46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
From d24bb9c4b5d3b0bb2bd5dd922bae3fce894ab87e Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Tue, 1 Oct 2019 10:19:50 +0100
|
|
Subject: [PATCH] overlays: Remove hack from uart0 overlay
|
|
|
|
The uart0 overlay contained a hack to return GPIOs 14 and 15 to inputs
|
|
when the UART0 function was moved to alternative pins. This has the
|
|
unwanted side effect of claiming GPIOs 14 & 15, preventing them being
|
|
used for something else.
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/2856
|
|
https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=252911
|
|
|
|
Signed-off-by: Stefan Enge <stefan.enge@escatec.com>
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
arch/arm/boot/dts/overlays/uart0-overlay.dts | 13 ++++++-------
|
|
1 file changed, 6 insertions(+), 7 deletions(-)
|
|
|
|
--- a/arch/arm/boot/dts/overlays/uart0-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/uart0-overlay.dts
|
|
@@ -17,17 +17,16 @@
|
|
target = <&gpio>;
|
|
__overlay__ {
|
|
uart0_pins: uart0_pins {
|
|
- brcm,pins = <14 15 14 15>;
|
|
- brcm,function = <0 0 4 4>; /* alt0 */
|
|
- brcm,pull = <0 0 0 2>;
|
|
+ brcm,pins = <14 15>;
|
|
+ brcm,function = <4>; /* alt0 */
|
|
+ brcm,pull = <0 2>;
|
|
};
|
|
};
|
|
};
|
|
|
|
__overrides__ {
|
|
- 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";
|
|
+ txd0_pin = <&uart0_pins>,"brcm,pins:0";
|
|
+ rxd0_pin = <&uart0_pins>,"brcm,pins:4";
|
|
+ pin_func = <&uart0_pins>,"brcm,function:0";
|
|
};
|
|
};
|