[people/ms/linux.git] / drivers / reset / reset-imx7.c

/*
 * Copyright (c) 2017, Impinj, Inc.
 *
 * i.MX7 System Reset Controller (SRC) driver
 *
 * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#include <linux/mfd/syscon.h>
#include <linux/mod_devicetable.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/reset-controller.h>
#include <linux/regmap.h>
#include <dt-bindings/reset/imx7-reset.h>
#include <dt-bindings/reset/imx8mq-reset.h>

struct imx7_src_signal {
	unsigned int offset, bit;
};

struct imx7_src_variant {
	const struct imx7_src_signal *signals;
	unsigned int signals_num;
	struct reset_control_ops ops;
};

struct imx7_src {
	struct reset_controller_dev rcdev;
	struct regmap *regmap;
	const struct imx7_src_signal *signals;
};

enum imx7_src_registers {
	SRC_A7RCR0		= 0x0004,
	SRC_M4RCR		= 0x000c,
	SRC_ERCR		= 0x0014,
	SRC_HSICPHY_RCR		= 0x001c,
	SRC_USBOPHY1_RCR	= 0x0020,
	SRC_USBOPHY2_RCR	= 0x0024,
	SRC_MIPIPHY_RCR		= 0x0028,
	SRC_PCIEPHY_RCR		= 0x002c,
	SRC_DDRC_RCR		= 0x1000,
};

static int imx7_reset_update(struct imx7_src *imx7src,
			     unsigned long id, unsigned int value)
{
	const struct imx7_src_signal *signal = &imx7src->signals[id];

	return regmap_update_bits(imx7src->regmap,
				  signal->offset, signal->bit, value);
}

static const struct imx7_src_signal imx7_src_signals[IMX7_RESET_NUM] = {
	[IMX7_RESET_A7_CORE_POR_RESET0] = { SRC_A7RCR0, BIT(0) },
	[IMX7_RESET_A7_CORE_POR_RESET1] = { SRC_A7RCR0, BIT(1) },
	[IMX7_RESET_A7_CORE_RESET0]     = { SRC_A7RCR0, BIT(4) },
	[IMX7_RESET_A7_CORE_RESET1]	= { SRC_A7RCR0, BIT(5) },
	[IMX7_RESET_A7_DBG_RESET0]	= { SRC_A7RCR0, BIT(8) },
	[IMX7_RESET_A7_DBG_RESET1]	= { SRC_A7RCR0, BIT(9) },
	[IMX7_RESET_A7_ETM_RESET0]	= { SRC_A7RCR0, BIT(12) },
	[IMX7_RESET_A7_ETM_RESET1]	= { SRC_A7RCR0, BIT(13) },
	[IMX7_RESET_A7_SOC_DBG_RESET]	= { SRC_A7RCR0, BIT(20) },
	[IMX7_RESET_A7_L2RESET]		= { SRC_A7RCR0, BIT(21) },
	[IMX7_RESET_SW_M4C_RST]		= { SRC_M4RCR, BIT(1) },
	[IMX7_RESET_SW_M4P_RST]		= { SRC_M4RCR, BIT(2) },
	[IMX7_RESET_EIM_RST]		= { SRC_ERCR, BIT(0) },
	[IMX7_RESET_HSICPHY_PORT_RST]	= { SRC_HSICPHY_RCR, BIT(1) },
	[IMX7_RESET_USBPHY1_POR]	= { SRC_USBOPHY1_RCR, BIT(0) },
	[IMX7_RESET_USBPHY1_PORT_RST]	= { SRC_USBOPHY1_RCR, BIT(1) },
	[IMX7_RESET_USBPHY2_POR]	= { SRC_USBOPHY2_RCR, BIT(0) },
	[IMX7_RESET_USBPHY2_PORT_RST]	= { SRC_USBOPHY2_RCR, BIT(1) },
	[IMX7_RESET_MIPI_PHY_MRST]	= { SRC_MIPIPHY_RCR, BIT(1) },
	[IMX7_RESET_MIPI_PHY_SRST]	= { SRC_MIPIPHY_RCR, BIT(2) },
	[IMX7_RESET_PCIEPHY]		= { SRC_PCIEPHY_RCR, BIT(2) | BIT(1) },
	[IMX7_RESET_PCIEPHY_PERST]	= { SRC_PCIEPHY_RCR, BIT(3) },
	[IMX7_RESET_PCIE_CTRL_APPS_EN]	= { SRC_PCIEPHY_RCR, BIT(6) },
	[IMX7_RESET_PCIE_CTRL_APPS_TURNOFF] = { SRC_PCIEPHY_RCR, BIT(11) },
	[IMX7_RESET_DDRC_PRST]		= { SRC_DDRC_RCR, BIT(0) },
	[IMX7_RESET_DDRC_CORE_RST]	= { SRC_DDRC_RCR, BIT(1) },
};

static struct imx7_src *to_imx7_src(struct reset_controller_dev *rcdev)
{
	return container_of(rcdev, struct imx7_src, rcdev);
}

static int imx7_reset_set(struct reset_controller_dev *rcdev,
			  unsigned long id, bool assert)
{
	struct imx7_src *imx7src = to_imx7_src(rcdev);
	const unsigned int bit = imx7src->signals[id].bit;
	unsigned int value = assert ? bit : 0;

	switch (id) {
	case IMX7_RESET_PCIEPHY:
		/*
		 * wait for more than 10us to release phy g_rst and
		 * btnrst
		 */
		if (!assert)
			udelay(10);
		break;

	case IMX7_RESET_PCIE_CTRL_APPS_EN:
		value = assert ? 0 : bit;
		break;
	}

	return imx7_reset_update(imx7src, id, value);
}

static int imx7_reset_assert(struct reset_controller_dev *rcdev,
			     unsigned long id)
{
	return imx7_reset_set(rcdev, id, true);
}

static int imx7_reset_deassert(struct reset_controller_dev *rcdev,
			       unsigned long id)
{
	return imx7_reset_set(rcdev, id, false);
}

static const struct imx7_src_variant variant_imx7 = {
	.signals = imx7_src_signals,
	.signals_num = ARRAY_SIZE(imx7_src_signals),
	.ops = {
		.assert   = imx7_reset_assert,
		.deassert = imx7_reset_deassert,
	},
};

enum imx8mq_src_registers {
	SRC_A53RCR0		= 0x0004,
	SRC_HDMI_RCR		= 0x0030,
	SRC_DISP_RCR		= 0x0034,
	SRC_GPU_RCR		= 0x0040,
	SRC_VPU_RCR		= 0x0044,
	SRC_PCIE2_RCR		= 0x0048,
	SRC_MIPIPHY1_RCR	= 0x004c,
	SRC_MIPIPHY2_RCR	= 0x0050,
	SRC_DDRC2_RCR		= 0x1004,
};

static const struct imx7_src_signal imx8mq_src_signals[IMX8MQ_RESET_NUM] = {
	[IMX8MQ_RESET_A53_CORE_POR_RESET0]	= { SRC_A53RCR0, BIT(0) },
	[IMX8MQ_RESET_A53_CORE_POR_RESET1]	= { SRC_A53RCR0, BIT(1) },
	[IMX8MQ_RESET_A53_CORE_POR_RESET2]	= { SRC_A53RCR0, BIT(2) },
	[IMX8MQ_RESET_A53_CORE_POR_RESET3]	= { SRC_A53RCR0, BIT(3) },
	[IMX8MQ_RESET_A53_CORE_RESET0]		= { SRC_A53RCR0, BIT(4) },
	[IMX8MQ_RESET_A53_CORE_RESET1]		= { SRC_A53RCR0, BIT(5) },
	[IMX8MQ_RESET_A53_CORE_RESET2]		= { SRC_A53RCR0, BIT(6) },
	[IMX8MQ_RESET_A53_CORE_RESET3]		= { SRC_A53RCR0, BIT(7) },
	[IMX8MQ_RESET_A53_DBG_RESET0]		= { SRC_A53RCR0, BIT(8) },
	[IMX8MQ_RESET_A53_DBG_RESET1]		= { SRC_A53RCR0, BIT(9) },
	[IMX8MQ_RESET_A53_DBG_RESET2]		= { SRC_A53RCR0, BIT(10) },
	[IMX8MQ_RESET_A53_DBG_RESET3]		= { SRC_A53RCR0, BIT(11) },
	[IMX8MQ_RESET_A53_ETM_RESET0]		= { SRC_A53RCR0, BIT(12) },
	[IMX8MQ_RESET_A53_ETM_RESET1]		= { SRC_A53RCR0, BIT(13) },
	[IMX8MQ_RESET_A53_ETM_RESET2]		= { SRC_A53RCR0, BIT(14) },
	[IMX8MQ_RESET_A53_ETM_RESET3]		= { SRC_A53RCR0, BIT(15) },
	[IMX8MQ_RESET_A53_SOC_DBG_RESET]	= { SRC_A53RCR0, BIT(20) },
	[IMX8MQ_RESET_A53_L2RESET]		= { SRC_A53RCR0, BIT(21) },
	[IMX8MQ_RESET_SW_NON_SCLR_M4C_RST]	= { SRC_M4RCR, BIT(0) },
	[IMX8MQ_RESET_OTG1_PHY_RESET]		= { SRC_USBOPHY1_RCR, BIT(0) },
	[IMX8MQ_RESET_OTG2_PHY_RESET]		= { SRC_USBOPHY2_RCR, BIT(0) },
	[IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N]	= { SRC_MIPIPHY_RCR, BIT(1) },
	[IMX8MQ_RESET_MIPI_DSI_RESET_N]		= { SRC_MIPIPHY_RCR, BIT(2) },
	[IMX8MQ_RESET_MIPI_DIS_DPI_RESET_N]	= { SRC_MIPIPHY_RCR, BIT(3) },
	[IMX8MQ_RESET_MIPI_DIS_ESC_RESET_N]	= { SRC_MIPIPHY_RCR, BIT(4) },
	[IMX8MQ_RESET_MIPI_DIS_PCLK_RESET_N]	= { SRC_MIPIPHY_RCR, BIT(5) },
	[IMX8MQ_RESET_PCIEPHY]			= { SRC_PCIEPHY_RCR,
						    BIT(2) | BIT(1) },
	[IMX8MQ_RESET_PCIEPHY_PERST]		= { SRC_PCIEPHY_RCR, BIT(3) },
	[IMX8MQ_RESET_PCIE_CTRL_APPS_EN]	= { SRC_PCIEPHY_RCR, BIT(6) },
	[IMX8MQ_RESET_PCIE_CTRL_APPS_TURNOFF]	= { SRC_PCIEPHY_RCR, BIT(11) },
	[IMX8MQ_RESET_HDMI_PHY_APB_RESET]	= { SRC_HDMI_RCR, BIT(0) },
	[IMX8MQ_RESET_DISP_RESET]		= { SRC_DISP_RCR, BIT(0) },
	[IMX8MQ_RESET_GPU_RESET]		= { SRC_GPU_RCR, BIT(0) },
	[IMX8MQ_RESET_VPU_RESET]		= { SRC_VPU_RCR, BIT(0) },
	[IMX8MQ_RESET_PCIEPHY2]			= { SRC_PCIE2_RCR,
						    BIT(2) | BIT(1) },
	[IMX8MQ_RESET_PCIEPHY2_PERST]		= { SRC_PCIE2_RCR, BIT(3) },
	[IMX8MQ_RESET_PCIE2_CTRL_APPS_EN]	= { SRC_PCIE2_RCR, BIT(6) },
	[IMX8MQ_RESET_PCIE2_CTRL_APPS_TURNOFF]	= { SRC_PCIE2_RCR, BIT(11) },
	[IMX8MQ_RESET_MIPI_CSI1_CORE_RESET]	= { SRC_MIPIPHY1_RCR, BIT(0) },
	[IMX8MQ_RESET_MIPI_CSI1_PHY_REF_RESET]	= { SRC_MIPIPHY1_RCR, BIT(1) },
	[IMX8MQ_RESET_MIPI_CSI1_ESC_RESET]	= { SRC_MIPIPHY1_RCR, BIT(2) },
	[IMX8MQ_RESET_MIPI_CSI2_CORE_RESET]	= { SRC_MIPIPHY2_RCR, BIT(0) },
	[IMX8MQ_RESET_MIPI_CSI2_PHY_REF_RESET]	= { SRC_MIPIPHY2_RCR, BIT(1) },
	[IMX8MQ_RESET_MIPI_CSI2_ESC_RESET]	= { SRC_MIPIPHY2_RCR, BIT(2) },
	[IMX8MQ_RESET_DDRC1_PRST]		= { SRC_DDRC_RCR, BIT(0) },
	[IMX8MQ_RESET_DDRC1_CORE_RESET]		= { SRC_DDRC_RCR, BIT(1) },
	[IMX8MQ_RESET_DDRC1_PHY_RESET]		= { SRC_DDRC_RCR, BIT(2) },
	[IMX8MQ_RESET_DDRC2_PHY_RESET]		= { SRC_DDRC2_RCR, BIT(0) },
	[IMX8MQ_RESET_DDRC2_CORE_RESET]		= { SRC_DDRC2_RCR, BIT(1) },
	[IMX8MQ_RESET_DDRC2_PRST]		= { SRC_DDRC2_RCR, BIT(2) },
};

static int imx8mq_reset_set(struct reset_controller_dev *rcdev,
			    unsigned long id, bool assert)
{
	struct imx7_src *imx7src = to_imx7_src(rcdev);
	const unsigned int bit = imx7src->signals[id].bit;
	unsigned int value = assert ? bit : 0;

	switch (id) {
	case IMX8MQ_RESET_PCIEPHY:
	case IMX8MQ_RESET_PCIEPHY2: /* fallthrough */
		/*
		 * wait for more than 10us to release phy g_rst and
		 * btnrst
		 */
		if (!assert)
			udelay(10);
		break;

	case IMX8MQ_RESET_PCIE_CTRL_APPS_EN:
	case IMX8MQ_RESET_PCIE2_CTRL_APPS_EN:	/* fallthrough */
	case IMX8MQ_RESET_MIPI_DIS_PCLK_RESET_N:	/* fallthrough */
	case IMX8MQ_RESET_MIPI_DIS_ESC_RESET_N:	/* fallthrough */
	case IMX8MQ_RESET_MIPI_DIS_DPI_RESET_N:	/* fallthrough */
	case IMX8MQ_RESET_MIPI_DSI_RESET_N:	/* fallthrough */
	case IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N:	/* fallthrough */
		value = assert ? 0 : bit;
		break;
	}

	return imx7_reset_update(imx7src, id, value);
}

static int imx8mq_reset_assert(struct reset_controller_dev *rcdev,
			       unsigned long id)
{
	return imx8mq_reset_set(rcdev, id, true);
}

static int imx8mq_reset_deassert(struct reset_controller_dev *rcdev,
				 unsigned long id)
{
	return imx8mq_reset_set(rcdev, id, false);
}

static const struct imx7_src_variant variant_imx8mq = {
	.signals = imx8mq_src_signals,
	.signals_num = ARRAY_SIZE(imx8mq_src_signals),
	.ops = {
		.assert   = imx8mq_reset_assert,
		.deassert = imx8mq_reset_deassert,
	},
};

static int imx7_reset_probe(struct platform_device *pdev)
{
	struct imx7_src *imx7src;
	struct device *dev = &pdev->dev;
	struct regmap_config config = { .name = "src" };
	const struct imx7_src_variant *variant = of_device_get_match_data(dev);

	imx7src = devm_kzalloc(dev, sizeof(*imx7src), GFP_KERNEL);
	if (!imx7src)
		return -ENOMEM;

	imx7src->signals = variant->signals;
	imx7src->regmap = syscon_node_to_regmap(dev->of_node);
	if (IS_ERR(imx7src->regmap)) {
		dev_err(dev, "Unable to get imx7-src regmap");
		return PTR_ERR(imx7src->regmap);
	}
	regmap_attach_dev(dev, imx7src->regmap, &config);

	imx7src->rcdev.owner     = THIS_MODULE;
	imx7src->rcdev.nr_resets = variant->signals_num;
	imx7src->rcdev.ops       = &variant->ops;
	imx7src->rcdev.of_node   = dev->of_node;

	return devm_reset_controller_register(dev, &imx7src->rcdev);
}

static const struct of_device_id imx7_reset_dt_ids[] = {
	{ .compatible = "fsl,imx7d-src", .data = &variant_imx7 },
	{ .compatible = "fsl,imx8mq-src", .data = &variant_imx8mq },
	{ /* sentinel */ },
};

static struct platform_driver imx7_reset_driver = {
	.probe	= imx7_reset_probe,
	.driver = {
		.name		= KBUILD_MODNAME,
		.of_match_table	= imx7_reset_dt_ids,
	},
};
builtin_platform_driver(imx7_reset_driver);
Commit	Line	Data
abf97755 AS	1	/*
	2	* Copyright (c) 2017, Impinj, Inc.
	3	*
	4	* i.MX7 System Reset Controller (SRC) driver
	5	*
	6	* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; version 2 of the License.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*/
	17
	18	#include <linux/mfd/syscon.h>
ac316725	19	#include <linux/mod_devicetable.h>
10590358	20	#include <linux/of_device.h>
abf97755 AS	21	#include <linux/platform_device.h>
	22	#include <linux/reset-controller.h>
	23	#include <linux/regmap.h>
	24	#include <dt-bindings/reset/imx7-reset.h>
c979dbf5	25	#include <dt-bindings/reset/imx8mq-reset.h>
abf97755	26
10590358 AS	27	struct imx7_src_signal {
	28	unsigned int offset, bit;
	29	};
	30
	31	struct imx7_src_variant {
	32	const struct imx7_src_signal *signals;
	33	unsigned int signals_num;
	34	struct reset_control_ops ops;
	35	};
	36
abf97755 AS	37	struct imx7_src {
	38	struct reset_controller_dev rcdev;
	39	struct regmap *regmap;
10590358	40	const struct imx7_src_signal *signals;
abf97755 AS	41	};
	42
	43	enum imx7_src_registers {
	44	SRC_A7RCR0 = 0x0004,
	45	SRC_M4RCR = 0x000c,
	46	SRC_ERCR = 0x0014,
	47	SRC_HSICPHY_RCR = 0x001c,
	48	SRC_USBOPHY1_RCR = 0x0020,
	49	SRC_USBOPHY2_RCR = 0x0024,
	50	SRC_MIPIPHY_RCR = 0x0028,
	51	SRC_PCIEPHY_RCR = 0x002c,
	52	SRC_DDRC_RCR = 0x1000,
	53	};
	54
10590358 AS	55	static int imx7_reset_update(struct imx7_src *imx7src,
	56	unsigned long id, unsigned int value)
	57	{
	58	const struct imx7_src_signal *signal = &imx7src->signals[id];
	59
	60	return regmap_update_bits(imx7src->regmap,
	61	signal->offset, signal->bit, value);
	62	}
abf97755 AS	63
	64	static const struct imx7_src_signal imx7_src_signals[IMX7_RESET_NUM] = {
	65	[IMX7_RESET_A7_CORE_POR_RESET0] = { SRC_A7RCR0, BIT(0) },
	66	[IMX7_RESET_A7_CORE_POR_RESET1] = { SRC_A7RCR0, BIT(1) },
	67	[IMX7_RESET_A7_CORE_RESET0] = { SRC_A7RCR0, BIT(4) },
	68	[IMX7_RESET_A7_CORE_RESET1] = { SRC_A7RCR0, BIT(5) },
	69	[IMX7_RESET_A7_DBG_RESET0] = { SRC_A7RCR0, BIT(8) },
	70	[IMX7_RESET_A7_DBG_RESET1] = { SRC_A7RCR0, BIT(9) },
	71	[IMX7_RESET_A7_ETM_RESET0] = { SRC_A7RCR0, BIT(12) },
	72	[IMX7_RESET_A7_ETM_RESET1] = { SRC_A7RCR0, BIT(13) },
	73	[IMX7_RESET_A7_SOC_DBG_RESET] = { SRC_A7RCR0, BIT(20) },
	74	[IMX7_RESET_A7_L2RESET] = { SRC_A7RCR0, BIT(21) },
	75	[IMX7_RESET_SW_M4C_RST] = { SRC_M4RCR, BIT(1) },
	76	[IMX7_RESET_SW_M4P_RST] = { SRC_M4RCR, BIT(2) },
	77	[IMX7_RESET_EIM_RST] = { SRC_ERCR, BIT(0) },
	78	[IMX7_RESET_HSICPHY_PORT_RST] = { SRC_HSICPHY_RCR, BIT(1) },
	79	[IMX7_RESET_USBPHY1_POR] = { SRC_USBOPHY1_RCR, BIT(0) },
	80	[IMX7_RESET_USBPHY1_PORT_RST] = { SRC_USBOPHY1_RCR, BIT(1) },
	81	[IMX7_RESET_USBPHY2_POR] = { SRC_USBOPHY2_RCR, BIT(0) },
	82	[IMX7_RESET_USBPHY2_PORT_RST] = { SRC_USBOPHY2_RCR, BIT(1) },
	83	[IMX7_RESET_MIPI_PHY_MRST] = { SRC_MIPIPHY_RCR, BIT(1) },
	84	[IMX7_RESET_MIPI_PHY_SRST] = { SRC_MIPIPHY_RCR, BIT(2) },
	85	[IMX7_RESET_PCIEPHY] = { SRC_PCIEPHY_RCR, BIT(2) \| BIT(1) },
	86	[IMX7_RESET_PCIEPHY_PERST] = { SRC_PCIEPHY_RCR, BIT(3) },
	87	[IMX7_RESET_PCIE_CTRL_APPS_EN] = { SRC_PCIEPHY_RCR, BIT(6) },
de248327	88	[IMX7_RESET_PCIE_CTRL_APPS_TURNOFF] = { SRC_PCIEPHY_RCR, BIT(11) },
abf97755 AS	89	[IMX7_RESET_DDRC_PRST] = { SRC_DDRC_RCR, BIT(0) },
	90	[IMX7_RESET_DDRC_CORE_RST] = { SRC_DDRC_RCR, BIT(1) },
	91	};
	92
	93	static struct imx7_src to_imx7_src(struct reset_controller_dev rcdev)
	94	{
	95	return container_of(rcdev, struct imx7_src, rcdev);
	96	}
	97
	98	static int imx7_reset_set(struct reset_controller_dev *rcdev,
	99	unsigned long id, bool assert)
	100	{
	101	struct imx7_src *imx7src = to_imx7_src(rcdev);
10590358 AS	102	const unsigned int bit = imx7src->signals[id].bit;
10590358 AS	103	unsigned int value = assert ? bit : 0;
abf97755 AS	104
	105	switch (id) {
	106	case IMX7_RESET_PCIEPHY:
	107	/*
	108	* wait for more than 10us to release phy g_rst and
	109	* btnrst
	110	*/
	111	if (!assert)
	112	udelay(10);
	113	break;
	114
	115	case IMX7_RESET_PCIE_CTRL_APPS_EN:
10590358	116	value = assert ? 0 : bit;
abf97755 AS	117	break;
	118	}
	119
10590358	120	return imx7_reset_update(imx7src, id, value);
abf97755 AS	121	}
	122
	123	static int imx7_reset_assert(struct reset_controller_dev *rcdev,
	124	unsigned long id)
	125	{
	126	return imx7_reset_set(rcdev, id, true);
	127	}
	128
	129	static int imx7_reset_deassert(struct reset_controller_dev *rcdev,
	130	unsigned long id)
	131	{
	132	return imx7_reset_set(rcdev, id, false);
	133	}
	134
10590358 AS	135	static const struct imx7_src_variant variant_imx7 = {
	136	.signals = imx7_src_signals,
	137	.signals_num = ARRAY_SIZE(imx7_src_signals),
	138	.ops = {
	139	.assert = imx7_reset_assert,
	140	.deassert = imx7_reset_deassert,
	141	},
abf97755 AS	142	};
abf97755 AS	143
c979dbf5 AS	144	enum imx8mq_src_registers {
	145	SRC_A53RCR0 = 0x0004,
	146	SRC_HDMI_RCR = 0x0030,
	147	SRC_DISP_RCR = 0x0034,
	148	SRC_GPU_RCR = 0x0040,
	149	SRC_VPU_RCR = 0x0044,
	150	SRC_PCIE2_RCR = 0x0048,
	151	SRC_MIPIPHY1_RCR = 0x004c,
	152	SRC_MIPIPHY2_RCR = 0x0050,
	153	SRC_DDRC2_RCR = 0x1004,
	154	};
	155
	156	static const struct imx7_src_signal imx8mq_src_signals[IMX8MQ_RESET_NUM] = {
	157	[IMX8MQ_RESET_A53_CORE_POR_RESET0] = { SRC_A53RCR0, BIT(0) },
	158	[IMX8MQ_RESET_A53_CORE_POR_RESET1] = { SRC_A53RCR0, BIT(1) },
	159	[IMX8MQ_RESET_A53_CORE_POR_RESET2] = { SRC_A53RCR0, BIT(2) },
	160	[IMX8MQ_RESET_A53_CORE_POR_RESET3] = { SRC_A53RCR0, BIT(3) },
	161	[IMX8MQ_RESET_A53_CORE_RESET0] = { SRC_A53RCR0, BIT(4) },
	162	[IMX8MQ_RESET_A53_CORE_RESET1] = { SRC_A53RCR0, BIT(5) },
	163	[IMX8MQ_RESET_A53_CORE_RESET2] = { SRC_A53RCR0, BIT(6) },
	164	[IMX8MQ_RESET_A53_CORE_RESET3] = { SRC_A53RCR0, BIT(7) },
	165	[IMX8MQ_RESET_A53_DBG_RESET0] = { SRC_A53RCR0, BIT(8) },
	166	[IMX8MQ_RESET_A53_DBG_RESET1] = { SRC_A53RCR0, BIT(9) },
	167	[IMX8MQ_RESET_A53_DBG_RESET2] = { SRC_A53RCR0, BIT(10) },
	168	[IMX8MQ_RESET_A53_DBG_RESET3] = { SRC_A53RCR0, BIT(11) },
	169	[IMX8MQ_RESET_A53_ETM_RESET0] = { SRC_A53RCR0, BIT(12) },
	170	[IMX8MQ_RESET_A53_ETM_RESET1] = { SRC_A53RCR0, BIT(13) },
	171	[IMX8MQ_RESET_A53_ETM_RESET2] = { SRC_A53RCR0, BIT(14) },
	172	[IMX8MQ_RESET_A53_ETM_RESET3] = { SRC_A53RCR0, BIT(15) },
	173	[IMX8MQ_RESET_A53_SOC_DBG_RESET] = { SRC_A53RCR0, BIT(20) },
	174	[IMX8MQ_RESET_A53_L2RESET] = { SRC_A53RCR0, BIT(21) },
	175	[IMX8MQ_RESET_SW_NON_SCLR_M4C_RST] = { SRC_M4RCR, BIT(0) },
	176	[IMX8MQ_RESET_OTG1_PHY_RESET] = { SRC_USBOPHY1_RCR, BIT(0) },
	177	[IMX8MQ_RESET_OTG2_PHY_RESET] = { SRC_USBOPHY2_RCR, BIT(0) },
	178	[IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N] = { SRC_MIPIPHY_RCR, BIT(1) },
	179	[IMX8MQ_RESET_MIPI_DSI_RESET_N] = { SRC_MIPIPHY_RCR, BIT(2) },
	180	[IMX8MQ_RESET_MIPI_DIS_DPI_RESET_N] = { SRC_MIPIPHY_RCR, BIT(3) },
	181	[IMX8MQ_RESET_MIPI_DIS_ESC_RESET_N] = { SRC_MIPIPHY_RCR, BIT(4) },
	182	[IMX8MQ_RESET_MIPI_DIS_PCLK_RESET_N] = { SRC_MIPIPHY_RCR, BIT(5) },
	183	[IMX8MQ_RESET_PCIEPHY] = { SRC_PCIEPHY_RCR,
	184	BIT(2) \| BIT(1) },
	185	[IMX8MQ_RESET_PCIEPHY_PERST] = { SRC_PCIEPHY_RCR, BIT(3) },
	186	[IMX8MQ_RESET_PCIE_CTRL_APPS_EN] = { SRC_PCIEPHY_RCR, BIT(6) },
	187	[IMX8MQ_RESET_PCIE_CTRL_APPS_TURNOFF] = { SRC_PCIEPHY_RCR, BIT(11) },
	188	[IMX8MQ_RESET_HDMI_PHY_APB_RESET] = { SRC_HDMI_RCR, BIT(0) },
	189	[IMX8MQ_RESET_DISP_RESET] = { SRC_DISP_RCR, BIT(0) },
	190	[IMX8MQ_RESET_GPU_RESET] = { SRC_GPU_RCR, BIT(0) },
	191	[IMX8MQ_RESET_VPU_RESET] = { SRC_VPU_RCR, BIT(0) },
	192	[IMX8MQ_RESET_PCIEPHY2] = { SRC_PCIE2_RCR,
	193	BIT(2) \| BIT(1) },
	194	[IMX8MQ_RESET_PCIEPHY2_PERST] = { SRC_PCIE2_RCR, BIT(3) },
	195	[IMX8MQ_RESET_PCIE2_CTRL_APPS_EN] = { SRC_PCIE2_RCR, BIT(6) },
	196	[IMX8MQ_RESET_PCIE2_CTRL_APPS_TURNOFF] = { SRC_PCIE2_RCR, BIT(11) },
	197	[IMX8MQ_RESET_MIPI_CSI1_CORE_RESET] = { SRC_MIPIPHY1_RCR, BIT(0) },
	198	[IMX8MQ_RESET_MIPI_CSI1_PHY_REF_RESET] = { SRC_MIPIPHY1_RCR, BIT(1) },
	199	[IMX8MQ_RESET_MIPI_CSI1_ESC_RESET] = { SRC_MIPIPHY1_RCR, BIT(2) },
	200	[IMX8MQ_RESET_MIPI_CSI2_CORE_RESET] = { SRC_MIPIPHY2_RCR, BIT(0) },
	201	[IMX8MQ_RESET_MIPI_CSI2_PHY_REF_RESET] = { SRC_MIPIPHY2_RCR, BIT(1) },
	202	[IMX8MQ_RESET_MIPI_CSI2_ESC_RESET] = { SRC_MIPIPHY2_RCR, BIT(2) },
	203	[IMX8MQ_RESET_DDRC1_PRST] = { SRC_DDRC_RCR, BIT(0) },
	204	[IMX8MQ_RESET_DDRC1_CORE_RESET] = { SRC_DDRC_RCR, BIT(1) },
	205	[IMX8MQ_RESET_DDRC1_PHY_RESET] = { SRC_DDRC_RCR, BIT(2) },
	206	[IMX8MQ_RESET_DDRC2_PHY_RESET] = { SRC_DDRC2_RCR, BIT(0) },
	207	[IMX8MQ_RESET_DDRC2_CORE_RESET] = { SRC_DDRC2_RCR, BIT(1) },
208	[IMX8MQ_RESET_DDRC2_PRST] = { SRC_DDRC2_RCR, BIT(2) },
209	};
210
211	static int imx8mq_reset_set(struct reset_controller_dev *rcdev,
212	unsigned long id, bool assert)
213	{
214	struct imx7_src *imx7src = to_imx7_src(rcdev);
215	const unsigned int bit = imx7src->signals[id].bit;
216	unsigned int value = assert ? bit : 0;
217
218	switch (id) {
219	case IMX8MQ_RESET_PCIEPHY:
220	case IMX8MQ_RESET_PCIEPHY2: /* fallthrough */
221	/*
222	* wait for more than 10us to release phy g_rst and
223	* btnrst
224	*/
225	if (!assert)
226	udelay(10);
227	break;
228
229	case IMX8MQ_RESET_PCIE_CTRL_APPS_EN:
230	case IMX8MQ_RESET_PCIE2_CTRL_APPS_EN: /* fallthrough */
231	case IMX8MQ_RESET_MIPI_DIS_PCLK_RESET_N: /* fallthrough */
232	case IMX8MQ_RESET_MIPI_DIS_ESC_RESET_N: /* fallthrough */
233	case IMX8MQ_RESET_MIPI_DIS_DPI_RESET_N: /* fallthrough */
234	case IMX8MQ_RESET_MIPI_DSI_RESET_N: /* fallthrough */
235	case IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N: /* fallthrough */
236	value = assert ? 0 : bit;
237	break;
238	}
239
240	return imx7_reset_update(imx7src, id, value);
241	}
242
243	static int imx8mq_reset_assert(struct reset_controller_dev *rcdev,
244	unsigned long id)
245	{
246	return imx8mq_reset_set(rcdev, id, true);
247	}
248
249	static int imx8mq_reset_deassert(struct reset_controller_dev *rcdev,
250	unsigned long id)
251	{
252	return imx8mq_reset_set(rcdev, id, false);
253	}
254
255	static const struct imx7_src_variant variant_imx8mq = {
256	.signals = imx8mq_src_signals,
257	.signals_num = ARRAY_SIZE(imx8mq_src_signals),
258	.ops = {
259	.assert = imx8mq_reset_assert,
260	.deassert = imx8mq_reset_deassert,
261	},
262	};
263
abf97755 AS	264	static int imx7_reset_probe(struct platform_device *pdev)
	265	{
	266	struct imx7_src *imx7src;
	267	struct device *dev = &pdev->dev;
	268	struct regmap_config config = { .name = "src" };
10590358	269	const struct imx7_src_variant *variant = of_device_get_match_data(dev);
abf97755 AS	270
	271	imx7src = devm_kzalloc(dev, sizeof(*imx7src), GFP_KERNEL);
	272	if (!imx7src)
	273	return -ENOMEM;
	274
10590358	275	imx7src->signals = variant->signals;
abf97755 AS	276	imx7src->regmap = syscon_node_to_regmap(dev->of_node);
	277	if (IS_ERR(imx7src->regmap)) {
	278	dev_err(dev, "Unable to get imx7-src regmap");
	279	return PTR_ERR(imx7src->regmap);
	280	}
	281	regmap_attach_dev(dev, imx7src->regmap, &config);
	282
	283	imx7src->rcdev.owner = THIS_MODULE;
10590358 AS	284	imx7src->rcdev.nr_resets = variant->signals_num;
10590358 AS	285	imx7src->rcdev.ops = &variant->ops;
abf97755 AS	286	imx7src->rcdev.of_node = dev->of_node;
	287
	288	return devm_reset_controller_register(dev, &imx7src->rcdev);
	289	}
	290
	291	static const struct of_device_id imx7_reset_dt_ids[] = {
10590358	292	{ .compatible = "fsl,imx7d-src", .data = &variant_imx7 },
c979dbf5	293	{ .compatible = "fsl,imx8mq-src", .data = &variant_imx8mq },
abf97755 AS	294	{ /* sentinel */ },
	295	};
	296
	297	static struct platform_driver imx7_reset_driver = {
	298	.probe = imx7_reset_probe,
	299	.driver = {
	300	.name = KBUILD_MODNAME,
	301	.of_match_table = imx7_reset_dt_ids,
	302	},
	303	};
	304	builtin_platform_driver(imx7_reset_driver);