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ARM: dts: porter: use demuxer for I2C2

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Create a separate bus for HDMI related I2C2 and provide fallback to GPIO.

Based on work for the r8a7790/lager by Wolfram Sang.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
[wsa: rebased, fixed aliases, switched to named GPIOs]
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
This commit is contained in:
Wolfram Sang 2018-02-06 23:29:54 +01:00 committed by Simon Horman
parent be93275c4d
commit 12937bffd6
1 changed files with 75 additions and 53 deletions
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128
arch/arm/boot/dts/r8a7791-porter.dts
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@ -29,6 +29,8 @@
aliases {
serial0 = &scif0;
i2c9 = &gpioi2c2;
i2c10 = &i2chdmi;
};
chosen {
@ -135,6 +137,78 @@
clocks = <&x14_clk>;
};
};
gpioi2c2: i2c-9 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "i2c-gpio";
status = "disabled";
scl-gpios = <&gpio2 6 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
sda-gpios = <&gpio2 7 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
i2c-gpio,delay-us = <5>;
};
/*
* A fallback to GPIO is provided for I2C2.
*/
i2chdmi: i2c-10 {
compatible = "i2c-demux-pinctrl";
i2c-parent = <&i2c2>, <&gpioi2c2>;
i2c-bus-name = "i2c-hdmi";
#address-cells = <1>;
#size-cells = <0>;
ak4642: codec@12 {
compatible = "asahi-kasei,ak4642";
#sound-dai-cells = <0>;
reg = <0x12>;
};
composite-in@20 {
compatible = "adi,adv7180";
reg = <0x20>;
remote = <&vin0>;
port {
adv7180: endpoint {
bus-width = <8>;
remote-endpoint = <&vin0ep>;
};
};
};
hdmi@39 {
compatible = "adi,adv7511w";
reg = <0x39>;
interrupt-parent = <&gpio3>;
interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
adi,input-depth = <8>;
adi,input-colorspace = "rgb";
adi,input-clock = "1x";
adi,input-style = <1>;
adi,input-justification = "evenly";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
adv7511_in: endpoint {
remote-endpoint = <&du_out_rgb>;
};
};
port@1 {
reg = <1>;
adv7511_out: endpoint {
remote-endpoint = <&hdmi_con>;
};
};
};
};
};
};
&extal_clk {
@ -296,61 +370,9 @@
&i2c2 {
pinctrl-0 = <&i2c2_pins>;
pinctrl-names = "default";
pinctrl-names = "i2c-hdmi";
status = "okay";
clock-frequency = <400000>;
ak4642: codec@12 {
compatible = "asahi-kasei,ak4642";
#sound-dai-cells = <0>;
reg = <0x12>;
};
composite-in@20 {
compatible = "adi,adv7180";
reg = <0x20>;
remote = <&vin0>;
port {
adv7180: endpoint {
bus-width = <8>;
remote-endpoint = <&vin0ep>;
};
};
};
hdmi@39 {
compatible = "adi,adv7511w";
reg = <0x39>;
interrupt-parent = <&gpio3>;
interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
adi,input-depth = <8>;
adi,input-colorspace = "rgb";
adi,input-clock = "1x";
adi,input-style = <1>;
adi,input-justification = "evenly";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
adv7511_in: endpoint {
remote-endpoint = <&du_out_rgb>;
};
};
port@1 {
reg = <1>;
adv7511_out: endpoint {
remote-endpoint = <&hdmi_con>;
};
};
};
};
};
&sata0 {