[PATCH 2/7] enable usb1 phy power supply

[Wolfram Sang]

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 at freescale.com>
> ---
>  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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> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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