From b0415d826fce8e04d0c2f09876a479301ccb6405 Mon Sep 17 00:00:00 2001 From: Kunihiko Hayashi Date: Tue, 6 Jul 2021 19:01:08 +0900 Subject: [PATCH] phy: socionext: Add UniPhier PCIe PHY driver Add PCIe PHY driver support for Pro5, LD20 and PXs3 SoCs. Signed-off-by: Kunihiko Hayashi --- drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/phy/socionext/Kconfig | 12 +++++ drivers/phy/socionext/Makefile | 6 +++ drivers/phy/socionext/phy-uniphier-pcie.c | 59 +++++++++++++++++++++++ 5 files changed, 80 insertions(+) create mode 100644 drivers/phy/socionext/Kconfig create mode 100644 drivers/phy/socionext/Makefile create mode 100644 drivers/phy/socionext/phy-uniphier-pcie.c diff --git a/drivers/Kconfig b/drivers/Kconfig index b1ada1cb7f..c9c812b752 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -80,6 +80,8 @@ source "drivers/phy/allwinner/Kconfig" source "drivers/phy/marvell/Kconfig" +source "drivers/phy/socionext/Kconfig" + source "drivers/pinctrl/Kconfig" source "drivers/power/Kconfig" diff --git a/drivers/Makefile b/drivers/Makefile index 3510daba29..4081289104 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -96,6 +96,7 @@ obj-$(CONFIG_PCH) += pch/ obj-y += phy/allwinner/ obj-y += phy/marvell/ obj-y += phy/rockchip/ +obj-y += phy/socionext/ obj-y += rtc/ obj-y += scsi/ obj-y += sound/ diff --git a/drivers/phy/socionext/Kconfig b/drivers/phy/socionext/Kconfig new file mode 100644 index 0000000000..bcd579e98e --- /dev/null +++ b/drivers/phy/socionext/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# PHY drivers for Socionext platforms. +# + +config PHY_UNIPHIER_PCIE + bool "UniPhier PCIe PHY driver" + depends on PHY && ARCH_UNIPHIER + imply REGMAP + help + Enable this to support PHY implemented in PCIe controller + on UniPhier SoCs. diff --git a/drivers/phy/socionext/Makefile b/drivers/phy/socionext/Makefile new file mode 100644 index 0000000000..5484360b70 --- /dev/null +++ b/drivers/phy/socionext/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the phy drivers. +# + +obj-$(CONFIG_PHY_UNIPHIER_PCIE) += phy-uniphier-pcie.o diff --git a/drivers/phy/socionext/phy-uniphier-pcie.c b/drivers/phy/socionext/phy-uniphier-pcie.c new file mode 100644 index 0000000000..d352c4ca3a --- /dev/null +++ b/drivers/phy/socionext/phy-uniphier-pcie.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * phy_uniphier_pcie.c - Socionext UniPhier PCIe PHY driver + * Copyright 2019-2021 Socionext, Inc. + */ + +#include +#include +#include +#include +#include +#include +#include + +/* 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), +};