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