From dec042028e8aff9a4f12d1b2ae48a373ab4c4ff9 Mon Sep 17 00:00:00 2001 From: Robert Marko Date: Thu, 10 Sep 2020 16:00:04 +0200 Subject: [PATCH] phy: add driver for Qualcomm IPQ40xx USB PHY Add a driver to setup the USB PHY-s on Qualcomm IPQ40xx series SoCs. The driver sets up HS and SS phys. Signed-off-by: Robert Marko Cc: Luka Perkov --- MAINTAINERS | 1 + drivers/phy/Kconfig | 6 ++ drivers/phy/Makefile | 1 + drivers/phy/phy-qcom-ipq4019-usb.c | 145 +++++++++++++++++++++++++++++ 4 files changed, 153 insertions(+) create mode 100644 drivers/phy/phy-qcom-ipq4019-usb.c diff --git a/MAINTAINERS b/MAINTAINERS index fcad3e45f3..1ba71093f7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -240,6 +240,7 @@ F: arch/arm/mach-ipq40xx/ F: include/dt-bindings/clock/qcom,ipq4019-gcc.h F: include/dt-bindings/reset/qcom,ipq4019-reset.h F: drivers/reset/reset-ipq4019.c +F: drivers/phy/phy-qcom-ipq4019-usb.c ARM MARVELL KIRKWOOD ARMADA-XP ARMADA-38X ARMADA-37XX ARMADA-7K/8K M: Stefan Roese diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 9c775107e9..8da00a259d 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -125,6 +125,12 @@ config STI_USB_PHY used by USB2 and USB3 Host controllers available on STiH407 SoC families. +config PHY_QCOM_IPQ4019_USB + tristate "Qualcomm IPQ4019 USB PHY driver" + depends on PHY && ARCH_IPQ40XX + help + Support for the USB PHY-s on Qualcomm IPQ40xx SoC-s. + config PHY_RCAR_GEN2 tristate "Renesas R-Car Gen2 USB PHY" depends on PHY && RCAR_GEN2 diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index 74e8d931d3..009f353baf 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_PHY_SANDBOX) += sandbox-phy.o obj-$(CONFIG_$(SPL_)PIPE3_PHY) += ti-pipe3-phy.o obj-$(CONFIG_AM654_PHY) += phy-ti-am654.o obj-$(CONFIG_STI_USB_PHY) += sti_usb_phy.o +obj-$(CONFIG_PHY_QCOM_IPQ4019_USB) += phy-qcom-ipq4019-usb.o obj-$(CONFIG_PHY_RCAR_GEN2) += phy-rcar-gen2.o obj-$(CONFIG_PHY_RCAR_GEN3) += phy-rcar-gen3.o obj-$(CONFIG_PHY_STM32_USBPHYC) += phy-stm32-usbphyc.o diff --git a/drivers/phy/phy-qcom-ipq4019-usb.c b/drivers/phy/phy-qcom-ipq4019-usb.c new file mode 100644 index 0000000000..465f0d3a01 --- /dev/null +++ b/drivers/phy/phy-qcom-ipq4019-usb.c @@ -0,0 +1,145 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019 Sartura Ltd. + * + * Author: Robert Marko + * + * Based on Linux driver + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +struct ipq4019_usb_phy { + phys_addr_t base; + struct reset_ctl por_rst; + struct reset_ctl srif_rst; +}; + +static int ipq4019_ss_phy_power_off(struct phy *_phy) +{ + struct ipq4019_usb_phy *phy = dev_get_priv(_phy->dev); + + reset_assert(&phy->por_rst); + mdelay(10); + + return 0; +} + +static int ipq4019_ss_phy_power_on(struct phy *_phy) +{ + struct ipq4019_usb_phy *phy = dev_get_priv(_phy->dev); + + ipq4019_ss_phy_power_off(_phy); + + reset_deassert(&phy->por_rst); + + return 0; +} + +static struct phy_ops ipq4019_usb_ss_phy_ops = { + .power_on = ipq4019_ss_phy_power_on, + .power_off = ipq4019_ss_phy_power_off, +}; + +static int ipq4019_usb_ss_phy_probe(struct udevice *dev) +{ + struct ipq4019_usb_phy *phy = dev_get_priv(dev); + int ret; + + phy->base = dev_read_addr(dev); + if (phy->base == FDT_ADDR_T_NONE) + return -EINVAL; + + ret = reset_get_by_name(dev, "por_rst", &phy->por_rst); + if (ret) + return ret; + + return 0; +} + +static const struct udevice_id ipq4019_usb_ss_phy_ids[] = { + { .compatible = "qcom,usb-ss-ipq4019-phy" }, + { } +}; + +U_BOOT_DRIVER(ipq4019_usb_ss_phy) = { + .name = "ipq4019-usb-ss-phy", + .id = UCLASS_PHY, + .of_match = ipq4019_usb_ss_phy_ids, + .ops = &ipq4019_usb_ss_phy_ops, + .probe = ipq4019_usb_ss_phy_probe, + .priv_auto_alloc_size = sizeof(struct ipq4019_usb_phy), +}; + +static int ipq4019_hs_phy_power_off(struct phy *_phy) +{ + struct ipq4019_usb_phy *phy = dev_get_priv(_phy->dev); + + reset_assert(&phy->por_rst); + mdelay(10); + + reset_assert(&phy->srif_rst); + mdelay(10); + + return 0; +} + +static int ipq4019_hs_phy_power_on(struct phy *_phy) +{ + struct ipq4019_usb_phy *phy = dev_get_priv(_phy->dev); + + ipq4019_hs_phy_power_off(_phy); + + reset_deassert(&phy->srif_rst); + mdelay(10); + + reset_deassert(&phy->por_rst); + + return 0; +} + +static struct phy_ops ipq4019_usb_hs_phy_ops = { + .power_on = ipq4019_hs_phy_power_on, + .power_off = ipq4019_hs_phy_power_off, +}; + +static int ipq4019_usb_hs_phy_probe(struct udevice *dev) +{ + struct ipq4019_usb_phy *phy = dev_get_priv(dev); + int ret; + + phy->base = dev_read_addr(dev); + if (phy->base == FDT_ADDR_T_NONE) + return -EINVAL; + + ret = reset_get_by_name(dev, "por_rst", &phy->por_rst); + if (ret) + return ret; + + ret = reset_get_by_name(dev, "srif_rst", &phy->srif_rst); + if (ret) + return ret; + + return 0; +} + +static const struct udevice_id ipq4019_usb_hs_phy_ids[] = { + { .compatible = "qcom,usb-hs-ipq4019-phy" }, + { } +}; + +U_BOOT_DRIVER(ipq4019_usb_hs_phy) = { + .name = "ipq4019-usb-hs-phy", + .id = UCLASS_PHY, + .of_match = ipq4019_usb_hs_phy_ids, + .ops = &ipq4019_usb_hs_phy_ops, + .probe = ipq4019_usb_hs_phy_probe, + .priv_auto_alloc_size = sizeof(struct ipq4019_usb_phy), +}; -- 2.39.5