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