[PATCH v4 1/3] ARM: dts: ti: Add AM57xx GP EVM board support

[Andrew Davis <afd@ti.com>]

The AM57xx GP EVM boards are built on top the AM57xx BeagleBoard-X15.
The EVM extends the BeagleBoard by adding a touchscreen, some buttons,
and a handful of peripheral extension slots.

Being a plugin extension of an existing standalone board; we define
the am57xx-evm as a composite-DTB of the base am57xx-beagle-x15
and a new am57xx-evm overlay.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Andrew Davis <afd@ti.com>
---
 arch/arm/boot/dts/Makefile        |   2 +
 arch/arm/boot/dts/am57xx-evm.dtso | 127 ++++++++++++++++++++++++++++++
 2 files changed, 129 insertions(+)
 create mode 100644 arch/arm/boot/dts/am57xx-evm.dtso

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index efe4152e5846..7f850cf5f063 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -994,10 +994,12 @@ dtb-$(CONFIG_SOC_OMAP5) += \
 	omap5-igep0050.dtb \
 	omap5-sbc-t54.dtb \
 	omap5-uevm.dtb
+am57xx-evm-dtbs := am57xx-beagle-x15.dtb am57xx-evm.dtbo
 dtb-$(CONFIG_SOC_DRA7XX) += \
 	am57xx-beagle-x15.dtb \
 	am57xx-beagle-x15-revb1.dtb \
 	am57xx-beagle-x15-revc.dtb \
+	am57xx-evm.dtb \
 	am5729-beagleboneai.dtb \
 	am57xx-cl-som-am57x.dtb \
 	am57xx-sbc-am57x.dtb \
diff --git a/arch/arm/boot/dts/am57xx-evm.dtso b/arch/arm/boot/dts/am57xx-evm.dtso
new file mode 100644
index 000000000000..12385a31061e
--- /dev/null
+++ b/arch/arm/boot/dts/am57xx-evm.dtso
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * DT overlay for AM57xx GP EVM boards
+ *
+ * Copyright (C) 2020-2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+&{/} {
+	compatible = "ti,am5728-evm", "ti,am572x-beagle-x15", "ti,am5728", "ti,dra742", "ti,dra74", "ti,dra7";
+	model = "TI AM5728 EVM";
+
+	aliases {
+		display0 = "/display";
+		display1 = "/connector"; // Fixme: &lcd0 and &hdmi0 could be
+					 // resolved here correcly based on
+					 // information in the base dtb symbol
+					 // table with a fix in dtc
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		button-user1 {
+			gpios = <&gpio2 23 GPIO_ACTIVE_LOW>;
+			label = "USER1";
+			linux,code = <BTN_1>;
+		};
+
+		button-user2 {
+			gpios = <&gpio2 25 GPIO_ACTIVE_LOW>;
+			label = "USER2";
+			linux,code = <BTN_2>;
+		};
+
+		button-user3 {
+			gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
+			label = "USER3";
+			linux,code = <BTN_3>;
+		};
+
+		button-user4 {
+			gpios = <&gpio2 24 GPIO_ACTIVE_LOW>;
+			label = "USER4";
+			linux,code = <BTN_4>;
+		};
+
+		button-user5 {
+			gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
+			label = "USER5";
+			linux,code = <BTN_5>;
+		};
+	};
+
+	lcd0: display {
+		compatible = "osddisplays,osd070t1718-19ts", "panel-dpi";
+		backlight = <&lcd_bl>;
+		enable-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
+		label = "lcd";
+
+		port {
+			lcd_in: endpoint {
+				remote-endpoint = <&dpi_out>;
+			};
+		};
+	};
+
+	lcd_bl: backlight {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 243 245 247 249 251 252 253 255>;
+		default-brightness-level = <8>;
+		pwms = <&ehrpwm1 0 50000 0>;
+	};
+};
+
+&ehrpwm1 {
+	status = "okay";
+};
+
+&epwmss1 {
+	status = "okay";
+};
+
+&i2c5 {
+	status = "okay";
+	clock-frequency = <400000>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	touchscreen@5c {
+		compatible = "pixcir,pixcir_tangoc";
+		attb-gpio = <&gpio2 4 GPIO_ACTIVE_HIGH>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
+		reg = <0x5c>;
+		reset-gpio = <&gpio2 6 GPIO_ACTIVE_HIGH>;
+		touchscreen-size-x = <1024>;
+		touchscreen-size-y = <600>;
+	};
+};
+
+&uart8 {
+	status = "okay";
+};
+
+&dss {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+
+			dpi_out: endpoint {
+				data-lines = <24>;
+				remote-endpoint = <&lcd_in>;
+			};
+		};
+	};
+};
-- 
2.39.2