ARM: dts: bcm2835: Add Raspberry Pi Zero

The Raspberry Pi Zero is a minified version of model A+. It's
notable there is no PWR LED and the ACT LED is inverted.
Additionally the Pi Zero is capable of the USB peripheral mode.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

2 files changed, 42 insertions, 1 deletions

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index faacd52370d2..6576e3f000c9 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -69,7 +69,8 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
         bcm2835-rpi-b-rev2.dtb \
         bcm2835-rpi-b-plus.dtb \
         bcm2835-rpi-a-plus.dtb \
-        bcm2836-rpi-2-b.dtb
+        bcm2836-rpi-2-b.dtb \
+        bcm2835-rpi-zero.dtb
 dtb-$(CONFIG_ARCH_BCM_5301X) += \
         bcm4708-asus-rt-ac56u.dtb \
         bcm4708-asus-rt-ac68u.dtb \
diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero.dts b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
new file mode 100644
index 000000000000..60e359fafc5b
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2016 Stefan Wahren <stefan.wahren@i2se.com>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+#include "bcm2835.dtsi"
+#include "bcm2835-rpi.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+        compatible = "raspberrypi,model-zero", "brcm,bcm2835";
+        model = "Raspberry Pi Zero";
+
+        leds {
+                act {
+                        gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
+                };
+        };
+};
+
+&gpio {
+        pinctrl-0 = <&gpioout &alt0 &i2s_alt0 &alt3>;
+
+        /* I2S interface */
+        i2s_alt0: i2s_alt0 {
+                brcm,pins = <18 19 20 21>;
+                brcm,function = <BCM2835_FSEL_ALT0>;
+        };
+};
+
+&hdmi {
+        hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+};