mirror of
https://xff.cz/git/u-boot/
synced 2025-10-31 18:35:42 +01:00
03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2018 Ramon Fried <ramon.fried@gmail.com>
|
|
*/
|
|
|
|
#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_get_parent(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,usb-hs-phy-msm8916" },
|
|
{ }
|
|
};
|
|
|
|
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 = sizeof(struct msm_phy_priv),
|
|
};
|