Dear Dan Murphy,
Add the support for the am437x xhci usb host.
The xHCI host on AM437 is connected to a usb2 phy so need to add support to enable those clocks.
Signed-off-by: Dan Murphy dmurphy@ti.com
arch/arm/include/asm/arch-am33xx/hardware_am43xx.h | 10 +++++++++ drivers/usb/phy/omap_usb_phy.c | 23 ++++++++++++++++++++ include/configs/am43xx_evm.h | 11 ++++++++++ include/linux/usb/xhci-omap.h | 4 ++++ 4 files changed, 48 insertions(+)
diff --git a/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h b/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h index 303c594..3b665e6 100644 --- a/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h +++ b/arch/arm/include/asm/arch-am33xx/hardware_am43xx.h @@ -51,4 +51,14 @@ /* RTC base address */ #define RTC_BASE 0x44E3E000
+/* USB Clock Control */ +#define PRM_PER_USB_OTG_SS0_CLKCTRL (CM_PER + 0x260) +#define PRM_PER_USB_OTG_SS1_CLKCTRL (CM_PER + 0x268) +#define USBOTGSSX_CLKCTRL_MODULE_EN (1 << 2) +#define USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960 (1 << 8)
+#define PRM_PER_USBPHYOCP2SCP0_CLKCTRL (CM_PER + 0x5b8) +#define PRM_PER_USBPHYOCP2SCP1_CLKCTRL (CM_PER + 0x5c0) +#define USBPHYOCPSCP_MODULE_EN (1 << 2)
#endif /* __AM43XX_HARDWARE_AM43XX_H */ diff --git a/drivers/usb/phy/omap_usb_phy.c b/drivers/usb/phy/omap_usb_phy.c index f1da73d..20c4805 100644 --- a/drivers/usb/phy/omap_usb_phy.c +++ b/drivers/usb/phy/omap_usb_phy.c @@ -207,6 +207,25 @@ void usb_phy_power(int on) } #endif /* CONFIG_OMAP_USB2PHY2_HOST */
+#ifdef CONFIG_AM437X_USB2PHY2_HOST +static void am437x_enable_usb2_phy2(struct omap_xhci *omap) +{
- int usb_otg_ss_clk_val = (USBOTGSSX_CLKCTRL_MODULE_EN |
USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960);
Other than that it should be "const", it should also be at least unsigned. And prefferably u32 .
Best regards, Marek Vasut