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-rw-r--r--target/linux/brcm2708/patches-4.4/0175-Remove-I2S-config-from-bt_pins.patch38
1 files changed, 38 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0175-Remove-I2S-config-from-bt_pins.patch b/target/linux/brcm2708/patches-4.4/0175-Remove-I2S-config-from-bt_pins.patch
new file mode 100644
index 0000000000..7c1d01d604
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0175-Remove-I2S-config-from-bt_pins.patch
@@ -0,0 +1,38 @@
+From eb4d55c34018bbb92808264217a0b2857d2b2ae6 Mon Sep 17 00:00:00 2001
+From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
+Date: Fri, 11 Mar 2016 11:44:35 +0000
+Subject: [PATCH 175/232] Remove I2S config from bt_pins.
+
+Remove I2S config from bt_pins. Causes issues with clock alignment when I2S is
+used by an external DAC via GPIO header.
+---
+ arch/arm/boot/dts/bcm2710-rpi-3-b.dts | 6 +++---
+ arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts | 2 +-
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+@@ -45,9 +45,9 @@
+ };
+
+ bt_pins: bt_pins {
+- brcm,pins = <28 29 30 31 43>;
+- brcm,function = <6 6 6 6 4>; /* alt2:PCM alt0:GPCLK2 */
+- brcm,pull = <0 0 0 0 0>;
++ brcm,pins = <43>;
++ brcm,function = <4>; /* alt0:GPCLK2 */
++ brcm,pull = <0>;
+ };
+
+ uart0_pins: uart0_pins {
+--- a/arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
++++ b/arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
+@@ -29,7 +29,7 @@
+ target = <&uart1>;
+ __overlay__ {
+ pinctrl-names = "default";
+- pinctrl-0 = <&uart1_pins>;
++ pinctrl-0 = <&uart1_pins &bt_pins>;
+ status = "okay";
+ };
+ };