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arm: exynos: Add methods to control power to USB 3.0 PHY 

Adding methods to turn on/off power to USB3.0 type PHY
as and when required by the controller.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Julius Werner <jwerner@chromium.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Vasut <marex@denx.de>
This commit is contained in:
Vivek Gautam 2013-09-14 14:02:47 +05:30 committed by Marek Vasut
parent 13194f3b5f
commit 80c4c5964f
2 changed files with 27 additions and 0 deletions
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22
arch/arm/cpu/armv7/exynos/power.c
View File

@ -59,6 +59,28 @@ void set_usbhost_phy_ctrl(unsigned int enable)
exynos5_set_usbhost_phy_ctrl(enable);
}
static void exynos5_set_usbdrd_phy_ctrl(unsigned int enable)
{
struct exynos5_power *power =
(struct exynos5_power *)samsung_get_base_power();
if (enable) {
/* Enabling USBDRD_PHY */
setbits_le32(&power->usbdrd_phy_control,
POWER_USB_DRD_PHY_CTRL_EN);
} else {
/* Disabling USBDRD_PHY */
clrbits_le32(&power->usbdrd_phy_control,
POWER_USB_DRD_PHY_CTRL_EN);
}
}
void set_usbdrd_phy_ctrl(unsigned int enable)
{
if (cpu_is_exynos5())
exynos5_set_usbdrd_phy_ctrl(enable);
}
static void exynos5_dp_phy_control(unsigned int enable)
{
unsigned int cfg;

5
arch/arm/include/asm/arch-exynos/power.h
View File

@ -847,6 +847,11 @@ void set_hw_thermal_trip(void);
#define POWER_USB_HOST_PHY_CTRL_EN (1 << 0)
#define POWER_USB_HOST_PHY_CTRL_DISABLE (0 << 0)
void set_usbdrd_phy_ctrl(unsigned int enable);
#define POWER_USB_DRD_PHY_CTRL_EN (1 << 0)
#define POWER_USB_DRD_PHY_CTRL_DISABLE (0 << 0)
void set_dp_phy_ctrl(unsigned int enable);
#define EXYNOS_DP_PHY_ENABLE (1 << 0)