arch/arm/mach-tegra/tegra124/xusb-padctl.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
  */

 #define pr_fmt(fmt) "tegra-xusb-padctl: " fmt

 #include <common.h>
 #include <errno.h>
 #include <log.h>
 #include <dm/of_access.h>
 #include <dm/ofnode.h>
 #include <linux/delay.h>

 #include "../xusb-padctl-common.h"

 #include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h>

 #define XUSB_PADCTL_ELPG_PROGRAM 0x01c
 #define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN (1 << 26)
 #define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 25)
 #define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN (1 << 24)

 #define XUSB_PADCTL_IOPHY_PLL_P0_CTL1 0x040
 #define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET (1 << 19)
 #define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK (0xf << 12)
 #define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST (1 << 1)

 #define XUSB_PADCTL_IOPHY_PLL_P0_CTL2 0x044
 #define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN (1 << 6)
 #define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN (1 << 5)
 #define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL (1 << 4)

 #define XUSB_PADCTL_IOPHY_PLL_S0_CTL1 0x138
 #define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET (1 << 27)
 #define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE (1 << 24)
 #define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD (1 << 3)
 #define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST (1 << 1)
 #define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ (1 << 0)

 #define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1 0x148
 #define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD (1 << 1)
 #define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ (1 << 0)

 enum tegra124_function {
 	TEGRA124_FUNC_SNPS,
 	TEGRA124_FUNC_XUSB,
 	TEGRA124_FUNC_UART,
 	TEGRA124_FUNC_PCIE,
 	TEGRA124_FUNC_USB3,
 	TEGRA124_FUNC_SATA,
 	TEGRA124_FUNC_RSVD,
 };

 static const char *const tegra124_functions[] = {
 	"snps",
 	"xusb",
 	"uart",
 	"pcie",
 	"usb3",
 	"sata",
 	"rsvd",
 };

 static const unsigned int tegra124_otg_functions[] = {
 	TEGRA124_FUNC_SNPS,
 	TEGRA124_FUNC_XUSB,
 	TEGRA124_FUNC_UART,
 	TEGRA124_FUNC_RSVD,
 };

 static const unsigned int tegra124_usb_functions[] = {
 	TEGRA124_FUNC_SNPS,
 	TEGRA124_FUNC_XUSB,
 };

 static const unsigned int tegra124_pci_functions[] = {
 	TEGRA124_FUNC_PCIE,
 	TEGRA124_FUNC_USB3,
 	TEGRA124_FUNC_SATA,
 	TEGRA124_FUNC_RSVD,
 };

 #define TEGRA124_LANE(_name, _offset, _shift, _mask, _iddq, _funcs)	\
 	{								\
 		.name = _name,						\
 		.offset = _offset,					\
 		.shift = _shift,					\
 		.mask = _mask,						\
 		.iddq = _iddq,						\
 		.num_funcs = ARRAY_SIZE(tegra124_##_funcs##_functions),	\
 		.funcs = tegra124_##_funcs##_functions,			\
 	}

 static const struct tegra_xusb_padctl_lane tegra124_lanes[] = {
 	TEGRA124_LANE("otg-0",  0x004,  0, 0x3, 0, otg),
 	TEGRA124_LANE("otg-1",  0x004,  2, 0x3, 0, otg),
 	TEGRA124_LANE("otg-2",  0x004,  4, 0x3, 0, otg),
 	TEGRA124_LANE("ulpi-0", 0x004, 12, 0x1, 0, usb),
 	TEGRA124_LANE("hsic-0", 0x004, 14, 0x1, 0, usb),
 	TEGRA124_LANE("hsic-1", 0x004, 15, 0x1, 0, usb),
 	TEGRA124_LANE("pcie-0", 0x134, 16, 0x3, 1, pci),
 	TEGRA124_LANE("pcie-1", 0x134, 18, 0x3, 2, pci),
 	TEGRA124_LANE("pcie-2", 0x134, 20, 0x3, 3, pci),
 	TEGRA124_LANE("pcie-3", 0x134, 22, 0x3, 4, pci),
 	TEGRA124_LANE("pcie-4", 0x134, 24, 0x3, 5, pci),
 	TEGRA124_LANE("sata-0", 0x134, 26, 0x3, 6, pci),
 };

 static int tegra_xusb_padctl_enable(struct tegra_xusb_padctl *padctl)
 {
 	u32 value;

 	if (padctl->enable++ > 0)
 		return 0;

 	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
 	value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
 	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

 	udelay(100);

 	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
 	value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
 	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

 	udelay(100);

 	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
 	value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
 	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

 	return 0;
 }

 static int tegra_xusb_padctl_disable(struct tegra_xusb_padctl *padctl)
 {
 	u32 value;

 	if (padctl->enable == 0) {
 		pr_err("unbalanced enable/disable");
 		return 0;
 	}

 	if (--padctl->enable > 0)
 		return 0;

 	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
 	value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
 	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

 	udelay(100);

 	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
 	value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
 	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

 	udelay(100);

 	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
 	value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
 	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

 	return 0;
 }

 static int phy_prepare(struct tegra_xusb_phy *phy)
 {
 	return tegra_xusb_padctl_enable(phy->padctl);
 }

 static int phy_unprepare(struct tegra_xusb_phy *phy)
 {
 	return tegra_xusb_padctl_disable(phy->padctl);
 }

 static int pcie_phy_enable(struct tegra_xusb_phy *phy)
 {
 	struct tegra_xusb_padctl *padctl = phy->padctl;
 	int err = -ETIMEDOUT;
 	unsigned long start;
 	u32 value;

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
 	value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);
 	value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN |
 		 XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN |
 		 XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
 	value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);

 	start = get_timer(0);

 	while (get_timer(start) < 50) {
 		value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
 		if (value & XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET) {
 			err = 0;
 			break;
 		}
 	}

 	return err;
 }

 static int pcie_phy_disable(struct tegra_xusb_phy *phy)
 {
 	struct tegra_xusb_padctl *padctl = phy->padctl;
 	u32 value;

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
 	value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);

 	return 0;
 }

 static int sata_phy_enable(struct tegra_xusb_phy *phy)
 {
 	struct tegra_xusb_padctl *padctl = phy->padctl;
 	int err = -ETIMEDOUT;
 	unsigned long start;
 	u32 value;

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
 	value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
 	value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
 	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
 	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
 	value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
 	value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

 	start = get_timer(0);

 	while (get_timer(start) < 50) {
 		value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
 		if (value & XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET) {
 			err = 0;
 			break;
 		}
 	}

 	return err;
 }

 static int sata_phy_disable(struct tegra_xusb_phy *phy)
 {
 	struct tegra_xusb_padctl *padctl = phy->padctl;
 	u32 value;

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
 	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
 	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
 	value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
 	value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

 	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
 	value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
 	value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
 	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);

 	return 0;
 }

 static const struct tegra_xusb_phy_ops pcie_phy_ops = {
 	.prepare = phy_prepare,
 	.enable = pcie_phy_enable,
 	.disable = pcie_phy_disable,
 	.unprepare = phy_unprepare,
 };

 static const struct tegra_xusb_phy_ops sata_phy_ops = {
 	.prepare = phy_prepare,
 	.enable = sata_phy_enable,
 	.disable = sata_phy_disable,
 	.unprepare = phy_unprepare,
 };

 static struct tegra_xusb_phy tegra124_phys[] = {
 	{
 		.type = TEGRA_XUSB_PADCTL_PCIE,
 		.ops = &pcie_phy_ops,
 		.padctl = &padctl,
 	},
 	{
 		.type = TEGRA_XUSB_PADCTL_SATA,
 		.ops = &sata_phy_ops,
 		.padctl = &padctl,
 	},
 };

 static const struct tegra_xusb_padctl_soc tegra124_socdata = {
 	.lanes = tegra124_lanes,
 	.num_lanes = ARRAY_SIZE(tegra124_lanes),
 	.functions = tegra124_functions,
 	.num_functions = ARRAY_SIZE(tegra124_functions),
 	.phys = tegra124_phys,
 	.num_phys = ARRAY_SIZE(tegra124_phys),
 };

 void tegra_xusb_padctl_init(void)
 {
 	ofnode nodes[1];
 	int count = 0;
 	int ret;

 	debug("%s: start\n", __func__);
 	if (of_live_active()) {
 		struct device_node *np = of_find_compatible_node(NULL, NULL,
 						"nvidia,tegra124-xusb-padctl");

 		debug("np=%p\n", np);
 		if (np) {
 			nodes[0] = np_to_ofnode(np);
 			count = 1;
 		}
 	} else {
 		int node_offsets[1];
 		int i;

 		count = fdtdec_find_aliases_for_id(gd->fdt_blob, "padctl",
 				COMPAT_NVIDIA_TEGRA124_XUSB_PADCTL,
 				node_offsets, ARRAY_SIZE(node_offsets));
 		for (i = 0; i < count; i++)
 			nodes[i] = offset_to_ofnode(node_offsets[i]);
 	}

 	ret = tegra_xusb_process_nodes(nodes, count, &tegra124_socdata);
 	debug("%s: done, ret=%d\n", __func__, ret);
 }
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved.
	*/

	#define pr_fmt(fmt) "tegra-xusb-padctl: " fmt

	#include <common.h>
	#include <errno.h>
	#include <log.h>
	#include <dm/of_access.h>
	#include <dm/ofnode.h>
	#include <linux/delay.h>

	#include "../xusb-padctl-common.h"

	#include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h>

	#define XUSB_PADCTL_ELPG_PROGRAM 0x01c
	#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN (1 << 26)
	#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 25)
	#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN (1 << 24)

	#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1 0x040
	#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET (1 << 19)
	#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK (0xf << 12)
	#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST (1 << 1)

	#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2 0x044
	#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN (1 << 6)
	#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN (1 << 5)
	#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL (1 << 4)

	#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1 0x138
	#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET (1 << 27)
	#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE (1 << 24)
	#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD (1 << 3)
	#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST (1 << 1)
	#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ (1 << 0)

	#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1 0x148
	#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD (1 << 1)
	#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ (1 << 0)

	enum tegra124_function {
	TEGRA124_FUNC_SNPS,
	TEGRA124_FUNC_XUSB,
	TEGRA124_FUNC_UART,
	TEGRA124_FUNC_PCIE,
	TEGRA124_FUNC_USB3,
	TEGRA124_FUNC_SATA,
	TEGRA124_FUNC_RSVD,
	};

	static const char *const tegra124_functions[] = {
	"snps",
	"xusb",
	"uart",
	"pcie",
	"usb3",
	"sata",
	"rsvd",
	};

	static const unsigned int tegra124_otg_functions[] = {
	TEGRA124_FUNC_SNPS,
	TEGRA124_FUNC_XUSB,
	TEGRA124_FUNC_UART,
	TEGRA124_FUNC_RSVD,
	};

	static const unsigned int tegra124_usb_functions[] = {
	TEGRA124_FUNC_SNPS,
	TEGRA124_FUNC_XUSB,
	};

	static const unsigned int tegra124_pci_functions[] = {
	TEGRA124_FUNC_PCIE,
	TEGRA124_FUNC_USB3,
	TEGRA124_FUNC_SATA,
	TEGRA124_FUNC_RSVD,
	};

	#define TEGRA124_LANE(_name, _offset, _shift, _mask, _iddq, _funcs) \
	{ \
	.name = _name, \
	.offset = _offset, \
	.shift = _shift, \
	.mask = _mask, \
	.iddq = _iddq, \
	.num_funcs = ARRAY_SIZE(tegra124_##_funcs##_functions), \
	.funcs = tegra124_##_funcs##_functions, \
	}

	static const struct tegra_xusb_padctl_lane tegra124_lanes[] = {
	TEGRA124_LANE("otg-0", 0x004, 0, 0x3, 0, otg),
	TEGRA124_LANE("otg-1", 0x004, 2, 0x3, 0, otg),
	TEGRA124_LANE("otg-2", 0x004, 4, 0x3, 0, otg),
	TEGRA124_LANE("ulpi-0", 0x004, 12, 0x1, 0, usb),
	TEGRA124_LANE("hsic-0", 0x004, 14, 0x1, 0, usb),
	TEGRA124_LANE("hsic-1", 0x004, 15, 0x1, 0, usb),
	TEGRA124_LANE("pcie-0", 0x134, 16, 0x3, 1, pci),
	TEGRA124_LANE("pcie-1", 0x134, 18, 0x3, 2, pci),
	TEGRA124_LANE("pcie-2", 0x134, 20, 0x3, 3, pci),
	TEGRA124_LANE("pcie-3", 0x134, 22, 0x3, 4, pci),
	TEGRA124_LANE("pcie-4", 0x134, 24, 0x3, 5, pci),
	TEGRA124_LANE("sata-0", 0x134, 26, 0x3, 6, pci),
	};

	static int tegra_xusb_padctl_enable(struct tegra_xusb_padctl *padctl)
	{
	u32 value;

	if (padctl->enable++ > 0)
	return 0;

	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
	value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

	udelay(100);

	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
	value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

	udelay(100);

	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
	value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

	return 0;
	}

	static int tegra_xusb_padctl_disable(struct tegra_xusb_padctl *padctl)
	{
	u32 value;

	if (padctl->enable == 0) {
	pr_err("unbalanced enable/disable");
	return 0;
	}

	if (--padctl->enable > 0)
	return 0;

	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
	value \|= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

	udelay(100);

	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
	value \|= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

	udelay(100);

	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
	value \|= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);

	return 0;
	}

	static int phy_prepare(struct tegra_xusb_phy *phy)
	{
	return tegra_xusb_padctl_enable(phy->padctl);
	}

	static int phy_unprepare(struct tegra_xusb_phy *phy)
	{
	return tegra_xusb_padctl_disable(phy->padctl);
	}

	static int pcie_phy_enable(struct tegra_xusb_phy *phy)
	{
	struct tegra_xusb_padctl *padctl = phy->padctl;
	int err = -ETIMEDOUT;
	unsigned long start;
	u32 value;

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
	value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);
	value \|= XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN \|
	XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN \|
	XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
	value \|= XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);

	start = get_timer(0);

	while (get_timer(start) < 50) {
	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
	if (value & XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET) {
	err = 0;
	break;
	}
	}

	return err;
	}

	static int pcie_phy_disable(struct tegra_xusb_phy *phy)
	{
	struct tegra_xusb_padctl *padctl = phy->padctl;
	u32 value;

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
	value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);

	return 0;
	}

	static int sata_phy_enable(struct tegra_xusb_phy *phy)
	{
	struct tegra_xusb_padctl *padctl = phy->padctl;
	int err = -ETIMEDOUT;
	unsigned long start;
	u32 value;

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
	value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
	value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
	value \|= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
	value \|= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

	start = get_timer(0);

	while (get_timer(start) < 50) {
	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
	if (value & XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET) {
	err = 0;
	break;
	}
	}

	return err;
	}

	static int sata_phy_disable(struct tegra_xusb_phy *phy)
	{
	struct tegra_xusb_padctl *padctl = phy->padctl;
	u32 value;

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
	value \|= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
	value \|= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);

	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
	value \|= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
	value \|= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);

	return 0;
	}

	static const struct tegra_xusb_phy_ops pcie_phy_ops = {
	.prepare = phy_prepare,
	.enable = pcie_phy_enable,
	.disable = pcie_phy_disable,
	.unprepare = phy_unprepare,
	};

	static const struct tegra_xusb_phy_ops sata_phy_ops = {
	.prepare = phy_prepare,
	.enable = sata_phy_enable,
	.disable = sata_phy_disable,
	.unprepare = phy_unprepare,
	};

	static struct tegra_xusb_phy tegra124_phys[] = {
	{
	.type = TEGRA_XUSB_PADCTL_PCIE,
	.ops = &pcie_phy_ops,
	.padctl = &padctl,
	},
	{
	.type = TEGRA_XUSB_PADCTL_SATA,
	.ops = &sata_phy_ops,
	.padctl = &padctl,
	},
	};

	static const struct tegra_xusb_padctl_soc tegra124_socdata = {
	.lanes = tegra124_lanes,
	.num_lanes = ARRAY_SIZE(tegra124_lanes),
	.functions = tegra124_functions,
	.num_functions = ARRAY_SIZE(tegra124_functions),
	.phys = tegra124_phys,
	.num_phys = ARRAY_SIZE(tegra124_phys),
	};

	void tegra_xusb_padctl_init(void)
	{
	ofnode nodes[1];
	int count = 0;
	int ret;

	debug("%s: start\n", __func__);
	if (of_live_active()) {
	struct device_node *np = of_find_compatible_node(NULL, NULL,
	"nvidia,tegra124-xusb-padctl");

	debug("np=%p\n", np);
	if (np) {
	nodes[0] = np_to_ofnode(np);
	count = 1;
	}
	} else {
	int node_offsets[1];
	int i;

	count = fdtdec_find_aliases_for_id(gd->fdt_blob, "padctl",
	COMPAT_NVIDIA_TEGRA124_XUSB_PADCTL,
	node_offsets, ARRAY_SIZE(node_offsets));
	for (i = 0; i < count; i++)
	nodes[i] = offset_to_ofnode(node_offsets[i]);
	}

	ret = tegra_xusb_process_nodes(nodes, count, &tegra124_socdata);
	debug("%s: done, ret=%d\n", __func__, ret);
	}