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drivers/phy/phy-rcar-gen3.c
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6cfc3d664 phy: rcar: Add R-... |
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// SPDX-License-Identifier: GPL-2.0 /* * Renesas RCar Gen3 USB PHY driver * * Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com> */ #include <common.h> #include <clk.h> #include <div64.h> #include <dm.h> #include <fdtdec.h> #include <generic-phy.h> |
336d4615f dm: core: Create ... |
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#include <malloc.h> |
6cfc3d664 phy: rcar: Add R-... |
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#include <reset.h> #include <syscon.h> #include <usb.h> #include <asm/io.h> #include <linux/bitops.h> #include <power/regulator.h> /* USB2.0 Host registers (original offset is +0x200) */ #define USB2_INT_ENABLE 0x000 #define USB2_USBCTR 0x00c #define USB2_SPD_RSM_TIMSET 0x10c #define USB2_OC_TIMSET 0x110 #define USB2_COMMCTRL 0x600 #define USB2_OBINTSTA 0x604 #define USB2_OBINTEN 0x608 #define USB2_VBCTRL 0x60c #define USB2_LINECTRL1 0x610 #define USB2_ADPCTRL 0x630 /* USBCTR */ #define USB2_USBCTR_PLL_RST BIT(1) /* SPD_RSM_TIMSET */ #define USB2_SPD_RSM_TIMSET_INIT 0x014e029b /* OC_TIMSET */ #define USB2_OC_TIMSET_INIT 0x000209ab /* COMMCTRL */ #define USB2_COMMCTRL_OTG_PERI BIT(31) /* 1 = Peripheral mode */ /* LINECTRL1 */ #define USB2_LINECTRL1_DP_RPD BIT(18) #define USB2_LINECTRL1_DM_RPD BIT(16) /* ADPCTRL */ #define USB2_ADPCTRL_DRVVBUS BIT(4) struct rcar_gen3_phy { fdt_addr_t regs; struct clk clk; struct udevice *vbus_supply; }; static int rcar_gen3_phy_phy_init(struct phy *phy) { struct rcar_gen3_phy *priv = dev_get_priv(phy->dev); /* Initialize USB2 part */ writel(0, priv->regs + USB2_INT_ENABLE); writel(USB2_SPD_RSM_TIMSET_INIT, priv->regs + USB2_SPD_RSM_TIMSET); writel(USB2_OC_TIMSET_INIT, priv->regs + USB2_OC_TIMSET); setbits_le32(priv->regs + USB2_LINECTRL1, USB2_LINECTRL1_DP_RPD | USB2_LINECTRL1_DM_RPD); clrbits_le32(priv->regs + USB2_COMMCTRL, USB2_COMMCTRL_OTG_PERI); setbits_le32(priv->regs + USB2_ADPCTRL, USB2_ADPCTRL_DRVVBUS); return 0; } static int rcar_gen3_phy_phy_power_on(struct phy *phy) { struct rcar_gen3_phy *priv = dev_get_priv(phy->dev); int ret; if (priv->vbus_supply) { ret = regulator_set_enable(priv->vbus_supply, true); if (ret) return ret; } setbits_le32(priv->regs + USB2_USBCTR, USB2_USBCTR_PLL_RST); clrbits_le32(priv->regs + USB2_USBCTR, USB2_USBCTR_PLL_RST); return 0; } static int rcar_gen3_phy_phy_power_off(struct phy *phy) { struct rcar_gen3_phy *priv = dev_get_priv(phy->dev); if (!priv->vbus_supply) return 0; return regulator_set_enable(priv->vbus_supply, false); } static const struct phy_ops rcar_gen3_phy_phy_ops = { .init = rcar_gen3_phy_phy_init, .power_on = rcar_gen3_phy_phy_power_on, .power_off = rcar_gen3_phy_phy_power_off, }; static int rcar_gen3_phy_probe(struct udevice *dev) { struct rcar_gen3_phy *priv = dev_get_priv(dev); int ret; priv->regs = dev_read_addr(dev); if (priv->regs == FDT_ADDR_T_NONE) return -EINVAL; ret = device_get_supply_regulator(dev, "vbus-supply", &priv->vbus_supply); if (ret && ret != -ENOENT) { pr_err("Failed to get PHY regulator "); return ret; } /* Enable clock */ ret = clk_get_by_index(dev, 0, &priv->clk); if (ret) return ret; ret = clk_enable(&priv->clk); if (ret) return ret; return 0; } static int rcar_gen3_phy_remove(struct udevice *dev) { struct rcar_gen3_phy *priv = dev_get_priv(dev); clk_disable(&priv->clk); clk_free(&priv->clk); return 0; } static const struct udevice_id rcar_gen3_phy_of_match[] = { { .compatible = "renesas,rcar-gen3-usb2-phy", }, { }, }; U_BOOT_DRIVER(rcar_gen3_phy) = { .name = "rcar-gen3-phy", .id = UCLASS_PHY, .of_match = rcar_gen3_phy_of_match, .ops = &rcar_gen3_phy_phy_ops, .probe = rcar_gen3_phy_probe, .remove = rcar_gen3_phy_remove, .priv_auto_alloc_size = sizeof(struct rcar_gen3_phy), }; |