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Message-Id: <1414457566-31802-1-git-send-email-matthias.klein@linux.com>
Date: Tue, 28 Oct 2014 01:52:46 +0100
From: Matthias Klein <matthias.klein@...ux.com>
To: linux-rpi-kernel@...ts.infradead.org, swarren@...dotorg.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: bcm2835: add device tree for Raspberry Pi model B+
The model B and B+ differ in the GPIO lines for ACT and PWR led.
The PWR led on the B+ model is active low.
Signed-off-by: Matthias Klein <matthias.klein@...ux.com>
---
arch/arm/boot/dts/bcm2835-rpi-b-plus.dts | 64 ++++++++++++++++++++++++++++++++
1 file changed, 64 insertions(+)
create mode 100644 arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
new file mode 100644
index 0000000..c01d7cb
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
@@ -0,0 +1,64 @@
+/dts-v1/;
+/include/ "bcm2835.dtsi"
+
+/ {
+ compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
+ model = "Raspberry Pi Model B+";
+
+ memory {
+ reg = <0 0x10000000>;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ act {
+ label = "ACT";
+ gpios = <&gpio 47 1>;
+ default-state = "keep";
+ linux,default-trigger = "heartbeat";
+ };
+
+ pwr {
+ label = "PWR";
+ gpios = <&gpio 35 0>;
+ default-state = "keep";
+ linux,default-trigger = "default-on";
+ };
+ };
+};
+
+&gpio {
+ pinctrl-names = "default";
+ pinctrl-0 = <&gpioout &alt0 &alt3>;
+
+ gpioout: gpioout {
+ brcm,pins = <6>;
+ brcm,function = <1>; /* GPIO out */
+ };
+
+ alt0: alt0 {
+ brcm,pins = <0 1 2 3 4 5 7 8 9 10 11 14 15 40 45>;
+ brcm,function = <4>; /* alt0 */
+ };
+
+ alt3: alt3 {
+ brcm,pins = <48 49 50 51 52 53>;
+ brcm,function = <7>; /* alt3 */
+ };
+};
+
+&i2c0 {
+ status = "okay";
+ clock-frequency = <100000>;
+};
+
+&i2c1 {
+ status = "okay";
+ clock-frequency = <100000>;
+};
+
+&mmc {
+ status = "okay";
+ bus-width = <4>;
+};
--
2.1.2
--
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