arm64: dts: mediatek: Add spherion-rev4

Add a devicetree for rev4 of Spherion. It uses the rt5682s audio codec
instead of the rt5682 used in the previous revision.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230721201705.387426-6-nfraprado@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Author: nfraprado

arch/arm64/boot/dts/mediatek/Makefile

@@ -47,6 +47,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-hayato-r1.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-hayato-r5-sku2.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-spherion-r0.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-spherion-r4.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8195-cherry-tomato-r1.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8195-cherry-tomato-r2.dtb

arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r4.dts

@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright 2022 Google LLC
+ */
+/dts-v1/;
+#include "mt8192-asurada.dtsi"
+#include <dt-bindings/leds/common.h>
+
+/ {
+	model = "Google Spherion (rev4)";
+	compatible = "google,spherion-rev4", "google,spherion",
+		     "mediatek,mt8192";
+
+	pwmleds {
+		compatible = "pwm-leds";
+
+		led {
+			function = LED_FUNCTION_KBD_BACKLIGHT;
+			color = <LED_COLOR_ID_WHITE>;
+			pwms = <&cros_ec_pwm 0>;
+			max-brightness = <1023>;
+		};
+	};
+};
+
+&cros_ec_pwm {
+	status = "okay";
+};
+
+&keyboard_controller {
+	function-row-physmap = <
+		MATRIX_KEY(0x00, 0x02, 0)	/* T1 */
+		MATRIX_KEY(0x03, 0x02, 0)	/* T2 */
+		MATRIX_KEY(0x02, 0x02, 0)	/* T3 */
+		MATRIX_KEY(0x01, 0x02, 0)	/* T4 */
+		MATRIX_KEY(0x03, 0x04, 0)	/* T5 */
+		MATRIX_KEY(0x02, 0x04, 0)	/* T6 */
+		MATRIX_KEY(0x01, 0x04, 0)	/* T7 */
+		MATRIX_KEY(0x02, 0x09, 0)	/* T8 */
+		MATRIX_KEY(0x01, 0x09, 0)	/* T9 */
+		MATRIX_KEY(0x00, 0x04, 0)	/* T10 */
+	>;
+	linux,keymap = <
+		MATRIX_KEY(0x00, 0x02, KEY_BACK)
+		MATRIX_KEY(0x03, 0x02, KEY_REFRESH)
+		MATRIX_KEY(0x02, 0x02, KEY_FULL_SCREEN)
+		MATRIX_KEY(0x01, 0x02, KEY_SCALE)
+		MATRIX_KEY(0x03, 0x04, KEY_SYSRQ)
+		MATRIX_KEY(0x02, 0x04, KEY_BRIGHTNESSDOWN)
+		MATRIX_KEY(0x01, 0x04, KEY_BRIGHTNESSUP)
+		MATRIX_KEY(0x02, 0x09, KEY_MUTE)
+		MATRIX_KEY(0x01, 0x09, KEY_VOLUMEDOWN)
+		MATRIX_KEY(0x00, 0x04, KEY_VOLUMEUP)
+
+		CROS_STD_MAIN_KEYMAP
+	>;
+};
+
+&rt5682 {
+	compatible = "realtek,rt5682s";
+};
+
+&sound {
+	compatible = "mediatek,mt8192_mt6359_rt1015p_rt5682s";
+
+	speaker-codecs {
+		sound-dai = <&rt1015p>;
+	};
+
+	headset-codec {
+		sound-dai = <&rt5682 0>;
+	};
+};
+
+&touchscreen {
+	compatible = "elan,ekth3500";
+};