This commit is not intended to be merged. Instead we will use overlays to enable the panel, and this commit is just a demo of how things get wired up.
Signed-off-by: Eric Anholt eric@anholt.net --- arch/arm/boot/dts/bcm283x.dtsi | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/bcm283x.dtsi b/arch/arm/boot/dts/bcm283x.dtsi index 82a4eccfb3d8..e96d0f29759a 100644 --- a/arch/arm/boot/dts/bcm283x.dtsi +++ b/arch/arm/boot/dts/bcm283x.dtsi @@ -286,7 +286,12 @@ "dsi1_ddr2", "dsi1_ddr";
- status = "disabled"; + pitouchscreen: panel@0 { + compatible = "raspberrypi,touchscreen"; + reg = <0>; + + raspberrypi,touchscreen-bridge = <&pitouchscreen_bridge>; + }; };
i2c1: i2c@7e804000 { @@ -346,6 +351,29 @@ vc4: gpu { compatible = "brcm,bcm2835-vc4"; }; + + i2c_dsi: i2c { + /* We have to use i2c-gpio because the + * firmware is also polling another device + * using the only hardware I2C bus that could + * connect to these pins. + */ + compatible = "i2c-gpio"; + #address-cells = <1>; + #size-cells = <0>; + gpios = <&gpio 28 0 + &gpio 29 0>; + + pitouchscreen_bridge: bridge@45 { + compatible = "raspberrypi,touchscreen-bridge-i2c"; + reg = <0x45>; + }; + + pitouchscreen_touch: bridge@38 { + compatible = "raspberrypi,touchscreen-ts-i2c"; + reg = <0x38>; + }; + }; };
clocks {