board: asus: transformer: add ASUS Transformer T30 family support

The ASUS Transformer T30 family are 2-in-1 detachable tablets
and AiO developed by ASUS that run the Android operating system
(TF600T runs Windows RT and P1801-T runs Android and Windows).
The T30 Transformers feature a 10.1-inch display (apart P1801-T),
an Nvidia Tegra 3 quad-core chip, 1/2 GB of RAM, and 16/32 GB of
storage. Transformers board derives from Nvidia Cardhu development
board.

This patch brings support for 7 known Transformer devices:
- ASUS Transformer Prime TF201
- ASUS Transformer Pad TF300T/TF300TG/TF300TL
- ASUS VivoTab RT TF600T (Windows RT based)
- ASUS Transformer Infinity TF700T
- ASUS Portable AiO P1801-T

Tested-by: Andreas Westman Dorcsak <[email protected]> # all devices
Signed-off-by: Svyatoslav Ryhel <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

10 files changed, 388 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 480269fa606..c87729d45ef 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -237,6 +237,13 @@ dtb-$(CONFIG_ARCH_TEGRA) += tegra20-harmony.dtb \
 	tegra20-ventana.dtb \
 	tegra20-colibri.dtb \
 	tegra30-apalis.dtb \
+	tegra30-asus-p1801-t.dtb \
+	tegra30-asus-tf201.dtb \
+	tegra30-asus-tf300t.dtb \
+	tegra30-asus-tf300tg.dtb \
+	tegra30-asus-tf300tl.dtb \
+	tegra30-asus-tf600t.dtb \
+	tegra30-asus-tf700t.dtb \
 	tegra30-beaver.dtb \
 	tegra30-cardhu.dtb \
 	tegra30-colibri.dtb \
diff --git a/arch/arm/dts/tegra30-asus-p1801-t.dts b/arch/arm/dts/tegra30-asus-p1801-t.dts
new file mode 100644
index 00000000000..4b2dc61713c
--- /dev/null
+++ b/arch/arm/dts/tegra30-asus-p1801-t.dts
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "tegra30-asus-transformer.dtsi"
+
+/ {
+	model = "ASUS Portable AiO P1801-T";
+	compatible = "asus,p1801-t", "nvidia,tegra30";
+
+	/delete-node/ host1x@50000000;
+	/delete-node/ pwm@7000a000;
+
+	/delete-node/ backlight;
+	/delete-node/ panel;
+
+	/delete-node/ regulator-pnl;
+	/delete-node/ regulator-bl;
+};
diff --git a/arch/arm/dts/tegra30-asus-tf201.dts b/arch/arm/dts/tegra30-asus-tf201.dts
new file mode 100644
index 00000000000..54f359ef960
--- /dev/null
+++ b/arch/arm/dts/tegra30-asus-tf201.dts
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "tegra30-asus-transformer.dtsi"
+
+/ {
+	model = "ASUS Transformer Prime TF201";
+	compatible = "asus,tf201", "nvidia,tegra30";
+};
diff --git a/arch/arm/dts/tegra30-asus-tf300t.dts b/arch/arm/dts/tegra30-asus-tf300t.dts
new file mode 100644
index 00000000000..db08488420e
--- /dev/null
+++ b/arch/arm/dts/tegra30-asus-tf300t.dts
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "tegra30-asus-transformer.dtsi"
+
+/ {
+	model = "ASUS Transformer Pad TF300T";
+	compatible = "asus,tf300t", "nvidia,tegra30";
+
+	gpio@6000d000 {
+		volume-buttons-hog {
+			gpio-hog;
+			gpios = <TEGRA_GPIO(R, 0) GPIO_ACTIVE_HIGH>,
+				<TEGRA_GPIO(K, 7) GPIO_ACTIVE_HIGH>;
+			output-low;
+		};
+	};
+};
diff --git a/arch/arm/dts/tegra30-asus-tf300tg.dts b/arch/arm/dts/tegra30-asus-tf300tg.dts
new file mode 100644
index 00000000000..6f42182c99d
--- /dev/null
+++ b/arch/arm/dts/tegra30-asus-tf300tg.dts
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "tegra30-asus-transformer.dtsi"
+
+/ {
+	model = "ASUS Transformer Pad 3G TF300TG";
+	compatible = "asus,tf300tg", "nvidia,tegra30";
+};
diff --git a/arch/arm/dts/tegra30-asus-tf300tl.dts b/arch/arm/dts/tegra30-asus-tf300tl.dts
new file mode 100644
index 00000000000..242f79170c4
--- /dev/null
+++ b/arch/arm/dts/tegra30-asus-tf300tl.dts
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "tegra30-asus-transformer.dtsi"
+
+/ {
+	model = "ASUS Transformer Pad LTE TF300TL";
+	compatible = "asus,tf300tl", "nvidia,tegra30";
+};
diff --git a/arch/arm/dts/tegra30-asus-tf600t.dts b/arch/arm/dts/tegra30-asus-tf600t.dts
new file mode 100644
index 00000000000..c9b8f4fa140
--- /dev/null
+++ b/arch/arm/dts/tegra30-asus-tf600t.dts
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "tegra30-asus-transformer.dtsi"
+
+/ {
+	model = "ASUS VivoTab RT TF600T";
+	compatible = "asus,tf600t", "nvidia,tegra30";
+
+	aliases {
+		spi0 = &spi4;
+	};
+
+	/delete-node/ host1x@50000000;
+
+	pmic_i2c: i2c@7000d000 {
+		/* Texas Instruments TPS659110 PMIC */
+		pmic: tps65911@2d {
+			regulators {
+				vdd_1v2_bl: vdd1 {
+					regulator-name = "vdd_1v2_backlight";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+					regulator-always-on;
+					regulator-boot-on;
+					ti,regulator-ext-sleep-control = <8>;
+				};
+
+				/delete-node/ ldo2;
+				/delete-node/ ldo3;
+
+				/* uSD slot VDDIO */
+				vddio_usd: ldo5 {
+					regulator-name = "vddio_sdmmc";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+				};
+
+				avdd_dsi_csi: ldo6 {
+					regulator-name = "avdd_dsi_csi";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+				};
+			};
+		};
+	};
+
+	spi4: spi@7000da00 {
+		status = "okay";
+		spi-max-frequency = <25000000>;
+
+		spi-flash@1 {
+			compatible = "winbond,w25q32", "jedec,spi-nor";
+			reg = <1>;
+			spi-max-frequency = <20000000>;
+		};
+	};
+
+	backlight {
+		power-supply = <&vdd_1v2_bl>;
+	};
+
+	gpio-keys {
+		key-volume-up {
+			label = "Volume Up";
+			gpios = <&gpio TEGRA_GPIO(Q, 3) GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_UP>;
+		};
+
+		key-volume-down {
+			label = "Volume Down";
+			gpios = <&gpio TEGRA_GPIO(Q, 4) GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_DOWN>;
+		};
+	};
+
+	/delete-node/ panel;
+
+	vdd_usd: regulator-usd {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_usd";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	/delete-node/ regulator-pnl;
+	/delete-node/ regulator-bl;
+};
diff --git a/arch/arm/dts/tegra30-asus-tf700t.dts b/arch/arm/dts/tegra30-asus-tf700t.dts
new file mode 100644
index 00000000000..d530527c9f8
--- /dev/null
+++ b/arch/arm/dts/tegra30-asus-tf700t.dts
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "tegra30-asus-transformer.dtsi"
+
+/ {
+	model = "ASUS Transformer Infinity TF700T";
+	compatible = "asus,tf700t", "nvidia,tegra30";
+
+	/delete-node/ host1x@50000000;
+
+	/delete-node/ panel;
+};
diff --git a/arch/arm/dts/tegra30-asus-transformer.dtsi b/arch/arm/dts/tegra30-asus-transformer.dtsi
new file mode 100644
index 00000000000..4eee1df084c
--- /dev/null
+++ b/arch/arm/dts/tegra30-asus-transformer.dtsi
@@ -0,0 +1,211 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/input/input.h>
+
+#include "tegra30.dtsi"
+
+/ {
+	chosen {
+		stdout-path = &uarta;
+	};
+
+	aliases {
+		i2c0 = &pwr_i2c;
+		i2c1 = &gen1_i2c;
+
+		mmc0 = &sdmmc4;	/* eMMC */
+		mmc1 = &sdmmc1; /* uSD slot */
+
+		rtc0 = &pmic;
+		rtc1 = "/rtc@7000e000";
+
+		usb0 = &usb1;
+		usb1 = &usb3; /* Dock USB */
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x40000000>;
+	};
+
+	host1x@50000000 {
+		dc@54200000 {
+			rgb {
+				status = "okay";
+
+				nvidia,panel = <&panel>;
+			};
+		};
+	};
+
+	uarta: serial@70006000 {
+		status = "okay";
+	};
+
+	pwm: pwm@7000a000 {
+		status = "okay";
+	};
+
+	gen1_i2c: i2c@7000c000 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	pwr_i2c: i2c@7000d000 {
+		status = "okay";
+		clock-frequency = <400000>;
+
+		/* Texas Instruments TPS659110 PMIC */
+		pmic: tps65911@2d {
+			compatible = "ti,tps65911";
+			reg = <0x2d>;
+
+			interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
+			#interrupt-cells = <2>;
+			interrupt-controller;
+
+			ti,system-power-controller;
+
+			#gpio-cells = <2>;
+			gpio-controller;
+
+			regulators {
+				/* eMMC VDD */
+				vcore_emmc: ldo1 {
+					regulator-name = "vdd_emmc_core";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+				};
+
+				/* uSD slot VDD */
+				vdd_usd: ldo2 {
+					regulator-name = "vdd_usd";
+					regulator-min-microvolt = <3100000>;
+					regulator-max-microvolt = <3100000>;
+				};
+
+				/* uSD slot VDDIO */
+				vddio_usd: ldo3 {
+					regulator-name = "vddio_usd";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <3100000>;
+				};
+			};
+		};
+	};
+
+	sdmmc1: sdhci@78000000 {
+		status = "okay";
+		bus-width = <4>;
+
+		cd-gpios = <&gpio TEGRA_GPIO(I, 5) GPIO_ACTIVE_LOW>;
+		power-gpios = <&gpio TEGRA_GPIO(D, 7) GPIO_ACTIVE_HIGH>;
+
+		vmmc-supply = <&vdd_usd>;
+		vqmmc-supply = <&vddio_usd>;
+	};
+
+	sdmmc4: sdhci@78000600 {
+		status = "okay";
+		bus-width = <8>;
+		non-removable;
+	};
+
+	/* USB via ASUS connector */
+	usb1: usb@7d000000 {
+		status = "okay";
+		dr_mode = "otg";
+	};
+
+	/* Dock's USB port */
+	usb3: usb@7d008000 {
+		status = "okay";
+	};
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+
+		enable-gpios = <&gpio TEGRA_GPIO(H, 2) GPIO_ACTIVE_HIGH>;
+		power-supply = <&vdd_5v0_bl>;
+		pwms = <&pwm 0 4000000>;
+
+		brightness-levels = <1 35 70 105 140 175 210 255>;
+		default-brightness-level = <5>;
+	};
+
+	/* PMIC has a built-in 32KHz oscillator which is used by PMC */
+	clk32k_in: clock-32k {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <32768>;
+		clock-output-names = "pmic-oscillator";
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		key-power {
+			label = "Power";
+			gpios = <&gpio TEGRA_GPIO(V, 0) GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_ENTER>;
+		};
+
+		key-volume-up {
+			label = "Volume Up";
+			gpios = <&gpio TEGRA_GPIO(Q, 2) GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_UP>;
+		};
+
+		key-volume-down {
+			label = "Volume Down";
+			gpios = <&gpio TEGRA_GPIO(Q, 3) GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_DOWN>;
+		};
+	};
+
+	panel: panel {
+		compatible = "simple-panel";
+
+		power-supply = <&vdd_pnl_reg>;
+		enable-gpios = <&gpio TEGRA_GPIO(N, 6) GPIO_ACTIVE_HIGH>;
+
+		backlight = <&backlight>;
+
+		display-timings {
+			timing@0 {
+				/* 1280x800@60Hz */
+				clock-frequency = <68000000>;
+
+				hactive = <1280>;
+				hfront-porch = <48>;
+				hback-porch = <18>;
+				hsync-len = <30>;
+
+				vactive = <800>;
+				vfront-porch = <3>;
+				vback-porch = <12>;
+				vsync-len = <5>;
+			};
+		};
+	};
+
+	vdd_pnl_reg: regulator-pnl {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_panel";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio TEGRA_GPIO(W, 1) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	vdd_5v0_bl: regulator-bl {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_5v0_bl";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-boot-on;
+		gpio = <&gpio TEGRA_GPIO(H, 3) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+};
diff --git a/arch/arm/mach-tegra/tegra30/Kconfig b/arch/arm/mach-tegra/tegra30/Kconfig
index 85b8ce294f2..4f78d0ba973 100644
--- a/arch/arm/mach-tegra/tegra30/Kconfig
+++ b/arch/arm/mach-tegra/tegra30/Kconfig
@@ -24,6 +24,10 @@ config TARGET_TEC_NG
 	bool "Avionic Design TEC-NG board"
 	select BOARD_LATE_INIT
 
+config TARGET_TRANSFORMER_T30
+	bool "Asus Tegra30 Transformer board"
+	select BOARD_LATE_INIT
+
 endchoice
 
 config SYS_SOC
@@ -34,5 +38,6 @@ source "board/nvidia/beaver/Kconfig"
 source "board/nvidia/cardhu/Kconfig"
 source "board/toradex/colibri_t30/Kconfig"
 source "board/avionic-design/tec-ng/Kconfig"
+source "board/asus/transformer-t30/Kconfig"
 
 endif