[PATCH 3/6] ARM: EXYNOS: Add usb otg phy control for EXYNOS4210
Joonyoung Shim
jy0922.shim at samsung.com
Wed Dec 28 02:03:24 EST 2011
This patch supports to control usb otg phy of EXYNOS4210.
Signed-off-by: Joonyoung Shim <jy0922.shim at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
arch/arm/mach-exynos/include/mach/irqs.h | 2 +-
arch/arm/mach-exynos/include/mach/map.h | 4 +
arch/arm/mach-exynos/include/mach/regs-pmu.h | 3 +
arch/arm/mach-exynos/setup-usb-phy.c | 95 +++++++++++++++++++-------
4 files changed, 78 insertions(+), 26 deletions(-)
diff --git a/arch/arm/mach-exynos/include/mach/irqs.h b/arch/arm/mach-exynos/include/mach/irqs.h
index 1d401c9..6e61f1d 100644
--- a/arch/arm/mach-exynos/include/mach/irqs.h
+++ b/arch/arm/mach-exynos/include/mach/irqs.h
@@ -79,7 +79,7 @@
#define IRQ_SPI2 IRQ_SPI(68)
#define IRQ_USB_HOST IRQ_SPI(70)
-#define IRQ_USB_HSOTG IRQ_SPI(71)
+#define IRQ_OTG IRQ_SPI(71)
#define IRQ_MODEM_IF IRQ_SPI(72)
#define IRQ_HSMMC0 IRQ_SPI(73)
#define IRQ_HSMMC1 IRQ_SPI(74)
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index 9b7e0a1..ed2b61c 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -33,6 +33,9 @@
#define EXYNOS4_PA_G2D 0x12800000
+#define EXYNOS4_PA_USB_HSOTG 0x12480000
+#define EXYNOS4_PA_USB_HSPHY 0x125B0000
+
#define EXYNOS4_PA_I2S0 0x03830000
#define EXYNOS4_PA_I2S1 0xE3100000
#define EXYNOS4_PA_I2S2 0xE2A00000
@@ -155,6 +158,7 @@
#define S3C_PA_IIC6 EXYNOS4_PA_IIC(6)
#define S3C_PA_IIC7 EXYNOS4_PA_IIC(7)
#define S3C_PA_RTC EXYNOS4_PA_RTC
+#define S3C_PA_USB_HSOTG EXYNOS4_PA_USB_HSOTG
#define S3C_PA_WDT EXYNOS4_PA_WATCHDOG
#define S3C_PA_UART EXYNOS4_PA_UART
#define S3C_PA_SPI0 EXYNOS4_PA_SPI0
diff --git a/arch/arm/mach-exynos/include/mach/regs-pmu.h b/arch/arm/mach-exynos/include/mach/regs-pmu.h
index 4fff8e9..e181f2a 100644
--- a/arch/arm/mach-exynos/include/mach/regs-pmu.h
+++ b/arch/arm/mach-exynos/include/mach/regs-pmu.h
@@ -162,6 +162,9 @@
#define S5P_CHECK_SLEEP 0x00000BAD
/* Only for EXYNOS4210 */
+#define S5P_USBDEVICE_PHY_CONTROL S5P_PMUREG(0x0704)
+#define S5P_USBDEVICE_PHY_ENABLE (1 << 0)
+
#define S5P_USBHOST_PHY_CONTROL S5P_PMUREG(0x0708)
#define S5P_USBHOST_PHY_ENABLE (1 << 0)
diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c
index 41743d2..6cf5d6a 100644
--- a/arch/arm/mach-exynos/setup-usb-phy.c
+++ b/arch/arm/mach-exynos/setup-usb-phy.c
@@ -26,11 +26,72 @@ static int exynos4_usb_host_phy_is_on(void)
return (readl(EXYNOS4_PHYPWR) & PHY1_STD_ANALOG_POWERDOWN) ? 0 : 1;
}
-static int exynos4_usb_phy1_init(struct platform_device *pdev)
+static void exynos4_usb_phy_clkset(struct platform_device *pdev)
{
- struct clk *otg_clk;
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;
+ }
+ clk_put(xusbxti_clk);
+ }
+
+ writel(phyclk, EXYNOS4_PHYCLK);
+}
+
+static int exynos4_usb_phy0_init(struct platform_device *pdev)
+{
+ u32 rstcon;
+
+ writel(readl(S5P_USBDEVICE_PHY_CONTROL) | S5P_USBDEVICE_PHY_ENABLE,
+ S5P_USBDEVICE_PHY_CONTROL);
+
+ exynos4_usb_phy_clkset(pdev);
+
+ /* set to normal PHY0 */
+ writel((readl(EXYNOS4_PHYPWR) & ~PHY0_NORMAL_MASK), EXYNOS4_PHYPWR);
+
+ /* reset PHY0 and Link */
+ rstcon = readl(EXYNOS4_RSTCON) | PHY0_SWRST_MASK;
+ writel(rstcon, EXYNOS4_RSTCON);
+ udelay(10);
+
+ rstcon &= ~PHY0_SWRST_MASK;
+ writel(rstcon, EXYNOS4_RSTCON);
+ udelay(80);
+
+ return 0;
+}
+
+static int exynos4_usb_phy0_exit(struct platform_device *pdev)
+{
+ writel((readl(EXYNOS4_PHYPWR) | PHY0_ANALOG_POWERDOWN |
+ PHY0_OTG_DISABLE), EXYNOS4_PHYPWR);
+
+ writel(readl(S5P_USBDEVICE_PHY_CONTROL) & ~S5P_USBDEVICE_PHY_ENABLE,
+ S5P_USBDEVICE_PHY_CONTROL);
+
+ return 0;
+}
+
+static int exynos4_usb_phy1_init(struct platform_device *pdev)
+{
+ struct clk *otg_clk;
u32 rstcon;
int err;
@@ -54,27 +115,7 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
writel(readl(S5P_USBHOST_PHY_CONTROL) | S5P_USBHOST_PHY_ENABLE,
S5P_USBHOST_PHY_CONTROL);
- /* 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;
- }
- clk_put(xusbxti_clk);
- }
-
- writel(phyclk, EXYNOS4_PHYCLK);
+ exynos4_usb_phy_clkset(pdev);
/* floating prevention logic: disable */
writel((readl(EXYNOS4_PHY1CON) | FPENABLEN), EXYNOS4_PHY1CON);
@@ -136,7 +177,9 @@ static int exynos4_usb_phy1_exit(struct platform_device *pdev)
int s5p_usb_phy_init(struct platform_device *pdev, int type)
{
- if (type == S5P_USB_PHY_HOST)
+ if (type == S5P_USB_PHY_DEVICE)
+ return exynos4_usb_phy0_init(pdev);
+ else if (type == S5P_USB_PHY_HOST)
return exynos4_usb_phy1_init(pdev);
return -EINVAL;
@@ -144,7 +187,9 @@ int s5p_usb_phy_init(struct platform_device *pdev, int type)
int s5p_usb_phy_exit(struct platform_device *pdev, int type)
{
- if (type == S5P_USB_PHY_HOST)
+ if (type == S5P_USB_PHY_DEVICE)
+ return exynos4_usb_phy0_exit(pdev);
+ else if (type == S5P_USB_PHY_HOST)
return exynos4_usb_phy1_exit(pdev);
return -EINVAL;
--
1.7.5.4
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