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+rene...@verge.net.au>
[wsa: rebased, fixed aliases, switched to named GPIOs, sorted by SCL
pins]
Signed-off-by: Wolfram Sang <wsa+rene...@sang-engineering.com>
---
arch/arm/boot/dts/r8a7791-koelsch.dts | 200 +++++++++++++++++++---------------
1 file changed, 111 insertions(+), 89 deletions(-)
diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts
b/arch/arm/boot/dts/r8a7791-koelsch.dts
index a50924d12b6f37..4b20db197de629 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
@@ -51,7 +51,9 @@
serial0 = &scif0;
serial1 = &scif1;
i2c9 = &gpioi2c1;
+ i2c10 = &gpioi2c2;
i2c12 = &i2cexio1;
+ i2c13 = &i2chdmi;
};
chosen {
@@ -312,8 +314,18 @@
#size-cells = <0>;
compatible = "i2c-gpio";
status = "disabled";
- sda-gpios = <&gpio7 16 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
scl-gpios = <&gpio7 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ sda-gpios = <&gpio7 16 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ i2c-gpio,delay-us = <5>;
+ };
+
+ gpioi2c2: i2c-10 {
+ #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>;
};
@@ -328,6 +340,103 @@
#address-cells = <1>;
#size-cells = <0>;
};
+
+ /*
+ * A fallback to GPIO is provided for I2C2.
+ */
+ i2chdmi: i2c-13 {
+ compatible = "i2c-demux-pinctrl";
+ i2c-parent = <&i2c2>, <&gpioi2c2>;
+ i2c-bus-name = "i2c-hdmi";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ 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 = <&vin1ep>;
+ };
+ };
+ };
+
+ hdmi@39 {
+ compatible = "adi,adv7511w";
+ reg = <0x39>;
+ interrupt-parent = <&gpio3>;
+ interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&cec_clock>;
+ clock-names = "cec";
+
+ 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_out>;
+ };
+ };
+ };
+ };
+
+ hdmi-in@4c {
+ compatible = "adi,adv7612";
+ reg = <0x4c>;
+ interrupt-parent = <&gpio4>;
+ interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
+ default-input = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ adv7612_in: endpoint {
+ remote-endpoint =
<&hdmi_con_in>;
+ };
+ };
+
+ port@2 {
+ reg = <2>;
+ adv7612_out: endpoint {
+ remote-endpoint = <&vin0ep2>;
+ };
+ };
+ };
+ };
+
+ eeprom@50 {
+ compatible = "renesas,r1ex24002", "atmel,24c02";
+ reg = <0x50>;
+ pagesize = <16>;
+ };
+ };
};
&du {
@@ -621,96 +730,9 @@
&i2c2 {
pinctrl-0 = <&i2c2_pins>;
- pinctrl-names = "default";
+ pinctrl-names = "i2c-hdmi";
- status = "okay";
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 = <&vin1ep>;
- };
- };
- };
-
- hdmi@39 {
- compatible = "adi,adv7511w";
- reg = <0x39>;
- interrupt-parent = <&gpio3>;
- interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
- clocks = <&cec_clock>;
- clock-names = "cec";
-
- 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_out>;
- };
- };
- };
- };
-
- hdmi-in@4c {
- compatible = "adi,adv7612";
- reg = <0x4c>;
- interrupt-parent = <&gpio4>;
- interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
- default-input = <0>;
-
- ports {
- #address-cells = <1>;
- #size-cells = <0>;
-
- port@0 {
- reg = <0>;
- adv7612_in: endpoint {
- remote-endpoint = <&hdmi_con_in>;
- };
- };
-
- port@2 {
- reg = <2>;
- adv7612_out: endpoint {
- remote-endpoint = <&vin0ep2>;
- };
- };
- };
- };
-
- eeprom@50 {
- compatible = "renesas,r1ex24002", "atmel,24c02";
- reg = <0x50>;
- pagesize = <16>;
- };
};
&i2c6 {
--
2.11.0
