Create a separate bus for HDMI related I2C1 and provide fallback to GPIO. Based on work for the r8a7790/lager by Wolfram Sang.
Cc: Wolfram Sang <[email protected]> Signed-off-by: Simon Horman <[email protected]> --- v3 * New patch * Compile tested only --- arch/arm/boot/dts/r8a7794-silk.dts | 117 ++++++++++++++++++++++--------------- 1 file changed, 70 insertions(+), 47 deletions(-) diff --git a/arch/arm/boot/dts/r8a7794-silk.dts b/arch/arm/boot/dts/r8a7794-silk.dts index cf24f45fff22..b1beb22cb980 100644 --- a/arch/arm/boot/dts/r8a7794-silk.dts +++ b/arch/arm/boot/dts/r8a7794-silk.dts @@ -20,6 +20,8 @@ aliases { serial0 = &scif2; + i2c9 = "gpioi2c1"; + i2c10 = "i2chdmi"; }; chosen { @@ -119,6 +121,73 @@ #clock-cells = <0>; clock-frequency = <74250000>; }; + + gpioi2c1: i2c-9 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "i2c-gpio"; + status = "disabled"; + gpios = <&gpio4 1 GPIO_ACTIVE_HIGH /* sda */ + &gpio4 0 GPIO_ACTIVE_HIGH /* scl */ + >; + i2c-gpio,delay-us = <5>; + }; + + /* + * A fallback to GPIO is provided for I2C1. + */ + i2chdmi: i2c-10 { + compatible = "i2c-demux-pinctrl"; + i2c-parent = <&i2c1>, <&gpioi2c1>; + i2c-bus-name = "i2c-hdmi"; + #address-cells = <1>; + #size-cells = <0>; + + 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 = <&gpio5>; + interrupts = <23 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_rgb0>; + }; + }; + + port@1 { + reg = <1>; + adv7511_out: endpoint { + remote-endpoint = <&hdmi_con>; + }; + }; + }; + }; + }; }; &extal_clk { @@ -225,55 +294,9 @@ &i2c1 { pinctrl-0 = <&i2c1_pins>; - pinctrl-names = "default"; + pinctrl-names = "i2c-hdmi"; - status = "okay"; clock-frequency = <400000>; - - 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 = <&gpio5>; - interrupts = <23 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_rgb0>; - }; - }; - - port@1 { - reg = <1>; - adv7511_out: endpoint { - remote-endpoint = <&hdmi_con>; - }; - }; - }; - }; }; &mmcif0 { -- 2.1.4
