On Wed, Jul 20, 2011 at 07:08:21PM +0800, Tony Lin wrote:
> configure usb1 phy power enable gpio and enable usb1 phy power
>
> Signed-off-by: Tony Lin <tony.lin@xxxxxxxxxxxxx>
> ---
> 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 */
> + 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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--
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