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https://github.com/AsahiLinux/u-boot
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60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* phy_uniphier_pcie.c - Socionext UniPhier PCIe PHY driver
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* Copyright 2019-2021 Socionext, Inc.
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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 <linux/bitops.h>
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#include <linux/compat.h>
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#include <regmap.h>
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#include <syscon.h>
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/* SG */
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#define SG_USBPCIESEL 0x590
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#define SG_USBPCIESEL_PCIE BIT(0)
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struct uniphier_pciephy_priv {
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int dummy;
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};
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static int uniphier_pciephy_init(struct phy *phy)
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{
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return 0;
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}
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static int uniphier_pciephy_probe(struct udevice *dev)
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{
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struct regmap *regmap;
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regmap = syscon_regmap_lookup_by_phandle(dev,
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"socionext,syscon");
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if (!IS_ERR(regmap))
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regmap_update_bits(regmap, SG_USBPCIESEL,
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SG_USBPCIESEL_PCIE, SG_USBPCIESEL_PCIE);
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return 0;
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}
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static struct phy_ops uniphier_pciephy_ops = {
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.init = uniphier_pciephy_init,
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};
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static const struct udevice_id uniphier_pciephy_ids[] = {
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{ .compatible = "socionext,uniphier-pro5-pcie-phy" },
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{ .compatible = "socionext,uniphier-ld20-pcie-phy" },
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{ .compatible = "socionext,uniphier-pxs3-pcie-phy" },
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{ }
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};
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U_BOOT_DRIVER(uniphier_pcie_phy) = {
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.name = "uniphier-pcie-phy",
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.id = UCLASS_PHY,
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.of_match = uniphier_pciephy_ids,
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.ops = &uniphier_pciephy_ops,
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.probe = uniphier_pciephy_probe,
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.priv_auto = sizeof(struct uniphier_pciephy_priv),
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};
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