arm64: dts: rockchip: add Gru Scarlet devicetrees

Gru-Scarlet is a tablet device using ChomeOS, dual-dsi display
and Wacom touchscreen with stylus.

There exist two variants in the market using different displays
that are differentiated via their sku-id.
The bootloader on them also determines the correct devicetree to
load via the sku-id.

So add a common scarlet dtsi and two minimal board devicetrees
for the two display variants.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/arm/rockchip.txt

@@ -152,6 +152,40 @@ Rockchip platforms device tree bindings
       - compatible = "google,veyron-pinky-rev2", "google,veyron-pinky",
 		     "google,veyron", "rockchip,rk3288";
 
+- Google Scarlet - with display from Kingdisplay
+    Required root node properties:
+      - compatible = "google,scarlet-rev15-sku7", "google,scarlet-rev15",
+		     "google,scarlet-rev14-sku7", "google,scarlet-rev14",
+		     "google,scarlet-rev13-sku7", "google,scarlet-rev13",
+		     "google,scarlet-rev12-sku7", "google,scarlet-rev12",
+		     "google,scarlet-rev11-sku7", "google,scarlet-rev11",
+		     "google,scarlet-rev10-sku7", "google,scarlet-rev10",
+		     "google,scarlet-rev9-sku7",  "google,scarlet-rev9",
+		     "google,scarlet-rev8-sku7",  "google,scarlet-rev8",
+		     "google,scarlet-rev7-sku7",  "google,scarlet-rev7",
+		     "google,scarlet-rev6-sku7",  "google,scarlet-rev6",
+		     "google,scarlet-rev5-sku7",  "google,scarlet-rev5",
+		     "google,scarlet-rev4-sku7",  "google,scarlet-rev4",
+		     "google,scarlet-rev3-sku7",  "google,scarlet-rev3",
+		     "google,scarlet", "google,gru", "rockchip,rk3399";
+
+- Google Scarlet - with display from Innolux
+    Required root node properties:
+      - compatible = "google,scarlet-rev15-sku6", "google,scarlet-rev15",
+		     "google,scarlet-rev14-sku6", "google,scarlet-rev14",
+		     "google,scarlet-rev13-sku6", "google,scarlet-rev13",
+		     "google,scarlet-rev12-sku6", "google,scarlet-rev12",
+		     "google,scarlet-rev11-sku6", "google,scarlet-rev11",
+		     "google,scarlet-rev10-sku6", "google,scarlet-rev10",
+		     "google,scarlet-rev9-sku6",  "google,scarlet-rev9",
+		     "google,scarlet-rev8-sku6",  "google,scarlet-rev8",
+		     "google,scarlet-rev7-sku6",  "google,scarlet-rev7",
+		     "google,scarlet-rev6-sku6",  "google,scarlet-rev6",
+		     "google,scarlet-rev5-sku6",  "google,scarlet-rev5",
+		     "google,scarlet-rev4-sku6",  "google,scarlet-rev4",
+		     "google,scarlet", "google,gru", "rockchip,rk3399";
+
+
 - Google Speedy (Asus C201 Chromebook):
     Required root node properties:
       - compatible = "google,veyron-speedy-rev9", "google,veyron-speedy-rev8",

arch/arm64/boot/dts/rockchip/Makefile

@@ -14,6 +14,8 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-ficus.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-firefly.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-bob.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-kevin.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-scarlet-inx.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-gru-scarlet-kd.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-puma-haikou.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock960.dtb

arch/arm64/boot/dts/rockchip/rk3399-gru-scarlet-inx.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Google Gru-Scarlet Rev4+ (SKU-6/Innolux) board device tree source
+ *
+ * Copyright 2018 Google, Inc
+ */
+
+/dts-v1/;
+
+#include "rk3399-gru-scarlet.dtsi"
+
+/ {
+	model = "Google Scarlet";
+	compatible = "google,scarlet-rev15-sku6", "google,scarlet-rev15",
+		     "google,scarlet-rev14-sku6", "google,scarlet-rev14",
+		     "google,scarlet-rev13-sku6", "google,scarlet-rev13",
+		     "google,scarlet-rev12-sku6", "google,scarlet-rev12",
+		     "google,scarlet-rev11-sku6", "google,scarlet-rev11",
+		     "google,scarlet-rev10-sku6", "google,scarlet-rev10",
+		     "google,scarlet-rev9-sku6",  "google,scarlet-rev9",
+		     "google,scarlet-rev8-sku6",  "google,scarlet-rev8",
+		     "google,scarlet-rev7-sku6",  "google,scarlet-rev7",
+		     "google,scarlet-rev6-sku6",  "google,scarlet-rev6",
+		     "google,scarlet-rev5-sku6",  "google,scarlet-rev5",
+		     "google,scarlet-rev4-sku6",  "google,scarlet-rev4",
+		     "google,scarlet", "google,gru", "rockchip,rk3399";
+};
+
+&mipi_panel {
+	compatible = "innolux,p097pfg";
+	avdd-supply = <&ppvarp_lcd>;
+	avee-supply = <&ppvarn_lcd>;
+};

arch/arm64/boot/dts/rockchip/rk3399-gru-scarlet-kd.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Google Gru-Scarlet Rev3+ (SKU-7/Kingdisplay) board device tree source
+ *
+ * Copyright 2018 Google, Inc
+ */
+
+/dts-v1/;
+
+#include "rk3399-gru-scarlet.dtsi"
+
+/ {
+	model = "Google Scarlet";
+	compatible = "google,scarlet-rev15-sku7", "google,scarlet-rev15",
+		     "google,scarlet-rev14-sku7", "google,scarlet-rev14",
+		     "google,scarlet-rev13-sku7", "google,scarlet-rev13",
+		     "google,scarlet-rev12-sku7", "google,scarlet-rev12",
+		     "google,scarlet-rev11-sku7", "google,scarlet-rev11",
+		     "google,scarlet-rev10-sku7", "google,scarlet-rev10",
+		     "google,scarlet-rev9-sku7",  "google,scarlet-rev9",
+		     "google,scarlet-rev8-sku7",  "google,scarlet-rev8",
+		     "google,scarlet-rev7-sku7",  "google,scarlet-rev7",
+		     "google,scarlet-rev6-sku7",  "google,scarlet-rev6",
+		     "google,scarlet-rev5-sku7",  "google,scarlet-rev5",
+		     "google,scarlet-rev4-sku7",  "google,scarlet-rev4",
+		     "google,scarlet-rev3-sku7",  "google,scarlet-rev3",
+		     "google,scarlet", "google,gru", "rockchip,rk3399";
+};
+
+&mipi_panel {
+	compatible = "kingdisplay,kd097d04";
+	power-supply = <&pp3300_s0>;
+};