brcm2708: organize kernel patches

[openwrt/staging/chunkeey.git] / target / linux / brcm2708 / patches-4.19 / 950-0166-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0166-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch b/target/linux/brcm2708/patches-4.19/950-0166-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch
new file mode 100644 (file)
index 0000000..6e81c14
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0166-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch
@@ -0,0 +1,42 @@
+From 627f981e148bb9f7dc01df97fa20fe6124f417f7 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 7 Nov 2018 17:43:10 +0000
+Subject: [PATCH] overlays: uart0 - return GPIOs 14 and 15 to inputs
+
+In the event that alternate pins are used (only useful on Compute
+Modules), return the standard pins to inputs to avoid double-mapping
+them.
+
+See: https://www.raspberrypi.org/forums/viewtopic.php?p=1388713#p1316977
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/uart0-overlay.dts | 13 +++++++------
+ 1 file changed, 7 insertions(+), 6 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/uart0-overlay.dts
++++ b/arch/arm/boot/dts/overlays/uart0-overlay.dts
+@@ -17,16 +17,17 @@
+               target = <&gpio>;
+               __overlay__ {
+                       uart0_pins: uart0_pins {
+-                              brcm,pins = <14 15>;
+-                              brcm,function = <4>; /* alt0 */
+-                              brcm,pull = <0 2>;
++                              brcm,pins = <14 15 14 15>;
++                              brcm,function = <0 0 4 4>; /* alt0 */
++                              brcm,pull = <0 0 0 2>;
+                       };
+               };
+       };
+ 
+       __overrides__ {
+-              txd0_pin = <&uart0_pins>,"brcm,pins:0";
+-              rxd0_pin = <&uart0_pins>,"brcm,pins:4";
+-              pin_func = <&uart0_pins>,"brcm,function:0";
++              txd0_pin = <&uart0_pins>,"brcm,pins:8";
++              rxd0_pin = <&uart0_pins>,"brcm,pins:12";
++              pin_func = <&uart0_pins>,"brcm,function:8",
++                         <&uart0_pins>,"brcm,function:12";
+       };
+ };