[U-Boot] [PATCH 3/4] mx53loco: Turn on VUSB regulator

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <fabio.estevam@freescale.com>

On the mx53loco board with mc34708 PMIC it is necessary to turn on VUSB regulator
so that the mx53 USBH1 PHY receives the 3.3V voltage.

Tested by inserting a USB pen drive in the upper USB slot (USBH1) and then issued the
commands:

usb start

usb info

,which correctly detected and printed the USB pen drive information.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
 board/freescale/mx53loco/mx53loco.c |    9 +++++++++
 include/fsl_pmic.h                  |    1 +
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/board/freescale/mx53loco/mx53loco.c b/board/freescale/mx53loco/mx53loco.c
index 8c18b99..4d3b73d 100644
--- a/board/freescale/mx53loco/mx53loco.c
+++ b/board/freescale/mx53loco/mx53loco.c
@@ -359,6 +359,15 @@ static int power_init(void)
 		pmic_reg_read(p, REG_POWER_CTL2, &val);
 		val = (val & ~TIMER_MASK_MC34708) | TIMER_4S_MC34708;
 		ret |= pmic_reg_write(p, REG_POWER_CTL2, val);
+
+		/* Set VUSBSEL and VUSBEN for USB PHY supply*/
+		pmic_reg_read(p, REG_MODE_0, &val);
+		val |= (VUSBSEL_MC34708 | VUSBEN_MC34708);
+		ret |= pmic_reg_write(p, REG_MODE_0, val);
+
+		/* Set SWBST to 5V in auto mode */
+		val = SWBST_AUTO;
+		ret |= pmic_reg_write(p, SWBST_CTRL, val);
 	}
 
 	return ret;
diff --git a/include/fsl_pmic.h b/include/fsl_pmic.h
index 3b7cd37..64c1e2e 100644
--- a/include/fsl_pmic.h
+++ b/include/fsl_pmic.h
@@ -131,5 +131,6 @@ enum {
 #define VUSBSEL_MC34708		(1 << 2)
 #define VUSBEN_MC34708		(1 << 3)
 #define SWBST_CTRL		31
+#define SWBST_AUTO		0x8
 
 #endif
-- 
1.7.1