Merge tag 'reset-for-5.1' of git://git.pengutronix.de/git/pza/linux into arm/drivers

Reset controller changes for v5.1

This adds the include/linux/reset directory to MAINTAINERS for reset
specific headers and adds headers for sunxi and socfpga in there to
get rid of a few extern function declarations.
There is a new reset driver for the Broadcom STB reset controller and
the i.MX7 system reset controller driver is extended to support i.MX8MQ
as well. Finally, there is a new header with reset id constants for
the Meson G12A SoC, which has a reset controller identical to Meson AXG
and thus can reuse its driver and DT bindings.

* tag 'reset-for-5.1' of git://git.pengutronix.de/git/pza/linux:
  dt-bindings: reset: meson: add g12a bindings
  reset: imx7: Add support for i.MX8MQ IP block variant
  reset: imx7: Add plubming to support multiple IP variants
  reset: Add Broadcom STB SW_INIT reset controller driver
  dt-bindings: reset: Add document for Broadcom STB reset controller
  reset: socfpga: declare socfpga_reset_init in a header file
  reset: sunxi: declare sun6i_reset_init in a header file
  MAINTAINERS: use include/linux/reset for reset controller related headers
  dt-bindings: reset: imx7: Document usage on i.MX8MQ SoCs

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

15 files changed, 550 insertions, 22 deletions

diff --git a/Documentation/devicetree/bindings/reset/brcm,brcmstb-reset.txt b/Documentation/devicetree/bindings/reset/brcm,brcmstb-reset.txt
new file mode 100644
index 000000000000..6e5341b4f891
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/brcm,brcmstb-reset.txt
@@ -0,0 +1,27 @@
+Broadcom STB SW_INIT-style reset controller
+===========================================
+
+Broadcom STB SoCs have a SW_INIT-style reset controller with separate
+SET/CLEAR/STATUS registers and possibly multiple banks, each of 32 bit
+reset lines.
+
+Please also refer to reset.txt in this directory for common reset
+controller binding usage.
+
+Required properties:
+- compatible: should be brcm,brcmstb-reset
+- reg: register base and length
+- #reset-cells: must be set to 1
+
+Example:
+
+	reset: reset-controller@8404318 {
+		compatible = "brcm,brcmstb-reset";
+		reg = <0x8404318 0x30>;
+		#reset-cells = <1>;
+	};
+
+	&ethernet_switch {
+		resets = <&reset>;
+		reset-names = "switch";
+	};
diff --git a/Documentation/devicetree/bindings/reset/fsl,imx7-src.txt b/Documentation/devicetree/bindings/reset/fsl,imx7-src.txt
index 1ab1d109318e..2ecf33815d18 100644
--- a/Documentation/devicetree/bindings/reset/fsl,imx7-src.txt
+++ b/Documentation/devicetree/bindings/reset/fsl,imx7-src.txt
@@ -5,7 +5,9 @@ Please also refer to reset.txt in this directory for common reset
 controller binding usage.
 
 Required properties:
-- compatible: Should be "fsl,imx7d-src", "syscon"
+- compatible:
+	- For i.MX7 SoCs should be "fsl,imx7d-src", "syscon"
+	- For i.MX8MQ SoCs should be "fsl,imx8mq-src", "syscon"
 - reg: should be register base and length as documented in the
   datasheet
 - interrupts: Should contain SRC interrupt
@@ -44,4 +46,5 @@ Example:
 
 
 For list of all valid reset indicies see
-<dt-bindings/reset/imx7-reset.h>
+<dt-bindings/reset/imx7-reset.h> for i.MX7 and
+<dt-bindings/reset/imx8mq-reset.h> for i.MX8MQ
diff --git a/MAINTAINERS b/MAINTAINERS
index 9f64f8d3740e..5ba2c18d4f5d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12958,6 +12958,7 @@ F:	drivers/reset/
 F:	Documentation/devicetree/bindings/reset/
 F:	include/dt-bindings/reset/
 F:	include/linux/reset.h
+F:	include/linux/reset/
 F:	include/linux/reset-controller.h
 
 RESTARTABLE SEQUENCES SUPPORT
diff --git a/arch/arm/mach-socfpga/socfpga.c b/arch/arm/mach-socfpga/socfpga.c
index afd98971d903..816da0eb6616 100644
--- a/arch/arm/mach-socfpga/socfpga.c
+++ b/arch/arm/mach-socfpga/socfpga.c
@@ -19,6 +19,7 @@
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/reboot.h>
+#include <linux/reset/socfpga.h>
 
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
@@ -32,8 +33,6 @@ void __iomem *rst_manager_base_addr;
 void __iomem *sdr_ctl_base_addr;
 unsigned long socfpga_cpu1start_addr;
 
-extern void __init socfpga_reset_init(void);
-
 static void __init socfpga_sysmgr_init(void)
 {
 	struct device_node *np;
diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
index 8a7f301839c2..933b6930f024 100644
--- a/arch/arm/mach-sunxi/sunxi.c
+++ b/arch/arm/mach-sunxi/sunxi.c
@@ -14,6 +14,7 @@
 #include <linux/clocksource.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/reset/sunxi.h>
 
 #include <asm/mach/arch.h>
 #include <asm/secure_cntvoff.h>
@@ -37,7 +38,6 @@ static const char * const sun6i_board_dt_compat[] = {
 	NULL,
 };
 
-extern void __init sun6i_reset_init(void);
 static void __init sun6i_timer_init(void)
 {
 	of_clk_init(NULL);
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 2e01bd833ffd..2c8c23db92fb 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -40,6 +40,14 @@ config RESET_BERLIN
 	help
 	  This enables the reset controller driver for Marvell Berlin SoCs.
 
+config RESET_BRCMSTB
+	tristate "Broadcom STB reset controller"
+	depends on ARCH_BRCMSTB || COMPILE_TEST
+	default ARCH_BRCMSTB
+	help
+	  This enables the reset controller driver for Broadcom STB SoCs using
+	  a SUN_TOP_CTRL_SW_INIT style controller.
+
 config RESET_HSDK
 	bool "Synopsys HSDK Reset Driver"
 	depends on HAS_IOMEM
@@ -48,9 +56,9 @@ config RESET_HSDK
 	  This enables the reset controller driver for HSDK board.
 
 config RESET_IMX7
-	bool "i.MX7 Reset Driver" if COMPILE_TEST
+	bool "i.MX7/8 Reset Driver" if COMPILE_TEST
 	depends on HAS_IOMEM
-	default SOC_IMX7D
+	default SOC_IMX7D || (ARM64 && ARCH_MXC)
 	select MFD_SYSCON
 	help
 	  This enables the reset controller driver for i.MX7 SoCs.
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index 573b8386d901..61456b8f659c 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
 obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
 obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
 obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
+obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
 obj-$(CONFIG_RESET_HSDK) += reset-hsdk.o
 obj-$(CONFIG_RESET_IMX7) += reset-imx7.o
 obj-$(CONFIG_RESET_LANTIQ) += reset-lantiq.o
diff --git a/drivers/reset/reset-brcmstb.c b/drivers/reset/reset-brcmstb.c
new file mode 100644
index 000000000000..a608f445dad6
--- /dev/null
+++ b/drivers/reset/reset-brcmstb.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Broadcom STB generic reset controller for SW_INIT style reset controller
+ *
+ * Author: Florian Fainelli <f.fainelli@gmail.com>
+ * Copyright (C) 2018 Broadcom
+ */
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/types.h>
+
+struct brcmstb_reset {
+	void __iomem *base;
+	struct reset_controller_dev rcdev;
+};
+
+#define SW_INIT_SET		0x00
+#define SW_INIT_CLEAR		0x04
+#define SW_INIT_STATUS		0x08
+
+#define SW_INIT_BIT(id)		BIT((id) & 0x1f)
+#define SW_INIT_BANK(id)	((id) >> 5)
+
+/* A full bank contains extra registers that we are not utilizing but still
+ * qualify as a single bank.
+ */
+#define SW_INIT_BANK_SIZE	0x18
+
+static inline
+struct brcmstb_reset *to_brcmstb(struct reset_controller_dev *rcdev)
+{
+	return container_of(rcdev, struct brcmstb_reset, rcdev);
+}
+
+static int brcmstb_reset_assert(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	unsigned int off = SW_INIT_BANK(id) * SW_INIT_BANK_SIZE;
+	struct brcmstb_reset *priv = to_brcmstb(rcdev);
+
+	writel_relaxed(SW_INIT_BIT(id), priv->base + off + SW_INIT_SET);
+
+	return 0;
+}
+
+static int brcmstb_reset_deassert(struct reset_controller_dev *rcdev,
+				  unsigned long id)
+{
+	unsigned int off = SW_INIT_BANK(id) * SW_INIT_BANK_SIZE;
+	struct brcmstb_reset *priv = to_brcmstb(rcdev);
+
+	writel_relaxed(SW_INIT_BIT(id), priv->base + off + SW_INIT_CLEAR);
+	/* Maximum reset delay after de-asserting a line and seeing block
+	 * operation is typically 14us for the worst case, build some slack
+	 * here.
+	 */
+	usleep_range(100, 200);
+
+	return 0;
+}
+
+static int brcmstb_reset_status(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	unsigned int off = SW_INIT_BANK(id) * SW_INIT_BANK_SIZE;
+	struct brcmstb_reset *priv = to_brcmstb(rcdev);
+
+	return readl_relaxed(priv->base + off + SW_INIT_STATUS) &
+			     SW_INIT_BIT(id);
+}
+
+static const struct reset_control_ops brcmstb_reset_ops = {
+	.assert	= brcmstb_reset_assert,
+	.deassert = brcmstb_reset_deassert,
+	.status = brcmstb_reset_status,
+};
+
+static int brcmstb_reset_probe(struct platform_device *pdev)
+{
+	struct device *kdev = &pdev->dev;
+	struct brcmstb_reset *priv;
+	struct resource *res;
+
+	priv = devm_kzalloc(kdev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!IS_ALIGNED(res->start, SW_INIT_BANK_SIZE) ||
+	    !IS_ALIGNED(resource_size(res), SW_INIT_BANK_SIZE)) {
+		dev_err(kdev, "incorrect register range\n");
+		return -EINVAL;
+	}
+
+	priv->base = devm_ioremap_resource(kdev, res);
+	if (IS_ERR(priv->base))
+		return PTR_ERR(priv->base);
+
+	dev_set_drvdata(kdev, priv);
+
+	priv->rcdev.owner = THIS_MODULE;
+	priv->rcdev.nr_resets = DIV_ROUND_DOWN_ULL(resource_size(res),
+						   SW_INIT_BANK_SIZE) * 32;
+	priv->rcdev.ops = &brcmstb_reset_ops;
+	priv->rcdev.of_node = kdev->of_node;
+	/* Use defaults: 1 cell and simple xlate function */
+
+	return devm_reset_controller_register(kdev, &priv->rcdev);
+}
+
+static const struct of_device_id brcmstb_reset_of_match[] = {
+	{ .compatible = "brcm,brcmstb-reset" },
+	{ /* sentinel */ }
+};
+
+static struct platform_driver brcmstb_reset_driver = {
+	.probe	= brcmstb_reset_probe,
+	.driver	= {
+		.name = "brcmstb-reset",
+		.of_match_table = brcmstb_reset_of_match,
+	},
+};
+module_platform_driver(brcmstb_reset_driver);
+
+MODULE_AUTHOR("Broadcom");
+MODULE_DESCRIPTION("Broadcom STB reset controller");
+MODULE_LICENSE("GPL");
diff --git a/drivers/reset/reset-imx7.c b/drivers/reset/reset-imx7.c
index 77911fa8f31d..aed76e33a0a9 100644
--- a/drivers/reset/reset-imx7.c
+++ b/drivers/reset/reset-imx7.c
@@ -17,14 +17,27 @@
 
 #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 {
@@ -39,9 +52,14 @@ enum imx7_src_registers {
 	SRC_DDRC_RCR		= 0x1000,
 };
 
-struct imx7_src_signal {
-	unsigned int offset, bit;
-};
+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) },
@@ -81,8 +99,8 @@ static int imx7_reset_set(struct reset_controller_dev *rcdev,
 			  unsigned long id, bool assert)
 {
 	struct imx7_src *imx7src = to_imx7_src(rcdev);
-	const struct imx7_src_signal *signal = &imx7_src_signals[id];
-	unsigned int value = assert ? signal->bit : 0;
+	const unsigned int bit = imx7src->signals[id].bit;
+	unsigned int value = assert ? bit : 0;
 
 	switch (id) {
 	case IMX7_RESET_PCIEPHY:
@@ -95,12 +113,11 @@ static int imx7_reset_set(struct reset_controller_dev *rcdev,
 		break;
 
 	case IMX7_RESET_PCIE_CTRL_APPS_EN:
-		value = (assert) ? 0 : signal->bit;
+		value = assert ? 0 : bit;
 		break;
 	}
 
-	return regmap_update_bits(imx7src->regmap,
-				  signal->offset, signal->bit, value);
+	return imx7_reset_update(imx7src, id, value);
 }
 
 static int imx7_reset_assert(struct reset_controller_dev *rcdev,
@@ -115,9 +132,133 @@ static int imx7_reset_deassert(struct reset_controller_dev *rcdev,
 	return imx7_reset_set(rcdev, id, false);
 }
 
-static const struct reset_control_ops imx7_reset_ops = {
-	.assert		= imx7_reset_assert,
-	.deassert	= imx7_reset_deassert,
+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)
@@ -125,11 +266,13 @@ 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");
@@ -138,15 +281,16 @@ static int imx7_reset_probe(struct platform_device *pdev)
 	regmap_attach_dev(dev, imx7src->regmap, &config);
 
 	imx7src->rcdev.owner     = THIS_MODULE;
-	imx7src->rcdev.nr_resets = IMX7_RESET_NUM;
-	imx7src->rcdev.ops       = &imx7_reset_ops;
+	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", },
+	{ .compatible = "fsl,imx7d-src", .data = &variant_imx7 },
+	{ .compatible = "fsl,imx8mq-src", .data = &variant_imx8mq },
 	{ /* sentinel */ },
 };
 
diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c
index 318cfc51c441..96953992c2bb 100644
--- a/drivers/reset/reset-socfpga.c
+++ b/drivers/reset/reset-socfpga.c
@@ -11,6 +11,7 @@
 #include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/reset-controller.h>
+#include <linux/reset/socfpga.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
@@ -18,7 +19,6 @@
 #include "reset-simple.h"
 
 #define SOCFPGA_NR_BANKS	8
-void __init socfpga_reset_init(void);
 
 static int a10_reset_init(struct device_node *np)
 {
diff --git a/drivers/reset/reset-sunxi.c b/drivers/reset/reset-sunxi.c
index db9a1a75523f..b06d724d8f21 100644
--- a/drivers/reset/reset-sunxi.c
+++ b/drivers/reset/reset-sunxi.c
@@ -18,6 +18,7 @@
 #include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/reset-controller.h>
+#include <linux/reset/sunxi.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
diff --git a/include/dt-bindings/reset/amlogic,meson-g12a-reset.h b/include/dt-bindings/reset/amlogic,meson-g12a-reset.h
new file mode 100644
index 000000000000..8063e8314eef
--- /dev/null
+++ b/include/dt-bindings/reset/amlogic,meson-g12a-reset.h
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
+/*
+ * Copyright (c) 2019 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ *
+ */
+
+#ifndef _DT_BINDINGS_AMLOGIC_MESON_G12A_RESET_H
+#define _DT_BINDINGS_AMLOGIC_MESON_G12A_RESET_H
+
+/*	RESET0					*/
+#define RESET_HIU			0
+/*					1	*/
+#define RESET_DOS			2
+/*					3-4	*/
+#define RESET_VIU			5
+#define RESET_AFIFO			6
+#define RESET_VID_PLL_DIV		7
+/*					8-9	*/
+#define RESET_VENC			10
+#define RESET_ASSIST			11
+#define RESET_PCIE_CTRL_A		12
+#define RESET_VCBUS			13
+#define RESET_PCIE_PHY			14
+#define RESET_PCIE_APB			15
+#define RESET_GIC			16
+#define RESET_CAPB3_DECODE		17
+/*					18	*/
+#define RESET_HDMITX_CAPB3		19
+#define RESET_DVALIN_CAPB3		20
+#define RESET_DOS_CAPB3			21
+/*					22	*/
+#define RESET_CBUS_CAPB3		23
+#define RESET_AHB_CNTL			24
+#define RESET_AHB_DATA			25
+#define RESET_VCBUS_CLK81		26
+/*					27-31	*/
+/*	RESET1					*/
+/*					32	*/
+#define RESET_DEMUX			33
+#define RESET_USB			34
+#define RESET_DDR			35
+/*					36	*/
+#define RESET_BT656			37
+#define RESET_AHB_SRAM			38
+/*					39	*/
+#define RESET_PARSER			40
+/*					41	*/
+#define RESET_ISA			42
+#define RESET_ETHERNET			43
+#define RESET_SD_EMMC_A			44
+#define RESET_SD_EMMC_B			45
+#define RESET_SD_EMMC_C			46
+/*					47-60 */
+#define RESET_AUDIO_CODEC		61
+/*					62-63	*/
+/*	RESET2					*/
+/*					64	*/
+#define RESET_AUDIO			65
+#define RESET_HDMITX_PHY		66
+/*					67	*/
+#define RESET_MIPI_DSI_HOST		68
+#define RESET_ALOCKER			69
+#define RESET_GE2D			70
+#define RESET_PARSER_REG		71
+#define RESET_PARSER_FETCH		72
+#define RESET_CTL			73
+#define RESET_PARSER_TOP		74
+/*					75-77	*/
+#define RESET_DVALIN			78
+#define RESET_HDMITX			79
+/*					80-95	*/
+/*	RESET3					*/
+/*					96-95	*/
+#define RESET_DEMUX_TOP			105
+#define RESET_DEMUX_DES_PL		106
+#define RESET_DEMUX_S2P_0		107
+#define RESET_DEMUX_S2P_1		108
+#define RESET_DEMUX_0			109
+#define RESET_DEMUX_1			110
+#define RESET_DEMUX_2			111
+/*					112-127	*/
+/*	RESET4					*/
+/*					128-129	*/
+#define RESET_MIPI_DSI_PHY		130
+/*					131-132	*/
+#define RESET_RDMA			133
+#define RESET_VENCI			134
+#define RESET_VENCP			135
+/*					136	*/
+#define RESET_VDAC			137
+/*					138-139 */
+#define RESET_VDI6			140
+#define RESET_VENCL			141
+#define RESET_I2C_M1			142
+#define RESET_I2C_M2			143
+/*					144-159	*/
+/*	RESET5					*/
+/*					160-191	*/
+/*	RESET6					*/
+#define RESET_GEN			192
+#define RESET_SPICC0			193
+#define RESET_SC			194
+#define RESET_SANA_3			195
+#define RESET_I2C_M0			196
+#define RESET_TS_PLL			197
+#define RESET_SPICC1			198
+#define RESET_STREAM			199
+#define RESET_TS_CPU			200
+#define RESET_UART0			201
+#define RESET_UART1_2			202
+#define RESET_ASYNC0			203
+#define RESET_ASYNC1			204
+#define RESET_SPIFC0			205
+#define RESET_I2C_M3			206
+/*					207-223	*/
+/*	RESET7					*/
+#define RESET_USB_DDR_0			224
+#define RESET_USB_DDR_1			225
+#define RESET_USB_DDR_2			226
+#define RESET_USB_DDR_3			227
+#define RESET_TS_GPU			228
+#define RESET_DEVICE_MMC_ARB		229
+#define RESET_DVALIN_DMC_PIPL		230
+#define RESET_VID_LOCK			231
+#define RESET_NIC_DMC_PIPL		232
+#define RESET_DMC_VPU_PIPL		233
+#define RESET_GE2D_DMC_PIPL		234
+#define RESET_HCODEC_DMC_PIPL		235
+#define RESET_WAVE420_DMC_PIPL		236
+#define RESET_HEVCF_DMC_PIPL		237
+/*					238-255	*/
+
+#endif
diff --git a/include/dt-bindings/reset/imx8mq-reset.h b/include/dt-bindings/reset/imx8mq-reset.h
new file mode 100644
index 000000000000..57c592498aa0
--- /dev/null
+++ b/include/dt-bindings/reset/imx8mq-reset.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 Zodiac Inflight Innovations
+ *
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ */
+
+#ifndef DT_BINDING_RESET_IMX8MQ_H
+#define DT_BINDING_RESET_IMX8MQ_H
+
+#define IMX8MQ_RESET_A53_CORE_POR_RESET0	0
+#define IMX8MQ_RESET_A53_CORE_POR_RESET1	1
+#define IMX8MQ_RESET_A53_CORE_POR_RESET2	2
+#define IMX8MQ_RESET_A53_CORE_POR_RESET3	3
+#define IMX8MQ_RESET_A53_CORE_RESET0		4
+#define IMX8MQ_RESET_A53_CORE_RESET1		5
+#define IMX8MQ_RESET_A53_CORE_RESET2		6
+#define IMX8MQ_RESET_A53_CORE_RESET3		7
+#define IMX8MQ_RESET_A53_DBG_RESET0		8
+#define IMX8MQ_RESET_A53_DBG_RESET1		9
+#define IMX8MQ_RESET_A53_DBG_RESET2		10
+#define IMX8MQ_RESET_A53_DBG_RESET3		11
+#define IMX8MQ_RESET_A53_ETM_RESET0		12
+#define IMX8MQ_RESET_A53_ETM_RESET1		13
+#define IMX8MQ_RESET_A53_ETM_RESET2		14
+#define IMX8MQ_RESET_A53_ETM_RESET3		15
+#define IMX8MQ_RESET_A53_SOC_DBG_RESET		16
+#define IMX8MQ_RESET_A53_L2RESET		17
+#define IMX8MQ_RESET_SW_NON_SCLR_M4C_RST	18
+#define IMX8MQ_RESET_OTG1_PHY_RESET		19
+#define IMX8MQ_RESET_OTG2_PHY_RESET		20
+#define IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N	21
+#define IMX8MQ_RESET_MIPI_DSI_RESET_N		22
+#define IMX8MQ_RESET_MIPI_DIS_DPI_RESET_N	23
+#define IMX8MQ_RESET_MIPI_DIS_ESC_RESET_N	24
+#define IMX8MQ_RESET_MIPI_DIS_PCLK_RESET_N	25
+#define IMX8MQ_RESET_PCIEPHY			26
+#define IMX8MQ_RESET_PCIEPHY_PERST		27
+#define IMX8MQ_RESET_PCIE_CTRL_APPS_EN		28
+#define IMX8MQ_RESET_PCIE_CTRL_APPS_TURNOFF	29
+#define IMX8MQ_RESET_HDMI_PHY_APB_RESET		30
+#define IMX8MQ_RESET_DISP_RESET			31
+#define IMX8MQ_RESET_GPU_RESET			32
+#define IMX8MQ_RESET_VPU_RESET			33
+#define IMX8MQ_RESET_PCIEPHY2			34
+#define IMX8MQ_RESET_PCIEPHY2_PERST		35
+#define IMX8MQ_RESET_PCIE2_CTRL_APPS_EN		36
+#define IMX8MQ_RESET_PCIE2_CTRL_APPS_TURNOFF	37
+#define IMX8MQ_RESET_MIPI_CSI1_CORE_RESET	38
+#define IMX8MQ_RESET_MIPI_CSI1_PHY_REF_RESET	39
+#define IMX8MQ_RESET_MIPI_CSI1_ESC_RESET	40
+#define IMX8MQ_RESET_MIPI_CSI2_CORE_RESET	41
+#define IMX8MQ_RESET_MIPI_CSI2_PHY_REF_RESET	42
+#define IMX8MQ_RESET_MIPI_CSI2_ESC_RESET	43
+#define IMX8MQ_RESET_DDRC1_PRST			44
+#define IMX8MQ_RESET_DDRC1_CORE_RESET		45
+#define IMX8MQ_RESET_DDRC1_PHY_RESET		46
+#define IMX8MQ_RESET_DDRC2_PRST			47
+#define IMX8MQ_RESET_DDRC2_CORE_RESET		48
+#define IMX8MQ_RESET_DDRC2_PHY_RESET		49
+
+#define IMX8MQ_RESET_NUM			50
+
+#endif
diff --git a/include/linux/reset/socfpga.h b/include/linux/reset/socfpga.h
new file mode 100644
index 000000000000..b11a2047c342
--- /dev/null
+++ b/include/linux/reset/socfpga.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_RESET_SOCFPGA_H__
+#define __LINUX_RESET_SOCFPGA_H__
+
+void __init socfpga_reset_init(void);
+
+#endif /* __LINUX_RESET_SOCFPGA_H__ */
diff --git a/include/linux/reset/sunxi.h b/include/linux/reset/sunxi.h
new file mode 100644
index 000000000000..1ad7fffb413e
--- /dev/null
+++ b/include/linux/reset/sunxi.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_RESET_SUNXI_H__
+#define __LINUX_RESET_SUNXI_H__
+
+void __init sun6i_reset_init(void);
+
+#endif /* __LINUX_RESET_SUNXI_H__ */