brcm2708: add linux 4.9 support

Patches from Raspberry Pi repo:
https://github.com/raspberrypi/linux/commits/rpi-4.9.y

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.9/0139-BCM270X_DT-Add-reference-to-audio_pins-to-CM-dtb.patch b/target/linux/brcm2708/patches-4.9/0139-BCM270X_DT-Add-reference-to-audio_pins-to-CM-dtb.patch
new file mode 100644
index 0000000000..ed707a1cac
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/0139-BCM270X_DT-Add-reference-to-audio_pins-to-CM-dtb.patch
@@ -0,0 +1,28 @@
+From 719ed1f8a1f93b2c9d855392a69493da107ae703 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 23 Jan 2017 17:36:50 +0000
+Subject: [PATCH] BCM270X_DT: Add reference to audio_pins to CM dtb
+
+The CM1 dtb contains an empty audio_pins node, but no reference to it.
+Adding the usual pinctrl reference from the audio node enables the
+audremap overlay (and others) to easily turn on audio.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/bcm2708-rpi-cm.dts | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2708-rpi-cm.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
+@@ -85,6 +85,11 @@
+ 	pinctrl-0 = <&i2s_pins>;
+ };
+ 
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
+ &hdmi {
+ 	hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
+ };