On 12/22/2016 10:06 AM, Peng Fan wrote: > Implement ofdata_to_platdata to set the type to host or device. > - Check "dr-mode" property. > - If there is no "dr-mode", check phy_ctrl for i.MX6 > and phy_status for i.MX7 > > Signed-off-by: Peng Fan <peng....@nxp.com> > Cc: Marek Vasut <ma...@denx.de> > Cc: Simon Glass <s...@chromium.org> > Cc: Stefano Babic <sba...@denx.de> > --- > > V2: > Add a ehci_usb_phy_mode function to check phy mode when dr-mode is otg, > or no mode property provided. > > drivers/usb/host/ehci-mx6.c | 75 > +++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 75 insertions(+) > > diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c > index 48889c1..18b7fc3 100644 > --- a/drivers/usb/host/ehci-mx6.c > +++ b/drivers/usb/host/ehci-mx6.c > @@ -15,10 +15,13 @@ > #include <asm/arch/imx-regs.h> > #include <asm/arch/clock.h> > #include <asm/imx-common/iomux-v3.h> > +#include <asm/imx-common/sys_proto.h> > #include <dm.h> > > #include "ehci.h" > > +DECLARE_GLOBAL_DATA_PTR; > + > #define USB_OTGREGS_OFFSET 0x000 > #define USB_H1REGS_OFFSET 0x200 > #define USB_H2REGS_OFFSET 0x400 > @@ -48,6 +51,7 @@ > #define ANADIG_USB2_PLL_480_CTRL_EN_USB_CLKS 0x00000040 > > #define USBNC_OFFSET 0x200 > +#define USBNC_PHY_STATUS_OFFSET 0x23C > #define USBNC_PHYSTATUS_ID_DIG (1 << 4) /* otg_id status */ > #define USBNC_PHYCFG2_ACAENB (1 << 4) /* otg_id detection enable */ > #define UCTRL_PWR_POL (1 << 9) /* OTG Polarity of Power Pin */ > @@ -417,6 +421,76 @@ static const struct ehci_ops mx6_ehci_ops = { > .init_after_reset = mx6_init_after_reset > }; > > +static int ehci_usb_phy_mode(struct udevice *dev) > +{ > + struct usb_platdata *plat = dev_get_platdata(dev); > + void *__iomem addr = (void *__iomem)dev_get_addr(dev); > + void *__iomem phy_ctrl, *__iomem phy_status; > + const void *blob = gd->fdt_blob; > + int offset = dev->of_offset, phy_off; > + u32 val; > + > + /* > + * About fsl,usbphy, Refer to > + * Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt. > + */ > + if (is_mx6()) { > + phy_off = fdtdec_lookup_phandle(blob, > + offset, > + "fsl,usbphy");
This could be on a single line IMO. > + if (phy_off < 0) > + return -EINVAL; > + > + addr = (void __iomem *)fdtdec_get_addr(blob, phy_off, > + "reg"); Same here, shouldn't be over 80. Otherwise: Acked-by: Marek Vasut <ma...@denx.de> > + if ((fdt_addr_t)addr == FDT_ADDR_T_NONE) > + return -EINVAL; > + > + phy_ctrl = (void __iomem *)(addr + USBPHY_CTRL); > + val = readl(phy_ctrl); > + > + if (val & USBPHY_CTRL_OTG_ID) > + plat->init_type = USB_INIT_DEVICE; > + else > + plat->init_type = USB_INIT_HOST; > + } else if (is_mx7()) { > + phy_status = (void __iomem *)(addr + > + USBNC_PHY_STATUS_OFFSET); > + val = readl(phy_status); > + > + if (val & USBNC_PHYSTATUS_ID_DIG) > + plat->init_type = USB_INIT_DEVICE; > + else > + plat->init_type = USB_INIT_HOST; > + } else { > + return -EINVAL; > + } > + > + return 0; > +} > + > +static int ehci_usb_ofdata_to_platdata(struct udevice *dev) > +{ > + struct usb_platdata *plat = dev_get_platdata(dev); > + const char *mode; > + > + mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "dr_mode", NULL); > + if (mode) { > + if (strcmp(mode, "peripheral") == 0) > + plat->init_type = USB_INIT_DEVICE; > + else if (strcmp(mode, "host") == 0) > + plat->init_type = USB_INIT_HOST; > + else if (strcmp(mode, "otg") == 0) > + return ehci_usb_phy_mode(dev); > + else > + return -EINVAL; > + > + return 0; > + } > + > + return ehci_usb_phy_mode(dev); > +} > + > static int ehci_usb_probe(struct udevice *dev) > { > struct usb_platdata *plat = dev_get_platdata(dev); > @@ -460,6 +534,7 @@ U_BOOT_DRIVER(usb_mx6) = { > .name = "ehci_mx6", > .id = UCLASS_USB, > .of_match = mx6_usb_ids, > + .ofdata_to_platdata = ehci_usb_ofdata_to_platdata, > .probe = ehci_usb_probe, > .remove = ehci_deregister, > .ops = &ehci_usb_ops, > -- Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot