[PATCH v3] ARM: dts: imx6qdl-gw: add Gateworks System Controller support

Tim Harvey tharvey at gateworks.com
Tue Jun 23 14:35:47 EDT 2020


Add Gateworks System Controller support to Gateworks Ventana boards:
- add dt bindings for GSC mfd driver and hwmon driver for ADC's and
  fan controllers.
- add dt bindings for gpio-keys driver for push-button and interrupt events

Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
v3:
 - change underscore to hyphen in node names
 - use generic node name for gsc_gpio nodes

v2:
 - use keycode bindings from linux-event-codes.h
 - fix gw5910 vdd_bat adc mode
 - fix gw5913 vdd_bat adc mode
---
 arch/arm/boot/dts/imx6qdl-gw51xx.dtsi | 153 +++++++++++++++++++++++++++++--
 arch/arm/boot/dts/imx6qdl-gw52xx.dtsi | 159 ++++++++++++++++++++++++++++++--
 arch/arm/boot/dts/imx6qdl-gw53xx.dtsi | 165 +++++++++++++++++++++++++++++++--
 arch/arm/boot/dts/imx6qdl-gw54xx.dtsi | 167 ++++++++++++++++++++++++++++++++--
 arch/arm/boot/dts/imx6qdl-gw551x.dtsi | 147 ++++++++++++++++++++++++++++--
 arch/arm/boot/dts/imx6qdl-gw552x.dtsi | 153 +++++++++++++++++++++++++++++--
 arch/arm/boot/dts/imx6qdl-gw553x.dtsi | 141 +++++++++++++++++++++++++++-
 arch/arm/boot/dts/imx6qdl-gw560x.dtsi | 164 +++++++++++++++++++++++++++++++--
 arch/arm/boot/dts/imx6qdl-gw5903.dtsi | 140 +++++++++++++++++++++++++++-
 arch/arm/boot/dts/imx6qdl-gw5904.dtsi | 141 +++++++++++++++++++++++++++-
 arch/arm/boot/dts/imx6qdl-gw5907.dtsi | 142 ++++++++++++++++++++++++++++-
 arch/arm/boot/dts/imx6qdl-gw5910.dtsi | 160 +++++++++++++++++++++++++++++++-
 arch/arm/boot/dts/imx6qdl-gw5912.dtsi | 147 +++++++++++++++++++++++++++++-
 arch/arm/boot/dts/imx6qdl-gw5913.dtsi | 153 ++++++++++++++++++++++++++++++-
 14 files changed, 2075 insertions(+), 57 deletions(-)

diff --git a/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
index 419a7cd..7705285 100644
--- a/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -19,6 +20,53 @@
 		bootargs = "console=ttymxc1,115200";
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -102,6 +150,103 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_an1";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
+		compatible = "nxp,pca9555";
+		reg = <0x23>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
+	};
+
 	eeprom1: eeprom at 50 {
 		compatible = "atmel,24c02";
 		reg = <0x50>;
@@ -126,13 +271,6 @@
 		pagesize = <16>;
 	};
 
-	gpio: pca9555 at 23 {
-		compatible = "nxp,pca9555";
-		reg = <0x23>;
-		gpio-controller;
-		#gpio-cells = <2>;
-	};
-
 	rtc: ds1672 at 68 {
 		compatible = "dallas,ds1672";
 		reg = <0x68>;
@@ -387,6 +525,7 @@
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1
 			MX6QDL_PAD_EIM_D28__I2C1_SDA		0x4001b8b1
+			MX6QDL_PAD_GPIO_4__GPIO1_IO04		0x0001b0b0 /* GSC_IRQ# */
 		>;
 	};
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
index 60563ff..9e5bec1 100644
--- a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -28,6 +29,53 @@
 		default-brightness-level = <7>;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -165,6 +213,109 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_1p0";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+
+			channel at 29 {
+				gw,mode = <1>;
+				reg = <0x29>;
+				label = "vdd_an1";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
+		compatible = "nxp,pca9555";
+		reg = <0x23>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
+	};
+
 	eeprom1: eeprom at 50 {
 		compatible = "atmel,24c02";
 		reg = <0x50>;
@@ -189,13 +340,6 @@
 		pagesize = <16>;
 	};
 
-	gpio: pca9555 at 23 {
-		compatible = "nxp,pca9555";
-		reg = <0x23>;
-		gpio-controller;
-		#gpio-cells = <2>;
-	};
-
 	rtc: ds1672 at 68 {
 		compatible = "dallas,ds1672";
 		reg = <0x68>;
@@ -504,6 +648,7 @@
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1
 			MX6QDL_PAD_EIM_D28__I2C1_SDA		0x4001b8b1
+			MX6QDL_PAD_GPIO_4__GPIO1_IO04		0xb0b1
 		>;
 	};
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
index 8942bec..7ea4fdd 100644
--- a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -28,6 +29,53 @@
 		default-brightness-level = <7>;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -158,6 +206,115 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_1p0";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+
+			channel at 26 {
+				gw,mode = <1>;
+				reg = <0x26>;
+				label = "vdd_gps";
+			};
+
+			channel at 29 {
+				gw,mode = <1>;
+				reg = <0x29>;
+				label = "vdd_an1";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
+		compatible = "nxp,pca9555";
+		reg = <0x23>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
+	};
+
 	eeprom1: eeprom at 50 {
 		compatible = "atmel,24c02";
 		reg = <0x50>;
@@ -182,13 +339,6 @@
 		pagesize = <16>;
 	};
 
-	gpio: pca9555 at 23 {
-		compatible = "nxp,pca9555";
-		reg = <0x23>;
-		gpio-controller;
-		#gpio-cells = <2>;
-	};
-
 	rtc: ds1672 at 68 {
 		compatible = "dallas,ds1672";
 		reg = <0x68>;
@@ -486,6 +636,7 @@
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1
 			MX6QDL_PAD_EIM_D28__I2C1_SDA		0x4001b8b1
+			MX6QDL_PAD_GPIO_4__GPIO1_IO04		0xb0b1
 		>;
 	};
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
index c40583d..0c19759 100644
--- a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 #include <dt-bindings/sound/fsl-imx-audmux.h>
 
 / {
@@ -29,6 +30,53 @@
 		default-brightness-level = <7>;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -195,6 +243,117 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_1p0";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+
+			channel at 26 {
+				gw,mode = <1>;
+				reg = <0x26>;
+				label = "vdd_gps";
+			};
+		};
+
+		fan-controller at 2c {
+			compatible = "gw,gsc-fan";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x2c>;
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
+		compatible = "nxp,pca9555";
+		reg = <0x23>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
+	};
+
 	eeprom1: eeprom at 50 {
 		compatible = "atmel,24c02";
 		reg = <0x50>;
@@ -219,13 +378,6 @@
 		pagesize = <16>;
 	};
 
-	gpio: pca9555 at 23 {
-		compatible = "nxp,pca9555";
-		reg = <0x23>;
-		gpio-controller;
-		#gpio-cells = <2>;
-	};
-
 	rtc: ds1672 at 68 {
 		compatible = "dallas,ds1672";
 		reg = <0x68>;
@@ -571,6 +723,7 @@
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1
 			MX6QDL_PAD_EIM_D28__I2C1_SDA		0x4001b8b1
+			MX6QDL_PAD_GPIO_4__GPIO1_IO04		0xb0b1
 		>;
 	};
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw551x.dtsi b/arch/arm/boot/dts/imx6qdl-gw551x.dtsi
index 8c33510..1516e2b 100644
--- a/arch/arm/boot/dts/imx6qdl-gw551x.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw551x.dtsi
@@ -47,6 +47,7 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/media/tda1997x.h>
+#include <dt-bindings/input/linux-event-codes.h>
 #include <dt-bindings/sound/fsl-imx-audmux.h>
 
 / {
@@ -63,6 +64,53 @@
 		bootargs = "console=ttymxc1,115200";
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -167,6 +215,97 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8a";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_1p0b";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
+		compatible = "nxp,pca9555";
+		reg = <0x23>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
+	};
+
 	eeprom1: eeprom at 50 {
 		compatible = "atmel,24c02";
 		reg = <0x50>;
@@ -191,13 +330,6 @@
 		pagesize = <16>;
 	};
 
-	gpio: pca9555 at 23 {
-		compatible = "nxp,pca9555";
-		reg = <0x23>;
-		gpio-controller;
-		#gpio-cells = <2>;
-	};
-
 	rtc: ds1672 at 68 {
 		compatible = "dallas,ds1672";
 		reg = <0x68>;
@@ -464,6 +596,7 @@
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1
 			MX6QDL_PAD_EIM_D28__I2C1_SDA		0x4001b8b1
+			MX6QDL_PAD_GPIO_4__GPIO1_IO04		0xb0b1
 		>;
 	};
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw552x.dtsi b/arch/arm/boot/dts/imx6qdl-gw552x.dtsi
index dc646b7..3cb568d 100644
--- a/arch/arm/boot/dts/imx6qdl-gw552x.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw552x.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -20,6 +21,53 @@
 		bootargs = "console=ttymxc1,115200";
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -92,6 +140,103 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_1p0";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
+		compatible = "nxp,pca9555";
+		reg = <0x23>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
+	};
+
 	eeprom1: eeprom at 50 {
 		compatible = "atmel,24c02";
 		reg = <0x50>;
@@ -116,13 +261,6 @@
 		pagesize = <16>;
 	};
 
-	gpio: pca9555 at 23 {
-		compatible = "nxp,pca9555";
-		reg = <0x23>;
-		gpio-controller;
-		#gpio-cells = <2>;
-	};
-
 	rtc: ds1672 at 68 {
 		compatible = "dallas,ds1672";
 		reg = <0x68>;
@@ -297,6 +435,7 @@
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1
 			MX6QDL_PAD_EIM_D28__I2C1_SDA		0x4001b8b1
+			MX6QDL_PAD_GPIO_4__GPIO1_IO04		0xb0b1
 		>;
 	};
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw553x.dtsi b/arch/arm/boot/dts/imx6qdl-gw553x.dtsi
index ee85031..db30de5 100644
--- a/arch/arm/boot/dts/imx6qdl-gw553x.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw553x.dtsi
@@ -46,6 +46,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -61,6 +62,53 @@
 		stdout-path = &uart2;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -130,11 +178,101 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
-	gpio: pca9555 at 23 {
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8a";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_1p0b";
+			};
+
+			channel at 26 {
+				gw,mode = <1>;
+				reg = <0x26>;
+				label = "vdd_an1";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
 		compatible = "nxp,pca9555";
 		reg = <0x23>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
 	};
 
 	eeprom1: eeprom at 50 {
@@ -428,6 +566,7 @@
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1
 			MX6QDL_PAD_EIM_D28__I2C1_SDA		0x4001b8b1
+			MX6QDL_PAD_GPIO_4__GPIO1_IO04		0xb0b1
 		>;
 	};
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw560x.dtsi b/arch/arm/boot/dts/imx6qdl-gw560x.dtsi
index e8e36df..1871331 100644
--- a/arch/arm/boot/dts/imx6qdl-gw560x.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw560x.dtsi
@@ -88,6 +88,53 @@
 		default-on;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -243,6 +290,115 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_an1";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+
+			channel at 26 {
+				gw,mode = <1>;
+				reg = <0x26>;
+				label = "vdd_gps";
+			};
+
+			channel at 29 {
+				gw,mode = <1>;
+				reg = <0x29>;
+				label = "vdd_an2";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
+		compatible = "nxp,pca9555";
+		reg = <0x23>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
+	};
+
 	eeprom1: eeprom at 50 {
 		compatible = "atmel,24c02";
 		reg = <0x50>;
@@ -267,13 +423,6 @@
 		pagesize = <16>;
 	};
 
-	pca9555: gpio at 23 {
-		compatible = "nxp,pca9555";
-		reg = <0x23>;
-		gpio-controller;
-		#gpio-cells = <2>;
-	};
-
 	ds1672: rtc at 68 {
 		compatible = "dallas,ds1672";
 		reg = <0x68>;
@@ -589,6 +738,7 @@
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1
 			MX6QDL_PAD_EIM_D28__I2C1_SDA		0x4001b8b1
+			MX6QDL_PAD_GPIO_4__GPIO1_IO04		0xb0b1
 		>;
 	};
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw5903.dtsi b/arch/arm/boot/dts/imx6qdl-gw5903.dtsi
index aee9221..0461085 100644
--- a/arch/arm/boot/dts/imx6qdl-gw5903.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw5903.dtsi
@@ -46,6 +46,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	chosen {
@@ -71,6 +72,53 @@
 		default-brightness-level = <100>;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -183,11 +231,101 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
-	pca9555: gpio at 23 {
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_an1";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
 		compatible = "nxp,pca9555";
 		reg = <0x23>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
 	};
 
 	eeprom1: eeprom at 50 {
diff --git a/arch/arm/boot/dts/imx6qdl-gw5904.dtsi b/arch/arm/boot/dts/imx6qdl-gw5904.dtsi
index 6d21cc6..8b2fe2f 100644
--- a/arch/arm/boot/dts/imx6qdl-gw5904.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw5904.dtsi
@@ -46,6 +46,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -68,6 +69,53 @@
 		default-brightness-level = <7>;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -205,11 +253,101 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
-	pca9555: gpio at 23 {
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_an1";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
 		compatible = "nxp,pca9555";
 		reg = <0x23>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
 	};
 
 	eeprom1: eeprom at 50 {
@@ -484,6 +622,7 @@
 		fsl,pins = <
 			MX6QDL_PAD_EIM_D21__I2C1_SCL		0x4001b8b1
 			MX6QDL_PAD_EIM_D28__I2C1_SDA		0x4001b8b1
+			MX6QDL_PAD_GPIO_4__GPIO1_IO04		0x0001b0b0 /* GSC_IRQ# */
 		>;
 	};
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw5907.dtsi b/arch/arm/boot/dts/imx6qdl-gw5907.dtsi
index 0bdebdd..b1ff7c8 100644
--- a/arch/arm/boot/dts/imx6qdl-gw5907.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw5907.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -19,6 +20,53 @@
 		stdout-path = &uart2;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -102,11 +150,101 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
-	gpio at 23 {
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_an1";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
 		compatible = "nxp,pca9555";
 		reg = <0x23>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
 	};
 
 	eeprom at 50 {
@@ -133,7 +271,7 @@
 		pagesize = <16>;
 	};
 
-	rtc at 68 {
+	ds1672 at 68 {
 		compatible = "dallas,ds1672";
 		reg = <0x68>;
 	};
diff --git a/arch/arm/boot/dts/imx6qdl-gw5910.dtsi b/arch/arm/boot/dts/imx6qdl-gw5910.dtsi
index 30fe47f..4bcd5b7 100644
--- a/arch/arm/boot/dts/imx6qdl-gw5910.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw5910.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -22,6 +23,53 @@
 		reg = <0x10000000 0x20000000>;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -125,11 +173,121 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
-	gpio at 23 {
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 6 {
+				gw,mode = <0>;
+				reg = <0x06>;
+				label = "temp";
+			};
+
+			channel at 8 {
+				gw,mode = <3>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at 82 {
+				gw,mode = <2>;
+				reg = <0x82>;
+				label = "vdd_vin";
+				gw,voltage-divider-ohms = <22100 1000>;
+				gw,voltage-offset-microvolt = <800000>;
+			};
+
+			channel at 84 {
+				gw,mode = <2>;
+				reg = <0x84>;
+				label = "vdd_5p0";
+				gw,voltage-divider-ohms = <22100 10000>;
+			};
+
+			channel at 86 {
+				gw,mode = <2>;
+				reg = <0x86>;
+				label = "vdd_3p3";
+				gw,voltage-divider-ohms = <10000 10000>;
+			};
+
+			channel at 88 {
+				gw,mode = <2>;
+				reg = <0x88>;
+				label = "vdd_2p5";
+				gw,voltage-divider-ohms = <10000 10000>;
+			};
+
+			channel at 8c {
+				gw,mode = <2>;
+				reg = <0x8c>;
+				label = "vdd_3p0";
+			};
+
+			channel at 8e {
+				gw,mode = <2>;
+				reg = <0x8e>;
+				label = "vdd_arm";
+			};
+
+			channel at 90 {
+				gw,mode = <2>;
+				reg = <0x90>;
+				label = "vdd_soc";
+			};
+
+			channel at 92 {
+				gw,mode = <2>;
+				reg = <0x92>;
+				label = "vdd_1p5";
+			};
+
+			channel at 98 {
+				gw,mode = <2>;
+				reg = <0x98>;
+				label = "vdd_1p8";
+			};
+
+			channel at 9a {
+				gw,mode = <2>;
+				reg = <0x9a>;
+				label = "vdd_1p0";
+				gw,voltage-divider-ohms = <10000 10000>;
+			};
+
+			channel at 9c {
+				gw,mode = <2>;
+				reg = <0x9c>;
+				label = "vdd_an1";
+				gw,voltage-divider-ohms = <10000 10000>;
+			};
+
+			channel at a2 {
+				gw,mode = <2>;
+				reg = <0xa2>;
+				label = "vdd_gsc";
+				gw,voltage-divider-ohms = <10000 10000>;
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
 		compatible = "nxp,pca9555";
 		reg = <0x23>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
 	};
 
 	eeprom at 50 {
diff --git a/arch/arm/boot/dts/imx6qdl-gw5912.dtsi b/arch/arm/boot/dts/imx6qdl-gw5912.dtsi
index 8c57fd2..bde4690 100644
--- a/arch/arm/boot/dts/imx6qdl-gw5912.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw5912.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -20,6 +21,53 @@
 		stdout-path = &uart2;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -106,11 +154,108 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
-	gpio at 23 {
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 0 {
+				gw,mode = <0>;
+				reg = <0x00>;
+				label = "temp";
+			};
+
+			channel at 2 {
+				gw,mode = <1>;
+				reg = <0x02>;
+				label = "vdd_vin";
+			};
+
+			channel at 5 {
+				gw,mode = <1>;
+				reg = <0x05>;
+				label = "vdd_3p3";
+			};
+
+			channel at 8 {
+				gw,mode = <1>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at b {
+				gw,mode = <1>;
+				reg = <0x0b>;
+				label = "vdd_5p0";
+			};
+
+			channel at e {
+				gw,mode = <1>;
+				reg = <0xe>;
+				label = "vdd_arm";
+			};
+
+			channel at 11 {
+				gw,mode = <1>;
+				reg = <0x11>;
+				label = "vdd_soc";
+			};
+
+			channel at 14 {
+				gw,mode = <1>;
+				reg = <0x14>;
+				label = "vdd_3p0";
+			};
+
+			channel at 17 {
+				gw,mode = <1>;
+				reg = <0x17>;
+				label = "vdd_1p5";
+			};
+
+			channel at 1d {
+				gw,mode = <1>;
+				reg = <0x1d>;
+				label = "vdd_1p8";
+			};
+
+			channel at 20 {
+				gw,mode = <1>;
+				reg = <0x20>;
+				label = "vdd_1p0";
+			};
+
+			channel at 23 {
+				gw,mode = <1>;
+				reg = <0x23>;
+				label = "vdd_2p5";
+			};
+		};
+
+		fan-controller at a {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "gw,gsc-fan";
+			reg = <0x0a>;
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
 		compatible = "nxp,pca9555";
 		reg = <0x23>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
 	};
 
 	eeprom at 50 {
diff --git a/arch/arm/boot/dts/imx6qdl-gw5913.dtsi b/arch/arm/boot/dts/imx6qdl-gw5913.dtsi
index 635c203..d62a8da 100644
--- a/arch/arm/boot/dts/imx6qdl-gw5913.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw5913.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
 
 / {
 	/* these are used by bootloader for disabling nodes */
@@ -19,6 +20,53 @@
 		stdout-path = &uart2;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		user-pb {
+			label = "user_pb";
+			gpios = <&gsc_gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		user-pb1x {
+			label = "user_pb1x";
+			linux,code = <BTN_1>;
+			interrupt-parent = <&gsc>;
+			interrupts = <0>;
+		};
+
+		key-erased {
+			label = "key-erased";
+			linux,code = <BTN_2>;
+			interrupt-parent = <&gsc>;
+			interrupts = <1>;
+		};
+
+		eeprom-wp {
+			label = "eeprom_wp";
+			linux,code = <BTN_3>;
+			interrupt-parent = <&gsc>;
+			interrupts = <2>;
+		};
+
+		tamper {
+			label = "tamper";
+			linux,code = <BTN_4>;
+			interrupt-parent = <&gsc>;
+			interrupts = <5>;
+		};
+
+		switch-hold {
+			label = "switch_hold";
+			linux,code = <BTN_5>;
+			interrupt-parent = <&gsc>;
+			interrupts = <7>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -87,11 +135,114 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
-	gpio at 23 {
+	gsc: gsc at 20 {
+		compatible = "gw,gsc";
+		reg = <0x20>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <4 GPIO_ACTIVE_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		#size-cells = <0>;
+
+		adc {
+			compatible = "gw,gsc-adc";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			channel at 6 {
+				gw,mode = <0>;
+				reg = <0x06>;
+				label = "temp";
+			};
+
+			channel at 8 {
+				gw,mode = <3>;
+				reg = <0x08>;
+				label = "vdd_bat";
+			};
+
+			channel at 82 {
+				gw,mode = <2>;
+				reg = <0x82>;
+				label = "vdd_vin";
+				gw,voltage-divider-ohms = <22100 1000>;
+				gw,voltage-offset-microvolt = <800000>;
+			};
+
+			channel at 84 {
+				gw,mode = <2>;
+				reg = <0x84>;
+				label = "vdd_5p0";
+				gw,voltage-divider-ohms = <22100 10000>;
+			};
+
+			channel at 86 {
+				gw,mode = <2>;
+				reg = <0x86>;
+				label = "vdd_3p3";
+				gw,voltage-divider-ohms = <10000 10000>;
+			};
+
+			channel at 88 {
+				gw,mode = <2>;
+				reg = <0x88>;
+				label = "vdd_2p5";
+				gw,voltage-divider-ohms = <10000 10000>;
+			};
+
+			channel at 8c {
+				gw,mode = <2>;
+				reg = <0x8c>;
+				label = "vdd_arm";
+			};
+
+			channel at 8e {
+				gw,mode = <2>;
+				reg = <0x8e>;
+				label = "vdd_soc";
+			};
+
+			channel at 90 {
+				gw,mode = <2>;
+				reg = <0x90>;
+				label = "vdd_1p5";
+			};
+
+			channel at 92 {
+				gw,mode = <2>;
+				reg = <0x92>;
+				label = "vdd_1p0";
+			};
+
+			channel at 98 {
+				gw,mode = <2>;
+				reg = <0x98>;
+				label = "vdd_3p0";
+			};
+
+			channel at 9a {
+				gw,mode = <2>;
+				reg = <0x9a>;
+				label = "vdd_an1";
+				gw,voltage-divider-ohms = <10000 10000>;
+			};
+
+			channel at a2 {
+				gw,mode = <2>;
+				reg = <0xa2>;
+				label = "vdd_gsc";
+				gw,voltage-divider-ohms = <10000 10000>;
+			};
+		};
+	};
+
+	gsc_gpio: gpio at 23 {
 		compatible = "nxp,pca9555";
 		reg = <0x23>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		interrupt-parent = <&gsc>;
+		interrupts = <4>;
 	};
 
 	eeprom at 50 {
-- 
2.7.4




More information about the linux-arm-kernel mailing list