Newer AM437x silicon requires us to explicitly power up the USB2 PHY. By implementing usb_phy_power() we can achieve that.
Signed-off-by: Felipe Balbi <ba...@ti.com> --- arch/arm/include/asm/arch-am33xx/hardware_am43xx.h | 5 +++++ drivers/usb/phy/omap_usb_phy.c | 11 ++++++++++- 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h b/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h index b470319..efdecf4 100644 --- a/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h +++ b/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h @@ -43,6 +43,11 @@ #define VTP0_CTRL_ADDR 0x44E10E0C #define VTP1_CTRL_ADDR 0x48140E10 +/* USB CTRL Base Address */ +#define USB1_CTRL 0x44e10628 +#define USB1_CTRL_CM_PWRDN BIT(0) +#define USB1_CTRL_OTG_PWRDN BIT(1) + /* DDR Base address */ #define DDR_PHY_CMD_ADDR 0x44E12000 #define DDR_PHY_DATA_ADDR 0x44E120C8 diff --git a/drivers/usb/phy/omap_usb_phy.c b/drivers/usb/phy/omap_usb_phy.c index af46db2..53778b3 100644 --- a/drivers/usb/phy/omap_usb_phy.c +++ b/drivers/usb/phy/omap_usb_phy.c @@ -222,7 +222,16 @@ static void am437x_enable_usb2_phy2(struct omap_xhci *omap) void usb_phy_power(int on) { - return; + /* + * In order to get USB working on newer AM43xx silicon, we must + * explicitly power the USB PHYs. + */ + if (on) + clrbits_le32(USB1_CTRL, USB1_CTRL_CM_PWRDN | + USB1_CTRL_OTG_PWRDN); + else + setbits_le32(USB1_CTRL, USB1_CTRL_CM_PWRDN | + USB1_CTRL_OTG_PWRDN); } #endif /* CONFIG_AM437X_USB2PHY2_HOST */ -- 2.0.0.390.gcb682f8 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot