[PATCH 2/7] enable usb1 phy power supply
From: Wolfram Sang <hidden>
Date: 2011-07-20 11:41:00
On Wed, Jul 20, 2011 at 07:08:21PM +0800, Tony Lin wrote:
quoted hunk ↗ jump to hunk
configure usb1 phy power enable gpio and enable usb1 phy power Signed-off-by: Tony Lin <redacted> --- arch/arm/mach-mxs/mach-mx28evk.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-)diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c index eaaf6ff..6934867 100644 --- a/arch/arm/mach-mxs/mach-mx28evk.c +++ b/arch/arm/mach-mxs/mach-mx28evk.c@@ -34,6 +34,7 @@ #define MX28EVK_BL_ENABLE MXS_GPIO_NR(3, 18) #define MX28EVK_LCD_ENABLE MXS_GPIO_NR(3, 30) #define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13) +#define MX28EVK_USB1_PWR_EN MXS_GPIO_NR(3, 8) #define MX28EVK_MMC0_WRITE_PROTECT MXS_GPIO_NR(2, 12) #define MX28EVK_MMC1_WRITE_PROTECT MXS_GPIO_NR(0, 28)@@ -183,6 +184,8 @@ static const iomux_cfg_t mx28evk_pads[] __initconst = { /* led */ MX28_PAD_AUART1_TX__GPIO_3_5 | MXS_PAD_CTRL, + /* usb1 */
/* usb1 power enable */
quoted hunk ↗ jump to hunk
+ MX28_PAD_AUART2_RX__GPIO_3_8 | MXS_PAD_CTRL, }; /* led */@@ -405,6 +408,12 @@ static void __init mx28evk_init(void) pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret); mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]); + ret = gpio_request_one(MX28EVK_USB1_PWR_EN, GPIOF_DIR_OUT,
use GPIOF_OUT_INIT_HIGH here to save the set_value below and have less glitch on the line
+ "usb1-power-en");
+ if (ret)
+ pr_warn("failed to request gpio usb1-power-en %d\n", ret);
+ else
+ gpio_set_value(MX28EVK_USB1_PWR_EN, 1);
gpio_led_register_device(0, &mx28evk_led_data);
}
--
1.7.0.4
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