arm64: dts: meson: add support for the WeTek Core 2

The WeTek Core2 is a commercial device based on the Amlogic Q200 reference
design but with the following differences:

- 3GB RAM, 32GB eMMC
- Blue and Red LEDs used to signal on/off status
- uart_AO can be accessed after opening the case; soldering required
- USB OTG is not accessible (inside the case)
- Realtek RTL8152 Ethernet (internal USB connection)

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20200719021421.7959-3-christianshewitt@gmail.com

diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index 5cac4d1..4e2239f 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -41,6 +41,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxm-q201.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-rbox-pro.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-s912-libretech-pc.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-vega-s96.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-gxm-wetek-core2.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-sm1-sei610.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-sm1-khadas-vim3l.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-sm1-odroid-c4.dtb

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-wetek-core2.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-wetek-core2.dts
new file mode 100644 (file)
index 0000000..ec794c1
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm-wetek-core2.dts
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2020 Christian Hewitt <christianshewitt@gmail.com>
+ */
+
+/dts-v1/;
+
+#include "meson-gxm.dtsi"
+#include "meson-gx-p23x-q20x.dtsi"
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+       compatible = "wetek,core2", "amlogic,s912", "amlogic,meson-gxm";
+       model = "WeTek Core 2";
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x0 0x0 0x80000000>; /* 2 GiB or 3 GiB */
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               blue {
+                       color = <LED_COLOR_ID_BLUE>;
+                       function = LED_FUNCTION_STATUS;
+                       gpios = <&gpio GPIODV_24 GPIO_ACTIVE_HIGH>;
+                       default-state = "on";
+               };
+       };
+
+       adc-keys {
+               compatible = "adc-keys";
+               io-channels = <&saradc 0>;
+               io-channel-names = "buttons";
+               keyup-threshold-microvolt = <1710000>;
+
+               button-update {
+                       label = "update";
+                       linux,code = <KEY_VENDOR>;
+                       press-threshold-microvolt = <10000>;
+               };
+       };
+
+       gpio-keys-polled {
+               compatible = "gpio-keys-polled";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               poll-interval = <100>;
+
+               button-power {
+                       label = "power";
+                       linux,code = <KEY_POWER>;
+                       gpios = <&gpio_ao GPIOAO_2 GPIO_ACTIVE_LOW>;
+               };
+       };
+};
+
+/* Disabled as Realtek RTL8152 USB provides Ethernet */
+&ethmac {
+       status = "disabled";
+};
+
+&internal_phy {
+       status = "disabled";
+};
+
+&ir {
+       linux,rc-map-name = "rc-wetek-play2";
+};
+
+/* 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 = "brcm,bcm43438-bt";
+               shutdown-gpios = <&gpio GPIOX_17 GPIO_ACTIVE_HIGH>;
+               max-speed = <2000000>;
+               clocks = <&wifi32k>;
+               clock-names = "lpo";
+       };
+};