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@@ -15,10 +15,14 @@
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/clock.h>
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#include <asm/imx-common/iomux-v3.h>
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#include <asm/imx-common/sys_proto.h>
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#include <dm.h>
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#include <power/regulator.h>
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#include "ehci.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define USB_OTGREGS_OFFSET 0x000
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#define USB_H1REGS_OFFSET 0x200
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#define USB_H2REGS_OFFSET 0x400
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@@ -48,6 +52,7 @@
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#define ANADIG_USB2_PLL_480_CTRL_EN_USB_CLKS 0x00000040
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#define USBNC_OFFSET 0x200
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#define USBNC_PHY_STATUS_OFFSET 0x23C
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#define USBNC_PHYSTATUS_ID_DIG (1 << 4) /* otg_id status */
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#define USBNC_PHYCFG2_ACAENB (1 << 4) /* otg_id detection enable */
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#define UCTRL_PWR_POL (1 << 9) /* OTG Polarity of Power Pin */
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@@ -384,6 +389,7 @@ int ehci_hcd_stop(int index)
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struct ehci_mx6_priv_data {
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struct ehci_ctrl ctrl;
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struct usb_ehci *ehci;
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struct udevice *vbus_supply;
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enum usb_init_type init_type;
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int portnr;
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};
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@@ -399,7 +405,15 @@ static int mx6_init_after_reset(struct ehci_ctrl *dev)
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if (ret)
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return ret;
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board_ehci_power(priv->portnr, (type == USB_INIT_DEVICE) ? 0 : 1);
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if (priv->vbus_supply) {
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ret = regulator_set_enable(priv->vbus_supply,
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(type == USB_INIT_DEVICE) ?
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false : true);
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if (ret) {
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puts("Error enabling VBUS supply\n");
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return ret;
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}
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}
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if (type == USB_INIT_DEVICE)
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return 0;
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@@ -417,24 +431,108 @@ static const struct ehci_ops mx6_ehci_ops = {
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.init_after_reset = mx6_init_after_reset
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};
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static int ehci_usb_phy_mode(struct udevice *dev)
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{
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struct usb_platdata *plat = dev_get_platdata(dev);
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void *__iomem addr = (void *__iomem)dev_get_addr(dev);
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void *__iomem phy_ctrl, *__iomem phy_status;
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const void *blob = gd->fdt_blob;
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int offset = dev->of_offset, phy_off;
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u32 val;
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/*
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* About fsl,usbphy, Refer to
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* Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt.
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*/
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if (is_mx6()) {
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phy_off = fdtdec_lookup_phandle(blob,
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offset,
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"fsl,usbphy");
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if (phy_off < 0)
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return -EINVAL;
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addr = (void __iomem *)fdtdec_get_addr(blob, phy_off,
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"reg");
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if ((fdt_addr_t)addr == FDT_ADDR_T_NONE)
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return -EINVAL;
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phy_ctrl = (void __iomem *)(addr + USBPHY_CTRL);
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val = readl(phy_ctrl);
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if (val & USBPHY_CTRL_OTG_ID)
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plat->init_type = USB_INIT_DEVICE;
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else
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plat->init_type = USB_INIT_HOST;
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} else if (is_mx7()) {
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phy_status = (void __iomem *)(addr +
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USBNC_PHY_STATUS_OFFSET);
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val = readl(phy_status);
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if (val & USBNC_PHYSTATUS_ID_DIG)
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plat->init_type = USB_INIT_DEVICE;
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else
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plat->init_type = USB_INIT_HOST;
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} else {
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return -EINVAL;
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}
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return 0;
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}
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static int ehci_usb_ofdata_to_platdata(struct udevice *dev)
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{
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struct usb_platdata *plat = dev_get_platdata(dev);
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const char *mode;
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mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "dr_mode", NULL);
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if (mode) {
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if (strcmp(mode, "peripheral") == 0)
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plat->init_type = USB_INIT_DEVICE;
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else if (strcmp(mode, "host") == 0)
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plat->init_type = USB_INIT_HOST;
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else if (strcmp(mode, "otg") == 0)
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return ehci_usb_phy_mode(dev);
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else
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return -EINVAL;
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return 0;
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}
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return ehci_usb_phy_mode(dev);
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}
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static int ehci_usb_probe(struct udevice *dev)
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{
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struct usb_platdata *plat = dev_get_platdata(dev);
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struct usb_ehci *ehci = (struct usb_ehci *)dev_get_addr(dev);
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struct ehci_mx6_priv_data *priv = dev_get_priv(dev);
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enum usb_init_type type = plat->init_type;
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struct ehci_hccr *hccr;
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struct ehci_hcor *hcor;
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int ret;
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priv->ehci = ehci;
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priv->portnr = dev->seq;
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priv->init_type = plat->init_type;
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priv->init_type = type;
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ret = device_get_supply_regulator(dev, "vbus-supply",
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&priv->vbus_supply);
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if (ret)
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debug("%s: No vbus supply\n", dev->name);
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ret = ehci_mx6_common_init(ehci, priv->portnr);
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if (ret)
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return ret;
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board_ehci_power(priv->portnr, (priv->init_type == USB_INIT_DEVICE) ? 0 : 1);
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if (priv->vbus_supply) {
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ret = regulator_set_enable(priv->vbus_supply,
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(type == USB_INIT_DEVICE) ?
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false : true);
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if (ret) {
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puts("Error enabling VBUS supply\n");
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return ret;
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}
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}
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if (priv->init_type == USB_INIT_HOST) {
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setbits_le32(&ehci->usbmode, CM_HOST);
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@@ -460,6 +558,7 @@ U_BOOT_DRIVER(usb_mx6) = {
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.name = "ehci_mx6",
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.id = UCLASS_USB,
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.of_match = mx6_usb_ids,
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.ofdata_to_platdata = ehci_usb_ofdata_to_platdata,
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.probe = ehci_usb_probe,
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.remove = ehci_deregister,
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.ops = &ehci_usb_ops,
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