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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)
36 lines
921 B
Diff
36 lines
921 B
Diff
From 197b4fbd218a0a12573cdfcb011eeb3f00765d96 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Fri, 17 Jul 2020 11:20:07 +0100
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Subject: [PATCH] ARM: dts: Add UART skip-init properties for U-boot
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U-boot can get stuck trying to initialise UARTs that aren't mapped
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to the pin header. There is no reason for U-boot not to rely on the
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initialisation by the firmware, so tag both UARTs with the u-boot
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magic boolean property "skip-init".
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See: https://github.com/raspberrypi/linux/pull/3731
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https://lists.denx.de/pipermail/u-boot/2017-April/285606.html
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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arch/arm/boot/dts/bcm270x-rpi.dtsi | 8 ++++++++
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1 file changed, 8 insertions(+)
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--- a/arch/arm/boot/dts/bcm270x-rpi.dtsi
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+++ b/arch/arm/boot/dts/bcm270x-rpi.dtsi
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@@ -102,6 +102,14 @@
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};
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};
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+&uart0 {
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+ skip-init;
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+};
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+
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+&uart1 {
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+ skip-init;
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+};
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+
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&txp {
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status = "disabled";
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};
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