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[v3,2/2] arm64: dts: renesas: eagle: add I2C0 support

Message ID 30bfc66d-2bfb-4d6e-8bdc-fcd9cb9522c2@cogentembedded.com (mailing list archive)
State Accepted
Commit 7859eb31e4d457496ace72965f2fbb50e836ef12
Delegated to: Simon Horman
Headers show

Commit Message

Sergei Shtylyov March 3, 2018, 7:07 p.m. UTC 
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 <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

---
Changes in version 3:
- added Geert's tag.

Changes in version 2:
- refreshed with the patch adding EtherAVB pins removed for now...

 arch/arm64/boot/dts/renesas/r8a77970-eagle.dts |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
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Patch

Index: renesas/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
===================================================================
--- renesas.orig/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
+++ renesas/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
@@ -55,7 +55,27 @@ 
 	clock-frequency = <32768>;
 };
 
+&i2c0 {
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+	clock-frequency = <400000>;
+
+	io_expander: gpio@20 {
+		compatible = "onnn,pca9654";
+		reg = <0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+};
+
 &pfc {
+	i2c0_pins: i2c0 {
+		groups = "i2c0";
+		function = "i2c0";
+	};
+
 	scif0_pins: scif0 {
 		groups = "scif0_data";
 		function = "scif0";