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ARM: dts: lager: use demuxer for IIC2/I2C2

Browse source 
Create a separate bus for HDMI related I2C slaves.

Based on work by Wolfram Sang.

Signed-off-by: Simon Horman <horms+renesas@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+renesas@sang-engineering.com>
This commit is contained in:
Wolfram Sang 2018-02-06 23:29:50 +01:00 • committed by Simon Horman
commit 4e65e1b672
1 changed files with 124 additions and 89 deletions
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213
arch/arm/boot/dts/r8a7790-lager.dts
View file

@ -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 +320,104 @@
#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>;
};
};
};
cec_clock: cec-clock {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <12000000>;
};
hdmi@39 {
compatible = "adi,adv7511w";
reg = <0x39>;
interrupt-parent = <&gpio1>;
interrupts = <15 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_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 +547,11 @@
function = "iic1";
};
i2c2_pins: i2c2 {
groups = "i2c2";
function = "i2c2";
};
iic2_pins: iic2 {
groups = "iic2";
function = "iic2";
@ -643,98 +758,18 @@
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>;
};
&iic2 {
pinctrl-0 = <&iic2_pins>;
pinctrl-names = "i2c-hdmi";
composite-in@20 {
compatible = "adi,adv7180";
reg = <0x20>;
remote = <&vin1>;
port {
adv7180: endpoint {
bus-width = <8>;
remote-endpoint = <&vin1ep0>;
};
};
};
cec_clock: cec-clock {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <12000000>;
};
hdmi@39 {
compatible = "adi,adv7511w";
reg = <0x39>;
interrupt-parent = <&gpio1>;
interrupts = <15 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_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>;
};
};
};
};
clock-frequency = <100000>;
};
&iic3 {