[PATCH 4/4] arm64: dts: cix: add RTS5453 PD controllers to Orion O6

[Gary Yang <gary.yang@cixtech.com>]

Describe the two Realtek RTS5453H port controllers on the Orion O6
I2C1 bus and add the I2C1 pin configuration.

The controllers route orientation and DisplayPort mode changes
through the USB/DP combo PHY lane switches, but that PHY support is
not upstream yet, so the connector graph endpoints are left out for
now. The Type-C ports are still registered and reported, only the
lane switching is deferred until the PHY nodes are available.

Both controllers report through the same level-triggered interrupt
line, which the driver handles with a shared interrupt. The I2C bus
runs at 100 kHz because the RTS5453H I2C interface does not support
higher rates.

Signed-off-by: Gary Yang <gary.yang@cixtech.com>
---
 arch/arm64/boot/dts/cix/sky1-orion-o6.dts | 51 +++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/arch/arm64/boot/dts/cix/sky1-orion-o6.dts b/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
index e39c87774c12..53c66ab30679 100644
--- a/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
+++ b/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
@@ -52,6 +52,48 @@ &fch_gpio3 {
 	status = "okay";
 };
 
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_fch_i2c1>;
+	clock-frequency = <100000>;
+
+	status = "okay";
+
+	typec@30 {
+		compatible = "realtek,rts5453h";
+		reg = <0x30>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		interrupt-parent = <&s5_gpio0>;
+		interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
+
+		connector@0 {
+			compatible = "usb-c-connector";
+			reg = <0>;
+			data-role = "host";
+			power-role = "source";
+			try-power-role = "source";
+		};
+	};
+
+	typec@31 {
+		compatible = "realtek,rts5453h";
+		reg = <0x31>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		interrupt-parent = <&s5_gpio0>;
+		interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
+
+		connector@2 {
+			compatible = "usb-c-connector";
+			reg = <2>;
+			data-role = "host";
+			power-role = "source";
+			try-power-role = "source";
+		};
+	};
+};
+
 &iomuxc {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_hog>;
@@ -66,6 +108,15 @@ pins {
 			drive-strength = <8>;
 		};
 	};
+
+	pinctrl_fch_i2c1: i2c1-cfg {
+		pins {
+			pinmux = <CIX_PAD_I2C1_CLK_FUNC_I2C1_CLK>,
+				<CIX_PAD_I2C1_SDA_FUNC_I2C1_SDA>;
+			bias-pull-up;
+			drive-strength = <12>;
+		};
+	};
 };
 
 &iomuxc_s5 {
-- 
2.50.1