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arm64: dts: renesas: eagle: add I2C0 support

PATCH New Sergei Shtylyov 1 participant 1 message Nov 16, 2017

Subsystems (2)
Device tree bindings Arm/RISC-V/Renesas architecture
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Sergei Shtylyov

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PATCH 1/1 arm64: dts: renesas: eagle: add I2C0 support

Define the Eagle board dependent part of the I2C0 device node.

The I2C0 bus is populated by ON Semiconductor PCA9653 I/O expander and Analog Devices ADV7511W HDMI transmitter (but we're only describing the former chip now).

Based on the original (and large) patch by Vladimir Barinov.

Signed-off-by Vladimir Barinov <[email protected]>
Signed-off-by Sergei Shtylyov <[email protected]>
---
 arch/arm64/boot/dts/renesas/r8a77970-eagle.dts |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
arch/arm64/boot/dts/renesas/r8a77970-eagle.dts +20 -0
Index: renesas/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
===================================================================
@@ -63,6 +63,11 @@
 		function = "avb0";
 	};
 
+	i2c0_pins: i2c0 {
+		groups = "i2c0";
+		function = "i2c0";
+	};
+
 	scif0_pins: scif0 {
 		groups = "scif0_data";
 		function = "scif0";

@@ -80,3 +85,18 @@
 
 	status = "okay";
 };
+
+&i2c0 {
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+	clock-frequency = <400000>;
+
+	io_expander: gpio at 20 {
+		compatible = "onnn,pca9654";
+		reg = <0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+};