83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
144 lines
3.1 KiB
C
144 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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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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#include <common.h>
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#include <clk.h>
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#include <dm.h>
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#include <generic-phy.h>
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#include <power-domain.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 Setup register */
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#define USBH_SETUP_REG 0x00
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#define USBH_SETUP_IOC BIT(4)
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/* USBH PLL Control register */
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#define USBH_PLL_REG 0x04
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#define USBH_PLL_SUSP_EN BIT(27)
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#define USBH_PLL_IDDQ_PWRDN BIT(31)
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/* USBH Swap Control register */
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#define USBH_SWAP_REG 0x0c
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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 Sim Control register */
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#define USBH_SIM_REG 0x20
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#define USBH_SIM_LADDR BIT(5)
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struct bcm6318_usbh_priv {
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void __iomem *regs;
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};
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static int bcm6318_usbh_init(struct phy *phy)
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{
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struct bcm6318_usbh_priv *priv = dev_get_priv(phy->dev);
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/* enable pll control susp */
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setbits_be32(priv->regs + USBH_PLL_REG, USBH_PLL_SUSP_EN);
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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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/* setup config */
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setbits_be32(priv->regs + USBH_SETUP_REG, USBH_SETUP_IOC);
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/* disable pll control pwrdn */
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clrbits_be32(priv->regs + USBH_PLL_REG, USBH_PLL_IDDQ_PWRDN);
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/* sim control config */
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setbits_be32(priv->regs + USBH_SIM_REG, USBH_SIM_LADDR);
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return 0;
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}
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static struct phy_ops bcm6318_usbh_ops = {
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.init = bcm6318_usbh_init,
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};
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static const struct udevice_id bcm6318_usbh_ids[] = {
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{ .compatible = "brcm,bcm6318-usbh" },
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{ /* sentinel */ }
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};
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static int bcm6318_usbh_probe(struct udevice *dev)
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{
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struct bcm6318_usbh_priv *priv = dev_get_priv(dev);
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struct power_domain pwr_dom;
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struct reset_ctl rst_ctl;
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struct clk clk;
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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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/* enable usbh clock */
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ret = clk_get_by_name(dev, "usbh", &clk);
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if (ret < 0)
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return ret;
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ret = clk_enable(&clk);
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if (ret < 0)
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return ret;
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ret = clk_free(&clk);
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if (ret < 0)
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return ret;
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/* enable power domain */
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ret = power_domain_get(dev, &pwr_dom);
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if (ret < 0)
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return ret;
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ret = power_domain_on(&pwr_dom);
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if (ret < 0)
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return ret;
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ret = power_domain_free(&pwr_dom);
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if (ret < 0)
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return ret;
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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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mdelay(100);
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return 0;
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}
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U_BOOT_DRIVER(bcm6318_usbh) = {
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.name = "bcm6318-usbh",
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.id = UCLASS_PHY,
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.of_match = bcm6318_usbh_ids,
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.ops = &bcm6318_usbh_ops,
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.priv_auto_alloc_size = sizeof(struct bcm6318_usbh_priv),
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.probe = bcm6318_usbh_probe,
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};
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