arm64: dts: mediatek: asurada: Add ChromeOS EC

Add support for the ChromeOS Embedded Controller present on the Asurada
platform. It is connected through the SPI1 bus and offers several
functionalities: base detection, PWM controller, I2C tunneling,
regulators, Type-C connector management, keyboard and Smart Battery
Metrics (SBS).

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220629155956.1138955-8-nfraprado@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index 72dc974fe6fc7a8ea352a3a33b3c37fc63535d8c..07405dea4d9d6088bf9a3e247146a6ee1cef428b 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -353,6 +353,14 @@
                          "AUD_DAT_MISO0",
                          "AUD_DAT_MISO1";
 
+       cros_ec_int: cros-ec-irq-default-pins {
+               pins-ec-ap-int-odl {
+                       pinmux = <PINMUX_GPIO5__FUNC_GPIO5>;
+                       input-enable;
+                       bias-pull-up;
+               };
+       };
+
        i2c0_pins: i2c0-default-pins {
                pins-bus {
                        pinmux = <PINMUX_GPIO204__FUNC_SCL0>,
@@ -428,6 +436,74 @@
        mediatek,pad-select = <0>;
        pinctrl-names = "default";
        pinctrl-0 = <&spi1_pins>;
+
+       cros_ec: ec@0 {
+               compatible = "google,cros-ec-spi";
+               reg = <0>;
+               interrupts-extended = <&pio 5 IRQ_TYPE_LEVEL_LOW>;
+               spi-max-frequency = <3000000>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&cros_ec_int>;
+
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               base_detection: cbas {
+                       compatible = "google,cros-cbas";
+               };
+
+               cros_ec_pwm: pwm {
+                       compatible = "google,cros-ec-pwm";
+                       #pwm-cells = <1>;
+
+                       status = "disabled";
+               };
+
+               i2c_tunnel: i2c-tunnel {
+                       compatible = "google,cros-ec-i2c-tunnel";
+                       google,remote-bus = <0>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+               };
+
+               mt6360_ldo3_reg: regulator@0 {
+                       compatible = "google,cros-ec-regulator";
+                       reg = <0>;
+                       regulator-min-microvolt = <1800000>;
+                       regulator-max-microvolt = <3300000>;
+               };
+
+               mt6360_ldo5_reg: regulator@1 {
+                       compatible = "google,cros-ec-regulator";
+                       reg = <1>;
+                       regulator-min-microvolt = <3300000>;
+                       regulator-max-microvolt = <3300000>;
+               };
+
+               typec {
+                       compatible = "google,cros-ec-typec";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       usb_c0: connector@0 {
+                               compatible = "usb-c-connector";
+                               reg = <0>;
+                               label = "left";
+                               power-role = "dual";
+                               data-role = "host";
+                               try-power-role = "source";
+                       };
+
+                       usb_c1: connector@1 {
+                               compatible = "usb-c-connector";
+                               reg = <1>;
+                               label = "right";
+                               power-role = "dual";
+                               data-role = "host";
+                               try-power-role = "source";
+                       };
+               };
+       };
 };
 
 &spi5 {
@@ -442,3 +518,6 @@
 &uart0 {
        status = "okay";
 };
+
+#include <arm/cros-ec-keyboard.dtsi>
+#include <arm/cros-ec-sbs.dtsi>