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62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
From d24bb9c4b5d3b0bb2bd5dd922bae3fce894ab87e Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Tue, 1 Oct 2019 10:19:50 +0100
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Subject: [PATCH] overlays: Remove hack from uart0 overlay
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The uart0 overlay contained a hack to return GPIOs 14 and 15 to inputs
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when the UART0 function was moved to alternative pins. This has the
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unwanted side effect of claiming GPIOs 14 & 15, preventing them being
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used for something else.
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See: https://github.com/raspberrypi/linux/issues/2856
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https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=252911
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Signed-off-by: Stefan Enge <stefan.enge@escatec.com>
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/uart0-overlay.dts | 13 ++++++-------
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1 file changed, 6 insertions(+), 7 deletions(-)
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--- a/arch/arm/boot/dts/overlays/uart0-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/uart0-overlay.dts
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@@ -17,17 +17,16 @@
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target = <&gpio>;
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__overlay__ {
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uart0_pins: uart0_pins {
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- brcm,pins = <14 15 14 15>;
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- brcm,function = <0 0 4 4>; /* alt0 */
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- brcm,pull = <0 0 0 2>;
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+ brcm,pins = <14 15>;
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+ brcm,function = <4>; /* alt0 */
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+ brcm,pull = <0 2>;
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};
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};
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};
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__overrides__ {
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- txd0_pin = <&uart0_pins>,"brcm,pins:8";
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- rxd0_pin = <&uart0_pins>,"brcm,pins:12";
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- pin_func = <&uart0_pins>,"brcm,function:8",
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- <&uart0_pins>,"brcm,function:12";
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+ txd0_pin = <&uart0_pins>,"brcm,pins:0";
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+ rxd0_pin = <&uart0_pins>,"brcm,pins:4";
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+ pin_func = <&uart0_pins>,"brcm,function:0";
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};
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};
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