diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0162-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0162-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0162-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch b/target/linux/bcm27xx/patches-4.19/950-0162-overlays-uart0-return-GPIOs-14-and-15-to-inputs.patch new file mode 100644 index 0000000000..6e81c149d8 --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0162-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"; + }; + }; |