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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2018 Ramon Fried <ramon.fried@gmail.com>
- */
- #include <common.h>
- #include <dm.h>
- #include <generic-phy.h>
- #include <linux/bitops.h>
- #include <usb/ehci-ci.h>
- #include <usb/ulpi.h>
- #include <asm/io.h>
- /* PHY viewport regs */
- #define ULPI_MISC_A_READ 0x96
- #define ULPI_MISC_A_SET 0x97
- #define ULPI_MISC_A_CLEAR 0x98
- #define ULPI_MISC_A_VBUSVLDEXT BIT(0)
- #define ULPI_MISC_A_VBUSVLDEXTSEL BIT(1)
- #define GEN2_SESS_VLD_CTRL_EN BIT(7)
- #define SESS_VLD_CTRL BIT(25)
- struct msm_phy_priv {
- void __iomem *regs;
- struct usb_ehci *ehci; /* Start of IP core*/
- struct ulpi_viewport ulpi_vp; /* ULPI Viewport */
- };
- static int msm_phy_power_on(struct phy *phy)
- {
- struct msm_phy_priv *priv = dev_get_priv(phy->dev);
- /* Select and enable external configuration with USB PHY */
- ulpi_write(&priv->ulpi_vp, (u8 *)ULPI_MISC_A_SET,
- ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT);
- return 0;
- }
- static int msm_phy_power_off(struct phy *phy)
- {
- struct msm_phy_priv *priv = dev_get_priv(phy->dev);
- /* Disable VBUS mimicing in the controller. */
- ulpi_write(&priv->ulpi_vp, (u8 *)ULPI_MISC_A_CLEAR,
- ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT);
- return 0;
- }
- static int msm_phy_reset(struct phy *phy)
- {
- struct msm_phy_priv *p = dev_get_priv(phy->dev);
- /* select ULPI phy */
- writel(PORT_PTS_ULPI, &p->ehci->portsc);
- /* Enable sess_vld */
- setbits_le32(&p->ehci->genconfig2, GEN2_SESS_VLD_CTRL_EN);
- /* Enable external vbus configuration in the LINK */
- setbits_le32(&p->ehci->usbcmd, SESS_VLD_CTRL);
- /* USB_OTG_HS_AHB_BURST */
- writel(0x0, &p->ehci->sbuscfg);
- /* USB_OTG_HS_AHB_MODE: HPROT_MODE */
- /* Bus access related config. */
- writel(0x08, &p->ehci->sbusmode);
- return 0;
- }
- static int msm_phy_probe(struct udevice *dev)
- {
- struct msm_phy_priv *priv = dev_get_priv(dev);
- priv->regs = dev_remap_addr(dev);
- if (!priv->regs)
- return -EINVAL;
- priv->ehci = (struct usb_ehci *)priv->regs;
- priv->ulpi_vp.port_num = 0;
- /* Warning: this will not work if viewport address is > 64 bit due to
- * ULPI design.
- */
- priv->ulpi_vp.viewport_addr = (phys_addr_t)&priv->ehci->ulpi_viewpoint;
- return 0;
- }
- static struct phy_ops msm_phy_ops = {
- .power_on = msm_phy_power_on,
- .power_off = msm_phy_power_off,
- .reset = msm_phy_reset,
- };
- static const struct udevice_id msm_phy_ids[] = {
- { .compatible = "qcom,apq8016-usbphy" },
- { }
- };
- U_BOOT_DRIVER(msm8916_usbphy) = {
- .name = "msm8916_usbphy",
- .id = UCLASS_PHY,
- .of_match = msm_phy_ids,
- .ops = &msm_phy_ops,
- .probe = msm_phy_probe,
- .priv_auto_alloc_size = sizeof(struct msm_phy_priv),
- };
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