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89 lines
1.7 KiB
89 lines
1.7 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (C) 2018 Álvaro Fernández Rojas <[email protected]> |
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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 <[email protected]> |
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* Copyright 2013 Florian Fainelli <[email protected]> |
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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 <reset.h> |
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#include <asm/io.h> |
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#include <dm/device.h> |
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#define USBH_SETUP_PORT1_EN BIT(0) |
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struct bcm6348_usbh_priv { |
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void __iomem *regs; |
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}; |
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static int bcm6348_usbh_init(struct phy *phy) |
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{ |
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struct bcm6348_usbh_priv *priv = dev_get_priv(phy->dev); |
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writel_be(USBH_SETUP_PORT1_EN, priv->regs); |
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return 0; |
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} |
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static struct phy_ops bcm6348_usbh_ops = { |
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.init = bcm6348_usbh_init, |
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}; |
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static const struct udevice_id bcm6348_usbh_ids[] = { |
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{ .compatible = "brcm,bcm6348-usbh" }, |
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{ /* sentinel */ } |
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}; |
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static int bcm6348_usbh_probe(struct udevice *dev) |
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{ |
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struct bcm6348_usbh_priv *priv = dev_get_priv(dev); |
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struct reset_ctl rst_ctl; |
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struct clk clk; |
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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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/* 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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/* 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(bcm6348_usbh) = { |
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.name = "bcm6348-usbh", |
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.id = UCLASS_PHY, |
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.of_match = bcm6348_usbh_ids, |
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.ops = &bcm6348_usbh_ops, |
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.priv_auto_alloc_size = sizeof(struct bcm6348_usbh_priv), |
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.probe = bcm6348_usbh_probe, |
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};
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