1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
- *
- * Derived from linux/arch/mips/bcm63xx/usb-common.c:
- * Copyright 2008 Maxime Bizon <mbizon@freebox.fr>
- * Copyright 2013 Florian Fainelli <florian@openwrt.org>
- */
- #include <common.h>
- #include <dm.h>
- #include <generic-phy.h>
- #include <log.h>
- #include <malloc.h>
- #include <reset.h>
- #include <asm/io.h>
- #include <dm/device.h>
- #include <linux/bitops.h>
- /* USBH Swap Control register */
- #define USBH_SWAP_REG 0x00
- #define USBH_SWAP_OHCI_DATA BIT(0)
- #define USBH_SWAP_OHCI_ENDIAN BIT(1)
- #define USBH_SWAP_EHCI_DATA BIT(3)
- #define USBH_SWAP_EHCI_ENDIAN BIT(4)
- /* USBH Test register */
- #define USBH_TEST_REG 0x24
- #define USBH_TEST_PORT_CTL 0x1c0020
- struct bcm6358_usbh_priv {
- void __iomem *regs;
- };
- static int bcm6358_usbh_init(struct phy *phy)
- {
- struct bcm6358_usbh_priv *priv = dev_get_priv(phy->dev);
- /* configure to work in native cpu endian */
- clrsetbits_be32(priv->regs + USBH_SWAP_REG,
- USBH_SWAP_EHCI_ENDIAN | USBH_SWAP_OHCI_ENDIAN,
- USBH_SWAP_EHCI_DATA | USBH_SWAP_OHCI_DATA);
- /* test port control */
- writel_be(USBH_TEST_PORT_CTL, priv->regs + USBH_TEST_REG);
- return 0;
- }
- static struct phy_ops bcm6358_usbh_ops = {
- .init = bcm6358_usbh_init,
- };
- static const struct udevice_id bcm6358_usbh_ids[] = {
- { .compatible = "brcm,bcm6358-usbh" },
- { /* sentinel */ }
- };
- static int bcm6358_usbh_probe(struct udevice *dev)
- {
- struct bcm6358_usbh_priv *priv = dev_get_priv(dev);
- struct reset_ctl rst_ctl;
- int ret;
- priv->regs = dev_remap_addr(dev);
- if (!priv->regs)
- return -EINVAL;
- /* perform reset */
- ret = reset_get_by_index(dev, 0, &rst_ctl);
- if (ret < 0)
- return ret;
- ret = reset_deassert(&rst_ctl);
- if (ret < 0)
- return ret;
- ret = reset_free(&rst_ctl);
- if (ret < 0)
- return ret;
- return 0;
- }
- U_BOOT_DRIVER(bcm6358_usbh) = {
- .name = "bcm6358-usbh",
- .id = UCLASS_PHY,
- .of_match = bcm6358_usbh_ids,
- .ops = &bcm6358_usbh_ops,
- .priv_auto = sizeof(struct bcm6358_usbh_priv),
- .probe = bcm6358_usbh_probe,
- };
|