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/*
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* Copyright (C) 2018 Ãlvaro 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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* SPDX-License-Identifier: GPL-2.0+ |
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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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fdt_addr_t addr; |
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fdt_size_t size; |
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int ret; |
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addr = devfdt_get_addr_size_index(dev, 0, &size); |
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if (addr == FDT_ADDR_T_NONE) |
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return -EINVAL; |
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priv->regs = ioremap(addr, size); |
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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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}; |