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(+) 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 @@ -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@20 { + compatible = "onnn,pca9654"; + reg = <0x20>; + gpio-controller; + #gpio-cells = <2>; + }; +};
