Create a separate bus for HDMI related I2C slaves.
Based on work by Wolfram Sang.
Signed-off-by: Simon Horman <horms+rene...@verge.net.au>
[wsa: rebased, removed typo in comment, fixed aliases, switched to
named GPIOS, sort SCL pins first]
Signed-off-by: Wolfram Sang <wsa+rene...@sang-engineering.com>
---
arch/arm/boot/dts/r8a7790-lager.dts | 197 +++++++++++++++++++++---------------
1 file changed, 116 insertions(+), 81 deletions(-)
diff --git a/arch/arm/boot/dts/r8a7790-lager.dts
b/arch/arm/boot/dts/r8a7790-lager.dts
index f2ea632381e7d1..e4050dae7e8e33 100644
--- a/arch/arm/boot/dts/r8a7790-lager.dts
+++ b/arch/arm/boot/dts/r8a7790-lager.dts
@@ -51,8 +51,10 @@
serial0 = &scif0;
serial1 = &scifa1;
i2c8 = &gpioi2c1;
+ i2c9 = &gpioi2c2;
i2c10 = &i2cexio0;
i2c11 = &i2cexio1;
+ i2c12 = &i2chdmi;
};
chosen {
@@ -272,8 +274,18 @@
#size-cells = <0>;
compatible = "i2c-gpio";
status = "disabled";
- sda-gpios = <&gpio1 17 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
scl-gpios = <&gpio1 16 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ sda-gpios = <&gpio1 17 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ i2c-gpio,delay-us = <5>;
+ };
+
+ gpioi2c2: i2c-9 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "i2c-gpio";
+ status = "disabled";
+ scl-gpios = <&gpio5 5 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ sda-gpios = <&gpio5 6 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
i2c-gpio,delay-us = <5>;
};
@@ -308,6 +320,96 @@
#address-cells = <1>;
#size-cells = <0>;
};
+
+ /*
+ * IIC2 and I2C2 may be switched using pinmux.
+ * A fallback to GPIO is also provided.
+ */
+ i2chdmi: i2c-12 {
+ compatible = "i2c-demux-pinctrl";
+ i2c-parent = <&iic2>, <&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 = <&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_out>;
+ };
+ };
+ };
+ };
+
+ hdmi-in@4c {
+ compatible = "adi,adv7612";
+ reg = <0x4c>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <20 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>;
+ };
+ };
+ };
+ };
+ };
};
&du {
@@ -437,6 +539,11 @@
function = "iic1";
};
+ i2c2_pins: i2c2 {
+ groups = "i2c2";
+ function = "i2c2";
+ };
+
iic2_pins: iic2 {
groups = "iic2";
function = "iic2";
@@ -643,90 +750,18 @@
pinctrl-names = "i2c-exio1";
};
-&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>;
- };
- };
-
- port@1 {
- reg = <1>;
- adv7511_out: endpoint {
- remote-endpoint = <&hdmi_con_out>;
- };
- };
- };
- };
-
- hdmi-in@4c {
- compatible = "adi,adv7612";
- reg = <0x4c>;
- interrupt-parent = <&gpio1>;
- interrupts = <20 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>;
- };
- };
+&iic2 {
+ pinctrl-0 = <&iic2_pins>;
+ pinctrl-names = "i2c-hdmi";
- port@2 {
- reg = <2>;
- adv7612_out: endpoint {
- remote-endpoint = <&vin0ep2>;
- };
- };
- };
- };
+ clock-frequency = <100000>;
};
&iic3 {
--
2.11.0
