59110482.tar.xz
Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull device tree conversions for arm-soc, part 1, from Olof Johansson: "The spear3xx, lpc32xx, shmobile and mmp platforms are joining the game of booting using device trees, which is a great step forward for them. at91 and spear have pretty much completed this process with a huge amount of work being put into at91. The other platforms are continuing the process. We finally start to see the payback on this investment, as new machines are getting supported purely by adding a .dts source file that can be completely independent of the kernel source." Fix up trivial conflict in arch/arm/Kconfig * tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits) ARM: at91: Add ADC driver to at91sam9260/at91sam9g20 dtsi files arm/dts: omap4-panda: Add LEDs support arm/dts: omap4-sdp: Add LEDs support arm/dts: twl4030: Add twl4030-gpio node OMAP4: devices: Do not create mcpdm device if the dtb has been provided OMAP4: devices: Do not create dmic device if the dtb has been provided Documentation: update docs for mmp dt ARM: dts: refresh dts file for arch mmp ARM: mmp: support pxa910 with device tree ARM: mmp: support mmp2 with device tree gpio: pxa: parse gpio from DTS file ARM: mmp: support DT in timer ARM: mmp: support DT in irq ARM: mmp: append CONFIG_MACH_MMP2_DT ARM: mmp: fix build issue on mmp with device tree ARM: ux500: Enable PRCMU Timer 4 (clocksource) for Device Tree ARM: ux500: Disable SMSC911x platform code registration when DT is enabled ARM: ux500: Fork cpu-db8500 platform_devs for sequential DT enablement ARM: ux500: Do not attempt to register non-existent i2c devices on Snowball ARM: SPEAr3xx: Correct keyboard data passed from DT ...
Diffstat (limited to 'arch/arm/mach-spear3xx/clock.c')
-rw-r--r--arch/arm/mach-spear3xx/clock.c280
1 files changed, 206 insertions, 74 deletions
diff --git a/arch/arm/mach-spear3xx/clock.c b/arch/arm/mach-spear3xx/clock.c
index 6c4841f55223..cd6c11099083 100644
--- a/arch/arm/mach-spear3xx/clock.c
+++ b/arch/arm/mach-spear3xx/clock.c
@@ -11,12 +11,112 @@
* warranty of any kind, whether express or implied.
*/
+#include <linux/clkdev.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/of_platform.h>
#include <asm/mach-types.h>
#include <plat/clock.h>
#include <mach/misc_regs.h>
+#include <mach/spear.h>
+
+#define PLL1_CTR (MISC_BASE + 0x008)
+#define PLL1_FRQ (MISC_BASE + 0x00C)
+#define PLL1_MOD (MISC_BASE + 0x010)
+#define PLL2_CTR (MISC_BASE + 0x014)
+/* PLL_CTR register masks */
+#define PLL_ENABLE 2
+#define PLL_MODE_SHIFT 4
+#define PLL_MODE_MASK 0x3
+#define PLL_MODE_NORMAL 0
+#define PLL_MODE_FRACTION 1
+#define PLL_MODE_DITH_DSB 2
+#define PLL_MODE_DITH_SSB 3
+
+#define PLL2_FRQ (MISC_BASE + 0x018)
+/* PLL FRQ register masks */
+#define PLL_DIV_N_SHIFT 0
+#define PLL_DIV_N_MASK 0xFF
+#define PLL_DIV_P_SHIFT 8
+#define PLL_DIV_P_MASK 0x7
+#define PLL_NORM_FDBK_M_SHIFT 24
+#define PLL_NORM_FDBK_M_MASK 0xFF
+#define PLL_DITH_FDBK_M_SHIFT 16
+#define PLL_DITH_FDBK_M_MASK 0xFFFF
+
+#define PLL2_MOD (MISC_BASE + 0x01C)
+#define PLL_CLK_CFG (MISC_BASE + 0x020)
+#define CORE_CLK_CFG (MISC_BASE + 0x024)
+/* CORE CLK CFG register masks */
+#define PLL_HCLK_RATIO_SHIFT 10
+#define PLL_HCLK_RATIO_MASK 0x3
+#define HCLK_PCLK_RATIO_SHIFT 8
+#define HCLK_PCLK_RATIO_MASK 0x3
+
+#define PERIP_CLK_CFG (MISC_BASE + 0x028)
+/* PERIP_CLK_CFG register masks */
+#define UART_CLK_SHIFT 4
+#define UART_CLK_MASK 0x1
+#define FIRDA_CLK_SHIFT 5
+#define FIRDA_CLK_MASK 0x3
+#define GPT0_CLK_SHIFT 8
+#define GPT1_CLK_SHIFT 11
+#define GPT2_CLK_SHIFT 12
+#define GPT_CLK_MASK 0x1
+#define AUX_CLK_PLL3_VAL 0
+#define AUX_CLK_PLL1_VAL 1
+
+#define PERIP1_CLK_ENB (MISC_BASE + 0x02C)
+/* PERIP1_CLK_ENB register masks */
+#define UART_CLK_ENB 3
+#define SSP_CLK_ENB 5
+#define I2C_CLK_ENB 7
+#define JPEG_CLK_ENB 8
+#define FIRDA_CLK_ENB 10
+#define GPT1_CLK_ENB 11
+#define GPT2_CLK_ENB 12
+#define ADC_CLK_ENB 15
+#define RTC_CLK_ENB 17
+#define GPIO_CLK_ENB 18
+#define DMA_CLK_ENB 19
+#define SMI_CLK_ENB 21
+#define GMAC_CLK_ENB 23
+#define USBD_CLK_ENB 24
+#define USBH_CLK_ENB 25
+#define C3_CLK_ENB 31
+
+#define RAS_CLK_ENB (MISC_BASE + 0x034)
+
+#define PRSC1_CLK_CFG (MISC_BASE + 0x044)
+#define PRSC2_CLK_CFG (MISC_BASE + 0x048)
+#define PRSC3_CLK_CFG (MISC_BASE + 0x04C)
+/* gpt synthesizer register masks */
+#define GPT_MSCALE_SHIFT 0
+#define GPT_MSCALE_MASK 0xFFF
+#define GPT_NSCALE_SHIFT 12
+#define GPT_NSCALE_MASK 0xF
+
+#define AMEM_CLK_CFG (MISC_BASE + 0x050)
+#define EXPI_CLK_CFG (MISC_BASE + 0x054)
+#define CLCD_CLK_SYNT (MISC_BASE + 0x05C)
+#define FIRDA_CLK_SYNT (MISC_BASE + 0x060)
+#define UART_CLK_SYNT (MISC_BASE + 0x064)
+#define GMAC_CLK_SYNT (MISC_BASE + 0x068)
+#define RAS1_CLK_SYNT (MISC_BASE + 0x06C)
+#define RAS2_CLK_SYNT (MISC_BASE + 0x070)
+#define RAS3_CLK_SYNT (MISC_BASE + 0x074)
+#define RAS4_CLK_SYNT (MISC_BASE + 0x078)
+/* aux clk synthesiser register masks for irda to ras4 */
+#define AUX_SYNT_ENB 31
+#define AUX_EQ_SEL_SHIFT 30
+#define AUX_EQ_SEL_MASK 1
+#define AUX_EQ1_SEL 0
+#define AUX_EQ2_SEL 1
+#define AUX_XSCALE_SHIFT 16
+#define AUX_XSCALE_MASK 0xFFF
+#define AUX_YSCALE_SHIFT 0
+#define AUX_YSCALE_MASK 0xFFF
/* root clks */
/* 32 KHz oscillator clock */
@@ -411,6 +511,21 @@ static struct clk usbd_clk = {
.recalc = &follow_parent,
};
+/* clock derived from usbh clk */
+/* usbh0 clock */
+static struct clk usbh0_clk = {
+ .flags = ALWAYS_ENABLED,
+ .pclk = &usbh_clk,
+ .recalc = &follow_parent,
+};
+
+/* usbh1 clock */
+static struct clk usbh1_clk = {
+ .flags = ALWAYS_ENABLED,
+ .pclk = &usbh_clk,
+ .recalc = &follow_parent,
+};
+
/* clock derived from ahb clk */
/* apb masks structure */
static struct bus_clk_masks apb_masks = {
@@ -652,109 +767,126 @@ static struct clk pwm_clk = {
/* array of all spear 3xx clock lookups */
static struct clk_lookup spear_clk_lookups[] = {
- { .con_id = "apb_pclk", .clk = &dummy_apb_pclk},
+ CLKDEV_INIT(NULL, "apb_pclk", &dummy_apb_pclk),
/* root clks */
- { .con_id = "osc_32k_clk", .clk = &osc_32k_clk},
- { .con_id = "osc_24m_clk", .clk = &osc_24m_clk},
+ CLKDEV_INIT(NULL, "osc_32k_clk", &osc_32k_clk),
+ CLKDEV_INIT(NULL, "osc_24m_clk", &osc_24m_clk),
/* clock derived from 32 KHz osc clk */
- { .dev_id = "rtc-spear", .clk = &rtc_clk},
+ CLKDEV_INIT("fc900000.rtc", NULL, &rtc_clk),
/* clock derived from 24 MHz osc clk */
- { .con_id = "pll1_clk", .clk = &pll1_clk},
- { .con_id = "pll3_48m_clk", .clk = &pll3_48m_clk},
- { .dev_id = "wdt", .clk = &wdt_clk},
+ CLKDEV_INIT(NULL, "pll1_clk", &pll1_clk),
+ CLKDEV_INIT(NULL, "pll3_48m_clk", &pll3_48m_clk),
+ CLKDEV_INIT("fc880000.wdt", NULL, &wdt_clk),
/* clock derived from pll1 clk */
- { .con_id = "cpu_clk", .clk = &cpu_clk},
- { .con_id = "ahb_clk", .clk = &ahb_clk},
- { .con_id = "uart_synth_clk", .clk = &uart_synth_clk},
- { .con_id = "firda_synth_clk", .clk = &firda_synth_clk},
- { .con_id = "gpt0_synth_clk", .clk = &gpt0_synth_clk},
- { .con_id = "gpt1_synth_clk", .clk = &gpt1_synth_clk},
- { .con_id = "gpt2_synth_clk", .clk = &gpt2_synth_clk},
- { .dev_id = "uart", .clk = &uart_clk},
- { .dev_id = "firda", .clk = &firda_clk},
- { .dev_id = "gpt0", .clk = &gpt0_clk},
- { .dev_id = "gpt1", .clk = &gpt1_clk},
- { .dev_id = "gpt2", .clk = &gpt2_clk},
+ CLKDEV_INIT(NULL, "cpu_clk", &cpu_clk),
+ CLKDEV_INIT(NULL, "ahb_clk", &ahb_clk),
+ CLKDEV_INIT(NULL, "uart_synth_clk", &uart_synth_clk),
+ CLKDEV_INIT(NULL, "firda_synth_clk", &firda_synth_clk),
+ CLKDEV_INIT(NULL, "gpt0_synth_clk", &gpt0_synth_clk),
+ CLKDEV_INIT(NULL, "gpt1_synth_clk", &gpt1_synth_clk),
+ CLKDEV_INIT(NULL, "gpt2_synth_clk", &gpt2_synth_clk),
+ CLKDEV_INIT("d0000000.serial", NULL, &uart_clk),
+ CLKDEV_INIT("firda", NULL, &firda_clk),
+ CLKDEV_INIT("gpt0", NULL, &gpt0_clk),
+ CLKDEV_INIT("gpt1", NULL, &gpt1_clk),
+ CLKDEV_INIT("gpt2", NULL, &gpt2_clk),
/* clock derived from pll3 clk */
- { .dev_id = "designware_udc", .clk = &usbd_clk},
- { .con_id = "usbh_clk", .clk = &usbh_clk},
+ CLKDEV_INIT("designware_udc", NULL, &usbd_clk),
+ CLKDEV_INIT(NULL, "usbh_clk", &usbh_clk),
+ /* clock derived from usbh clk */
+ CLKDEV_INIT(NULL, "usbh.0_clk", &usbh0_clk),
+ CLKDEV_INIT(NULL, "usbh.1_clk", &usbh1_clk),
/* clock derived from ahb clk */
- { .con_id = "apb_clk", .clk = &apb_clk},
- { .dev_id = "i2c_designware.0", .clk = &i2c_clk},
- { .dev_id = "dma", .clk = &dma_clk},
- { .dev_id = "jpeg", .clk = &jpeg_clk},
- { .dev_id = "gmac", .clk = &gmac_clk},
- { .dev_id = "smi", .clk = &smi_clk},
- { .dev_id = "c3", .clk = &c3_clk},
+ CLKDEV_INIT(NULL, "apb_clk", &apb_clk),
+ CLKDEV_INIT("d0180000.i2c", NULL, &i2c_clk),
+ CLKDEV_INIT("fc400000.dma", NULL, &dma_clk),
+ CLKDEV_INIT("jpeg", NULL, &jpeg_clk),
+ CLKDEV_INIT("e0800000.eth", NULL, &gmac_clk),
+ CLKDEV_INIT("fc000000.flash", NULL, &smi_clk),
+ CLKDEV_INIT("c3", NULL, &c3_clk),
/* clock derived from apb clk */
- { .dev_id = "adc", .clk = &adc_clk},
- { .dev_id = "ssp-pl022.0", .clk = &ssp0_clk},
- { .dev_id = "gpio", .clk = &gpio_clk},
+ CLKDEV_INIT("adc", NULL, &adc_clk),
+ CLKDEV_INIT("d0100000.spi", NULL, &ssp0_clk),
+ CLKDEV_INIT("fc980000.gpio", NULL, &gpio_clk),
};
/* array of all spear 300 clock lookups */
#ifdef CONFIG_MACH_SPEAR300
static struct clk_lookup spear300_clk_lookups[] = {
- { .dev_id = "clcd", .clk = &clcd_clk},
- { .con_id = "fsmc", .clk = &fsmc_clk},
- { .dev_id = "gpio1", .clk = &gpio1_clk},
- { .dev_id = "keyboard", .clk = &kbd_clk},
- { .dev_id = "sdhci", .clk = &sdhci_clk},
+ CLKDEV_INIT("60000000.clcd", NULL, &clcd_clk),
+ CLKDEV_INIT("94000000.flash", NULL, &fsmc_clk),
+ CLKDEV_INIT("a9000000.gpio", NULL, &gpio1_clk),
+ CLKDEV_INIT("a0000000.kbd", NULL, &kbd_clk),
+ CLKDEV_INIT("70000000.sdhci", NULL, &sdhci_clk),
};
+
+void __init spear300_clk_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(spear_clk_lookups); i++)
+ clk_register(&spear_clk_lookups[i]);
+
+ for (i = 0; i < ARRAY_SIZE(spear300_clk_lookups); i++)
+ clk_register(&spear300_clk_lookups[i]);
+
+ clk_init();
+}
#endif
/* array of all spear 310 clock lookups */
#ifdef CONFIG_MACH_SPEAR310
static struct clk_lookup spear310_clk_lookups[] = {
- { .con_id = "fsmc", .clk = &fsmc_clk},
- { .con_id = "emi", .clk = &emi_clk},
- { .dev_id = "uart1", .clk = &uart1_clk},
- { .dev_id = "uart2", .clk = &uart2_clk},
- { .dev_id = "uart3", .clk = &uart3_clk},
- { .dev_id = "uart4", .clk = &uart4_clk},
- { .dev_id = "uart5", .clk = &uart5_clk},
+ CLKDEV_INIT("44000000.flash", NULL, &fsmc_clk),
+ CLKDEV_INIT(NULL, "emi", &emi_clk),
+ CLKDEV_INIT("b2000000.serial", NULL, &uart1_clk),
+ CLKDEV_INIT("b2080000.serial", NULL, &uart2_clk),
+ CLKDEV_INIT("b2100000.serial", NULL, &uart3_clk),
+ CLKDEV_INIT("b2180000.serial", NULL, &uart4_clk),
+ CLKDEV_INIT("b2200000.serial", NULL, &uart5_clk),
};
+
+void __init spear310_clk_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(spear_clk_lookups); i++)
+ clk_register(&spear_clk_lookups[i]);
+
+ for (i = 0; i < ARRAY_SIZE(spear310_clk_lookups); i++)
+ clk_register(&spear310_clk_lookups[i]);
+
+ clk_init();
+}
#endif
/* array of all spear 320 clock lookups */
#ifdef CONFIG_MACH_SPEAR320
static struct clk_lookup spear320_clk_lookups[] = {
- { .dev_id = "clcd", .clk = &clcd_clk},
- { .con_id = "fsmc", .clk = &fsmc_clk},
- { .dev_id = "i2c_designware.1", .clk = &i2c1_clk},
- { .con_id = "emi", .clk = &emi_clk},
- { .dev_id = "pwm", .clk = &pwm_clk},
- { .dev_id = "sdhci", .clk = &sdhci_clk},
- { .dev_id = "c_can_platform.0", .clk = &can0_clk},
- { .dev_id = "c_can_platform.1", .clk = &can1_clk},
- { .dev_id = "ssp-pl022.1", .clk = &ssp1_clk},
- { .dev_id = "ssp-pl022.2", .clk = &ssp2_clk},
- { .dev_id = "uart1", .clk = &uart1_clk},
- { .dev_id = "uart2", .clk = &uart2_clk},
-};
-#endif
-
-void __init spear3xx_clk_init(void)
+ CLKDEV_INIT("90000000.clcd", NULL, &clcd_clk),
+ CLKDEV_INIT("4c000000.flash", NULL, &fsmc_clk),
+ CLKDEV_INIT("a7000000.i2c", NULL, &i2c1_clk),
+ CLKDEV_INIT(NULL, "emi", &emi_clk),
+ CLKDEV_INIT("pwm", NULL, &pwm_clk),
+ CLKDEV_INIT("70000000.sdhci", NULL, &sdhci_clk),
+ CLKDEV_INIT("c_can_platform.0", NULL, &can0_clk),
+ CLKDEV_INIT("c_can_platform.1", NULL, &can1_clk),
+ CLKDEV_INIT("a5000000.spi", NULL, &ssp1_clk),
+ CLKDEV_INIT("a6000000.spi", NULL, &ssp2_clk),
+ CLKDEV_INIT("a3000000.serial", NULL, &uart1_clk),
+ CLKDEV_INIT("a4000000.serial", NULL, &uart2_clk),
+};
+
+void __init spear320_clk_init(void)
{
- int i, cnt;
- struct clk_lookup *lookups;
-
- if (machine_is_spear300()) {
- cnt = ARRAY_SIZE(spear300_clk_lookups);
- lookups = spear300_clk_lookups;
- } else if (machine_is_spear310()) {
- cnt = ARRAY_SIZE(spear310_clk_lookups);
- lookups = spear310_clk_lookups;
- } else {
- cnt = ARRAY_SIZE(spear320_clk_lookups);
- lookups = spear320_clk_lookups;
- }
+ int i;
for (i = 0; i < ARRAY_SIZE(spear_clk_lookups); i++)
clk_register(&spear_clk_lookups[i]);
- for (i = 0; i < cnt; i++)
- clk_register(&lookups[i]);
+ for (i = 0; i < ARRAY_SIZE(spear320_clk_lookups); i++)
+ clk_register(&spear320_clk_lookups[i]);
clk_init();
}
+#endif