X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0166-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch;fp=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0166-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch;h=6e81c149d83c52fb207e8a2afb7cc939e7afbd40;hb=67dcc43f3a22dc3a7ac07a7065971b426feeb043;hp=0000000000000000000000000000000000000000;hpb=47a93a810f78adce5a130d287f82b28e9b54313c;p=openwrt%2Fstaging%2Fchunkeey.git

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
index 0000000000..6e81c149d8
--- /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";
+ 	};
+ };