diff options
author | Peng Fan <peng.fan@nxp.com> | 2016-12-22 12:06:42 +0300 |
---|---|---|
committer | Marek Vasut <marek.vasut@gmail.com> | 2017-01-17 12:26:32 +0300 |
commit | cccbddc38c431a0afd7fd0b3e1d48e5326610084 (patch) | |
tree | 049bec6a869251df4873802faea3c8fbd08cf6a7 /drivers/usb/host/ehci-mx6.c | |
parent | 63d747477be2f6f948760f2dc9ce0f440c0af45c (diff) | |
download | u-boot-cccbddc38c431a0afd7fd0b3e1d48e5326610084.tar.xz |
usb: ehci-mx6: implement ofdata_to_platdata
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.fan@nxp.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'drivers/usb/host/ehci-mx6.c')
-rw-r--r-- | drivers/usb/host/ehci-mx6.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c index 48889c1956..18b7fc3c95 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"); + if (phy_off < 0) + return -EINVAL; + + addr = (void __iomem *)fdtdec_get_addr(blob, phy_off, + "reg"); + 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, |