From 62b7f5931c54e96fca56dd8761b0e466d355c881 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Thu, 18 Feb 2021 18:04:33 +0100 Subject: bcm27xx: import latest patches from the RPi foundation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 (cherry-picked from commit f07e572f64) --- ...-Add-UART-skip-init-properties-for-U-boot.patch | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 target/linux/bcm27xx/patches-5.4/950-0925-ARM-dts-Add-UART-skip-init-properties-for-U-boot.patch (limited to 'target/linux/bcm27xx/patches-5.4/950-0925-ARM-dts-Add-UART-skip-init-properties-for-U-boot.patch') diff --git a/target/linux/bcm27xx/patches-5.4/950-0925-ARM-dts-Add-UART-skip-init-properties-for-U-boot.patch b/target/linux/bcm27xx/patches-5.4/950-0925-ARM-dts-Add-UART-skip-init-properties-for-U-boot.patch new file mode 100644 index 0000000000..be6c9dd250 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0925-ARM-dts-Add-UART-skip-init-properties-for-U-boot.patch @@ -0,0 +1,35 @@ +From 197b4fbd218a0a12573cdfcb011eeb3f00765d96 Mon Sep 17 00:00:00 2001 +From: Phil Elwell +Date: Fri, 17 Jul 2020 11:20:07 +0100 +Subject: [PATCH] ARM: dts: Add UART skip-init properties for U-boot + +U-boot can get stuck trying to initialise UARTs that aren't mapped +to the pin header. There is no reason for U-boot not to rely on the +initialisation by the firmware, so tag both UARTs with the u-boot +magic boolean property "skip-init". + +See: https://github.com/raspberrypi/linux/pull/3731 + https://lists.denx.de/pipermail/u-boot/2017-April/285606.html + +Signed-off-by: Phil Elwell +--- + arch/arm/boot/dts/bcm270x-rpi.dtsi | 8 ++++++++ + 1 file changed, 8 insertions(+) + +--- a/arch/arm/boot/dts/bcm270x-rpi.dtsi ++++ b/arch/arm/boot/dts/bcm270x-rpi.dtsi +@@ -102,6 +102,14 @@ + }; + }; + ++&uart0 { ++ skip-init; ++}; ++ ++&uart1 { ++ skip-init; ++}; ++ + &txp { + status = "disabled"; + }; -- cgit v1.2.3