From: Wolfram Sang <wsa+rene...@sang-engineering.com>

Create a seperate bus for HDMI related I2C slaves and assign it
to a i2c-gpio master. It can be switched to the i2c-rcar or
i2c-sh_mobile core at runtime.

Signed-off-by: Wolfram Sang <wsa+rene...@sang-engineering.com>
---
 arch/arm/boot/dts/r8a7790-lager.dts | 141 ++++++++++++++++++++++--------------
 1 file changed, 88 insertions(+), 53 deletions(-)

diff --git a/arch/arm/boot/dts/r8a7790-lager.dts 
b/arch/arm/boot/dts/r8a7790-lager.dts
index c553abd711eeb3..d8f0ca8e094dad 100644
--- a/arch/arm/boot/dts/r8a7790-lager.dts
+++ b/arch/arm/boot/dts/r8a7790-lager.dts
@@ -49,6 +49,8 @@
        aliases {
                serial0 = &scifa0;
                serial1 = &scifa1;
+               i2c8 = &i2chdmi;
+               i2c9 = &gpioi2c;
        };
 
        chosen {
@@ -252,6 +254,79 @@
                #clock-cells = <0>;
                clock-frequency = <148500000>;
        };
+
+
+       gpioi2c: i2c@9 {
+               #address-cells = <1>;
+               #size-cells = <0>;
+               compatible = "i2c-gpio";
+               status = "disabled";
+               gpios = <&gpio5 6 GPIO_ACTIVE_HIGH /* sda */
+                        &gpio5 5 GPIO_ACTIVE_HIGH /* scl */
+                       >;
+               i2c-gpio,delay-us = <5>;
+       };
+
+       i2chdmi: i2c@8 {
+
+               compatible = "i2c-demux-pinctrl";
+               i2c-parent = <&gpioi2c>, <&iic2>, <&i2c2>;
+               i2c-bus-name = "i2c-hdmi";
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               ak4643: sound-codec@12 {
+                       compatible = "asahi-kasei,ak4643";
+
+                       #sound-dai-cells = <0>;
+                       reg = <0x12>;
+               };
+
+               composite-in@20 {
+                       compatible = "adi,adv7180";
+                       reg = <0x20>;
+                       remote = <&vin1>;
+
+                       port {
+                               adv7180: endpoint {
+                                       bus-width = <8>;
+                                       remote-endpoint = <&vin1ep0>;
+                               };
+                       };
+               };
+
+               hdmi@39 {
+                       compatible = "adi,adv7511w";
+                       reg = <0x39>;
+                       interrupt-parent = <&gpio1>;
+                       interrupts = <15 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_lvds0>;
+                                       };
+                               };
+
+                               port@1 {
+                                       reg = <1>;
+                                       adv7511_out: endpoint {
+                                               remote-endpoint = <&hdmi_con>;
+                                       };
+                               };
+                       };
+               };
+       };
 };
 
 &du {
@@ -352,6 +427,11 @@
                renesas,function = "iic1";
        };
 
+       i2c2_pins: i2c2 {
+               renesas,groups = "i2c2";
+               renesas,function = "i2c2";
+       };
+
        iic2_pins: iic2 {
                renesas,groups = "iic2";
                renesas,function = "iic2";
@@ -532,63 +612,18 @@
        pinctrl-names = "default";
 };
 
-&iic2  {
-       status = "okay";
-       pinctrl-0 = <&iic2_pins>;
-       pinctrl-names = "default";
+&i2c2  {
+       pinctrl-0 = <&i2c2_pins>;
+       pinctrl-names = "i2c-hdmi";
 
        clock-frequency = <100000>;
+};
 
-       ak4643: codec@12 {
-               compatible = "asahi-kasei,ak4643";
-               #sound-dai-cells = <0>;
-               reg = <0x12>;
-       };
-
-       composite-in@20 {
-               compatible = "adi,adv7180";
-               reg = <0x20>;
-               remote = <&vin1>;
-
-               port {
-                       adv7180: endpoint {
-                               bus-width = <8>;
-                               remote-endpoint = <&vin1ep0>;
-                       };
-               };
-       };
-
-       hdmi@39 {
-               compatible = "adi,adv7511w";
-               reg = <0x39>;
-               interrupt-parent = <&gpio1>;
-               interrupts = <15 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_lvds0>;
-                               };
-                       };
+&iic2  {
+       pinctrl-0 = <&iic2_pins>;
+       pinctrl-names = "i2c-hdmi";
 
-                       port@1 {
-                               reg = <1>;
-                               adv7511_out: endpoint {
-                                       remote-endpoint = <&hdmi_con>;
-                               };
-                       };
-               };
-       };
+       clock-frequency = <100000>;
 };
 
 &iic3 {
-- 
2.1.4

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