From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Eric Anholt To: Florian Fainelli , Michael Turquette , Stephen Boyd , Rob Herring , Mark Rutland , dri-devel@lists.freedesktop.org, Thierry Reding Cc: linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stephen Warren , Lee Jones , bcm-kernel-feedback-list@broadcom.com, linux-clk@vger.kernel.org, Eric Anholt Subject: [PATCH 11/11] ARM: bcm2835: Enable the Raspberry Pi touchscreen panel. Date: Wed, 14 Dec 2016 11:46:21 -0800 Message-Id: <20161214194621.16499-12-eric@anholt.net> In-Reply-To: <20161214194621.16499-1-eric@anholt.net> References: <20161214194621.16499-1-eric@anholt.net> List-ID: 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 --- 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 { -- 2.11.0