Include a weak function board_usb_phy_mode. usb_phy_enable decide whether the controller in device mode or in host mode by '*phy_ctrl & USBPHY_CTRL_OTG_ID'.
There are two usb port on mx6sxsabresd and also mx6slevk. 1. OTG port 2. HOST port There are connected to SOC USB controller OTG1 core and OTG2 core as following: OTG1 core <----> board OTG port OTG2 core <----> board HOST port However to these two board, no ID pin for the board host port. If only use '*phy_ctrl & USBPHY_CTRL_OTG_ID' to decide the work mode, the host port will not work, because "type = usb_phy_enable(index, ehci) ? USB_INIT_DEVICE : USB_INIT_HOST;" will always set 'type' with USB_INIT_DEVICE. So introduce this weak function to let board level code can decide to work in host or device mode, if board level code want to implement this function. Signed-off-by: Peng Fan <peng....@freescale.com> Signed-off-by: Ye Li <b37...@freescale.com> --- Changes v3: Take Marek's suggestions, replace 'return val & USBPHY_CTRL_OTG_ID' with this new function like 'return board_usb_phy_mode(index);' Here board_usb_phy_mode only has one parameter 'index' as board_ehci_power and board_echi_hcd_init do. "http://lists.denx.de/pipermail/u-boot/2014-November/194183.html"; has detailed discussion. Changes v2: Introduce a new weak function to let board have a choice to decide which mode to work at. drivers/usb/host/ehci-mx6.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c index 9ec5a0a..e2a247e 100644 --- a/drivers/usb/host/ehci-mx6.c +++ b/drivers/usb/host/ehci-mx6.c @@ -113,6 +113,20 @@ static void usb_power_config(int index) pll_480_ctrl_set); } +int __weak board_usb_phy_mode(int port) +{ + void __iomem *phy_reg; + void __iomem *phy_ctrl; + u32 val; + + phy_reg = (void __iomem *)phy_bases[port]; + phy_ctrl = (void __iomem *)(phy_reg + USBPHY_CTRL); + + val = __raw_readl(phy_ctrl); + + return val & USBPHY_CTRL_OTG_ID; +} + /* Return 0 : host node, <>0 : device mode */ static int usb_phy_enable(int index, struct usb_ehci *ehci) { @@ -160,7 +174,7 @@ static int usb_phy_enable(int index, struct usb_ehci *ehci) val |= (USBPHY_CTRL_ENUTMILEVEL2 | USBPHY_CTRL_ENUTMILEVEL3); __raw_writel(val, phy_ctrl); - return val & USBPHY_CTRL_OTG_ID; + return board_usb_phy_mode(index); } /* Base address for this IP block is 0x02184800 */ -- 1.8.4.5 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
