arm64: dts: meson: add support for the Smartlabs SML-5442TW

The Smartlabs SML-5442TW is based on the Amlogic P231 reference design
but with the following differences:

- The Yellow and Blue LEDs are available but disabled
- The Red and Green LEDs are used to signal off/on status
- uart_AO can be accessed after opening the case; soldered pins exist
- QCA9377 instead of the usual Ampak/Broadcom module
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20200510124129.31575-4-christianshewitt@gmail.com

arch/arm64/boot/dts/amlogic/Makefile

@@ -27,6 +27,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-p212.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p230.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p231.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-phicomm-n1.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-sml5442tw.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s805x-p241.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905w-p281.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905w-tx3-mini.dtb

arch/arm64/boot/dts/amlogic/meson-gxl-s905d-sml5442tw.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) Christian Hewitt <christianshewitt@gmail.com>
+ */
+
+/dts-v1/;
+
+#include "meson-gxl-s905d.dtsi"
+#include "meson-gx-p23x-q20x.dtsi"
+#include <dt-bindings/leds/common.h>
+
+/ {
+	compatible = "smartlabs,sml5442tw", "amlogic,s905d", "amlogic,meson-gxl";
+	model = "SmartLabs SML-5442TW";
+
+	leds {
+		compatible = "gpio-leds";
+
+		yellow {
+			color = <LED_COLOR_ID_YELLOW>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&gpio_ao GPIOAO_6 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		blue {
+			color = <LED_COLOR_ID_BLUE>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&gpio GPIODV_28 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		green {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&gpio_ao GPIOAO_9 GPIO_ACTIVE_HIGH>;
+			default-state = "on";
+		};
+
+		red {
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&gpio GPIODV_27 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+	};
+};
+
+&ethmac {
+	status = "okay";
+	phy-mode = "rmii";
+	phy-handle = <&internal_phy>;
+};
+
+&i2c_A {
+	status = "okay";
+	pinctrl-0 = <&i2c_a_pins>;
+	pinctrl-names = "default";
+};
+
+&internal_phy {
+	pinctrl-0 = <&eth_link_led_pins>, <&eth_act_led_pins>;
+	pinctrl-names = "default";
+};
+
+/* This is connected to the Bluetooth module: */
+&uart_A {
+	status = "okay";
+	pinctrl-0 = <&uart_a_pins>, <&uart_a_cts_rts_pins>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+
+	bluetooth {
+		compatible = "qcom,qca9377-bt";
+		enable-gpios = <&gpio GPIOX_17 GPIO_ACTIVE_HIGH>;
+		max-speed = <2000000>;
+		clocks = <&wifi32k>;
+		clock-names = "lpo";
+	};
+};