linux-kernel - [PATCH v3 6/7] ARM: bcm2835: Add the DDC I2C controller to the device tree.

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Date:	Fri,  9 Oct 2015 14:27:47 -0700
From:	Eric Anholt <eric@...olt.net>
To:	dri-devel@...ts.freedesktop.org
Cc:	linux-arm-kernel@...ts.infradead.org,
	linux-rpi-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Stephen Warren <swarren@...dotorg.org>,
	Lee Jones <lee@...nel.org>, devicetree@...r.kernel.org,
	Eric Anholt <eric@...olt.net>
Subject: [PATCH v3 6/7] ARM: bcm2835: Add the DDC I2C controller to the device tree.

We need to use it for getting video modes over HDMI.

Signed-off-by: Eric Anholt <eric@...olt.net>
Acked-by: Stephen Warren <swarren@...dotorg.org>
---

v2: Mark it as disabled by default, and enable it in bcm2835-rpi.

 arch/arm/boot/dts/bcm2835-rpi.dtsi |  4 ++++
 arch/arm/boot/dts/bcm2835.dtsi     | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index ab5474e..3572f03 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -52,6 +52,10 @@
 	clock-frequency = <100000>;
 };
 
+&i2c2 {
+	status = "okay";
+};
+
 &sdhci {
 	status = "okay";
 	bus-width = <4>;
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
index a6a55b7..1e61eb7 100644
--- a/arch/arm/boot/dts/bcm2835.dtsi
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -167,6 +167,16 @@
 			status = "disabled";
 		};
 
+		i2c2: i2c@...05000 {
+			compatible = "brcm,bcm2835-i2c";
+			reg = <0x7e805000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clocks BCM2835_CLOCK_VPU>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		usb@...80000 {
 			compatible = "brcm,bcm2835-usb";
 			reg = <0x7e980000 0x10000>;
-- 
2.1.4

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