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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Ramon Fried <ramon.fried@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <generic-phy.h>
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#include <linux/bitops.h>
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#include <usb/ehci-ci.h>
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#include <usb/ulpi.h>
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#include <asm/io.h>
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/* PHY viewport regs */
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#define ULPI_MISC_A_READ 0x96
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#define ULPI_MISC_A_SET 0x97
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#define ULPI_MISC_A_CLEAR 0x98
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#define ULPI_MISC_A_VBUSVLDEXT BIT(0)
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#define ULPI_MISC_A_VBUSVLDEXTSEL BIT(1)
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#define GEN2_SESS_VLD_CTRL_EN BIT(7)
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#define SESS_VLD_CTRL BIT(25)
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struct msm_phy_priv {
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void __iomem *regs;
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struct usb_ehci *ehci; /* Start of IP core*/
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struct ulpi_viewport ulpi_vp; /* ULPI Viewport */
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};
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static int msm_phy_power_on(struct phy *phy)
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{
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struct msm_phy_priv *priv = dev_get_priv(phy->dev);
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/* Select and enable external configuration with USB PHY */
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ulpi_write(&priv->ulpi_vp, (u8 *)ULPI_MISC_A_SET,
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ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT);
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return 0;
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}
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static int msm_phy_power_off(struct phy *phy)
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{
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struct msm_phy_priv *priv = dev_get_priv(phy->dev);
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/* Disable VBUS mimicing in the controller. */
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ulpi_write(&priv->ulpi_vp, (u8 *)ULPI_MISC_A_CLEAR,
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ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT);
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return 0;
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}
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static int msm_phy_reset(struct phy *phy)
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{
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struct msm_phy_priv *p = dev_get_priv(phy->dev);
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/* select ULPI phy */
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writel(PORT_PTS_ULPI, &p->ehci->portsc);
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/* Enable sess_vld */
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setbits_le32(&p->ehci->genconfig2, GEN2_SESS_VLD_CTRL_EN);
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/* Enable external vbus configuration in the LINK */
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setbits_le32(&p->ehci->usbcmd, SESS_VLD_CTRL);
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/* USB_OTG_HS_AHB_BURST */
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writel(0x0, &p->ehci->sbuscfg);
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/* USB_OTG_HS_AHB_MODE: HPROT_MODE */
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/* Bus access related config. */
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writel(0x08, &p->ehci->sbusmode);
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return 0;
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}
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static int msm_phy_probe(struct udevice *dev)
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{
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struct msm_phy_priv *priv = dev_get_priv(dev);
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priv->regs = dev_remap_addr(dev_get_parent(dev));
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if (!priv->regs)
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return -EINVAL;
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priv->ehci = (struct usb_ehci *)priv->regs;
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priv->ulpi_vp.port_num = 0;
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/* Warning: this will not work if viewport address is > 64 bit due to
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* ULPI design.
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*/
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priv->ulpi_vp.viewport_addr = (phys_addr_t)&priv->ehci->ulpi_viewpoint;
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return 0;
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}
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static struct phy_ops msm_phy_ops = {
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.power_on = msm_phy_power_on,
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.power_off = msm_phy_power_off,
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.reset = msm_phy_reset,
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};
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static const struct udevice_id msm_phy_ids[] = {
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{ .compatible = "qcom,usb-hs-phy-msm8916" },
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{ }
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};
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U_BOOT_DRIVER(msm8916_usbphy) = {
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.name = "msm8916_usbphy",
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.id = UCLASS_PHY,
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.of_match = msm_phy_ids,
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.ops = &msm_phy_ops,
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.probe = msm_phy_probe,
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.priv_auto = sizeof(struct msm_phy_priv),
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};
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