[PATCH 2/3] arm64: dts: allwinner: h616: orangepi-zero2w: add 24-pin expansion buttons and IR

[PATCH 2/3] arm64: dts: allwinner: h616: orangepi-zero2w: add 24-pin expansion buttons and IR

[Vladimir]

The optional 24-pin expansion board exposes two LRADC buttons and an IR
receiver. KEY1/KEY2 are on LRADC channel 0 (measured ~1.0 V / ~1.6 V) and are
wired to KEY_1 / KEY_ENTER; the IR receiver is on the SoC ir controller (PH10).

Tested on: OrangePi Zero 2W (Allwinner H618).

Signed-off-by: Vladimir <anykey196@gmail.com>
---
 .../allwinner/sun50i-h618-orangepi-zero2w.dts | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts b/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts
index ff9b40352..1b690e3cd 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts
@@ -10,6 +10,7 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/leds/common.h>
 
 / {
@@ -189,3 +190,31 @@ &usbphy {
 	usb1_vbus-supply = <&reg_vcc5v>;
 	status = "okay";
 };
+
+/*
+ * Buttons and IR receiver on the optional 24-pin expansion board.
+ * KEY1 -> KEY_1, KEY2 -> KEY_ENTER (LRADC channel 0).
+ */
+&lradc {
+	vref-supply = <&reg_vcc3v3>;
+	status = "okay";
+	wakeup-source;
+
+	button-1000 {
+		label = "KEY_1";
+		linux,code = <KEY_1>;
+		channel = <0>;
+		voltage = <1000000>;
+	};
+
+	button-1600 {
+		label = "KEY_ENTER";
+		linux,code = <KEY_ENTER>;
+		channel = <0>;
+		voltage = <1600000>;
+	};
+};
+
+&ir {
+	status = "okay";
+};
-- 
2.53.0

[PATCH 3/3] arm64: dts: allwinner: h616: orangepi-zero2w: add SDIO WiFi/BT (AW859A)

[Vladimir]

Enable the SDIO bus (mmc1) and power the on-board AW859A (UWE5622)
WiFi/BT combo through an mmc-pwrseq-simple that resets WL_REG_ON (PG18), with
the 3.3 V and 1.8 V supplies and the RTC 32 kHz clock.

Tested on: OrangePi Zero 2W (Allwinner H618) with the out-of-tree uwe5622 driver.

Signed-off-by: Vladimir <anykey196@gmail.com>
---
 .../allwinner/sun50i-h618-orangepi-zero2w.dts | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts b/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts
index 1b690e3cd..3ec060228 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero2w.dts
@@ -218,3 +218,43 @@ button-1600 {
 &ir {
 	status = "okay";
 };
+
+/ {
+	reg_vcc33_wifi: vcc33-wifi {
+		/* Always-on 3.3V regulator for WiFi and BT */
+		compatible = "regulator-fixed";
+		regulator-name = "vcc33-wifi";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		vin-supply = <&reg_vcc5v>;
+	};
+
+	reg_vcc_wifi_io: vcc-wifi-io {
+		/* Always-on 1.8V regulator for WiFi and BT IO */
+		compatible = "regulator-fixed";
+		regulator-name = "vcc-wifi-io";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+		vin-supply = <&reg_vcc33_wifi>;
+	};
+
+	wifi_pwrseq: wifi-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		clocks = <&rtc 1>;
+		clock-names = "osc32k-out";
+		reset-gpios = <&pio 6 18 GPIO_ACTIVE_LOW>;	/* PG18 */
+		post-power-on-delay-ms = <200>;
+	};
+};
+
+&mmc1 {
+	vmmc-supply = <&reg_vcc33_wifi>;
+	vqmmc-supply = <&reg_vcc_wifi_io>;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	bus-width = <4>;
+	non-removable;
+	mmc-ddr-1_8v;
+	status = "okay";
+};
-- 
2.53.0