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ARM: EXYNOS: Update HSOTG PHY clock setting for EXYNOS4X12 

Adds clock setting entries for EXYNOS4212 and EXYNOS4412 platforms.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
[fixed compilation warning which is reported by Arnd Bergmann]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Sachin Kamat 2012-06-20 16:34:25 +09:00 committed by Kukjin Kim
parent 7d896aaceb
commit c4c7135544
3 changed files with 63 additions and 21 deletions
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20
arch/arm/mach-exynos/include/mach/regs-usb-phy.h
View File

@ -35,11 +35,21 @@
#define PHY1_COMMON_ON_N (1 << 7)
#define PHY0_COMMON_ON_N (1 << 4)
#define PHY0_ID_PULLUP (1 << 2)
#define CLKSEL_MASK (0x3 << 0)
#define CLKSEL_SHIFT (0)
#define CLKSEL_48M (0x0 << 0)
#define CLKSEL_12M (0x2 << 0)
#define CLKSEL_24M (0x3 << 0)
#define EXYNOS4_CLKSEL_SHIFT (0)
#define EXYNOS4210_CLKSEL_MASK (0x3 << 0)
#define EXYNOS4210_CLKSEL_48M (0x0 << 0)
#define EXYNOS4210_CLKSEL_12M (0x2 << 0)
#define EXYNOS4210_CLKSEL_24M (0x3 << 0)
#define EXYNOS4X12_CLKSEL_MASK (0x7 << 0)
#define EXYNOS4X12_CLKSEL_9600K (0x0 << 0)
#define EXYNOS4X12_CLKSEL_10M (0x1 << 0)
#define EXYNOS4X12_CLKSEL_12M (0x2 << 0)
#define EXYNOS4X12_CLKSEL_19200K (0x3 << 0)
#define EXYNOS4X12_CLKSEL_20M (0x4 << 0)
#define EXYNOS4X12_CLKSEL_24M (0x5 << 0)
#define EXYNOS4_RSTCON EXYNOS4_HSOTG_PHYREG(0x08)
#define HOST_LINK_PORT_SWRST_MASK (0xf << 6)

60
arch/arm/mach-exynos/setup-usb-phy.c
View File

@ -31,27 +31,55 @@ static void exynos4210_usb_phy_clkset(struct platform_device *pdev)
struct clk *xusbxti_clk;
u32 phyclk;
/* set clock frequency for PLL */
phyclk = readl(EXYNOS4_PHYCLK) & ~CLKSEL_MASK;
xusbxti_clk = clk_get(&pdev->dev, "xusbxti");
if (xusbxti_clk && !IS_ERR(xusbxti_clk)) {
switch (clk_get_rate(xusbxti_clk)) {
case 12 * MHZ:
phyclk |= CLKSEL_12M;
break;
case 24 * MHZ:
phyclk |= CLKSEL_24M;
break;
default:
case 48 * MHZ:
/* default reference clock */
break;
if (soc_is_exynos4210()) {
/* set clock frequency for PLL */
phyclk = readl(EXYNOS4_PHYCLK) & ~EXYNOS4210_CLKSEL_MASK;
switch (clk_get_rate(xusbxti_clk)) {
case 12 * MHZ:
phyclk |= EXYNOS4210_CLKSEL_12M;
break;
case 48 * MHZ:
phyclk |= EXYNOS4210_CLKSEL_48M;
break;
default:
case 24 * MHZ:
phyclk |= EXYNOS4210_CLKSEL_24M;
break;
}
writel(phyclk, EXYNOS4_PHYCLK);
} else if (soc_is_exynos4212() || soc_is_exynos4412()) {
/* set clock frequency for PLL */
phyclk = readl(EXYNOS4_PHYCLK) & ~EXYNOS4X12_CLKSEL_MASK;
switch (clk_get_rate(xusbxti_clk)) {
case 9600 * KHZ:
phyclk |= EXYNOS4X12_CLKSEL_9600K;
break;
case 10 * MHZ:
phyclk |= EXYNOS4X12_CLKSEL_10M;
break;
case 12 * MHZ:
phyclk |= EXYNOS4X12_CLKSEL_12M;
break;
case 19200 * KHZ:
phyclk |= EXYNOS4X12_CLKSEL_19200K;
break;
case 20 * MHZ:
phyclk |= EXYNOS4X12_CLKSEL_20M;
break;
default:
case 24 * MHZ:
/* default reference clock */
phyclk |= EXYNOS4X12_CLKSEL_24M;
break;
}
writel(phyclk, EXYNOS4_PHYCLK);
}
clk_put(xusbxti_clk);
}
writel(phyclk, EXYNOS4_PHYCLK);
}
static int exynos4210_usb_phy0_init(struct platform_device *pdev)

4
arch/arm/plat-samsung/include/plat/cpu.h
View File

@ -132,6 +132,10 @@ IS_SAMSUNG_CPU(exynos5250, EXYNOS5250_SOC_ID, EXYNOS5_SOC_MASK)
#define IODESC_ENT(x) { (unsigned long)S3C24XX_VA_##x, __phys_to_pfn(S3C24XX_PA_##x), S3C24XX_SZ_##x, MT_DEVICE }
#ifndef KHZ
#define KHZ (1000)
#endif
#ifndef MHZ
#define MHZ (1000*1000)
#endif