mx53loco: Turn on VUSB regulator

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>
Acked-by: Jason Liu <r64343@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>

diff --git a/board/freescale/mx53loco/mx53loco.c b/board/freescale/mx53loco/mx53loco.c
index 8f5ded988d10c00503f737dc0fad6af461437db4..a49b00a81252ae4a673aa8163fce15244a860bcc 100644 (file)
--- 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 3b7cd37fb70c9e61f2c2f0a6715b15d387c62da6..64c1e2ef65e15bab8f9f5aaf0a6cdb4b1fee6c5a 100644 (file)
--- 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