pegatron: t30: add Pegatron Chagall devices support

Signed-off-by: Svyatoslav Ryhel <[email protected]>

arch/arm/dts/tegra30-pegatron-chagall.dts

@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/dts-v1/;
+
+#include "tegra30-asus-transformer.dtsi"
+
+/ {
+	model = "Pegatron Chagall";
+	compatible = "pegatron,chagall", "nvidia,tegra30";
+
+	gpio-keys {
+		key-volume-up {
+			label = "Volume Up";
+			gpios = <&gpio TEGRA_GPIO(Q, 0) GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_UP>;
+		};
+
+		key-volume-down {
+			label = "Volume Down";
+			gpios = <&gpio TEGRA_GPIO(Q, 1) GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_DOWN>;
+		};
+	};
+
+	vdd_5v0_bl: regulator-bl {
+		gpio = <&gpio TEGRA_GPIO(C, 6) GPIO_ACTIVE_HIGH>;
+	};
+};

configs/chagall.config

@@ -0,0 +1,5 @@
+CONFIG_DEFAULT_DEVICE_TREE="tegra30-pegatron-chagall"
+CONFIG_SYS_PROMPT="Tegra30 (Chagall) # "
+CONFIG_BOOTCOMMAND="setenv skip_boot 0; setenv gpio_button 129; if run check_button; then bootmenu; fi; if test ${skip_boot} -eq 1; then; else run bootcmd_usb0; run bootcmd_mmc1; run bootcmd_mmc0; poweroff; fi"
+CONFIG_USB_GADGET_MANUFACTURER="Pegatron"
+CONFIG_USB_GADGET_PRODUCT_NUM=0x4d00