Thread (38 messages) 38 messages, 7 authors, 2011-07-22
STALE5429d
Revisions (8)
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[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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-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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