This is a note to let you know that I've just added the patch titled
arm64: tegra: Fix HSUART for Smaug
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-tegra-fix-hsuart-for-smaug.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3a478b1b6685f3d02ef13aa50be8158ae1a21ab2
Author: Diogo Ivo <diogo.ivo@xxxxxxxxxxxxxxxxxx>
Date: Fri Jul 14 11:10:17 2023 +0100
arm64: tegra: Fix HSUART for Smaug
[ Upstream commit 590bfe51838f6345a6a3288507661dc9b7208464 ]
After commit 71de0a054d0e ("arm64: tegra: Drop serial clock-names and
reset-names") was applied, the HSUART failed to probe and the following
error is seen:
serial-tegra 70006300.serial: Couldn't get the reset
serial-tegra: probe of 70006300.serial failed with error -2
Commit 71de0a054d0e ("arm64: tegra: Drop serial clock-names and
reset-names") is correct because the "reset-names" property is not
needed for 8250 UARTs. However, the "reset-names" is required for the
HSUART and should have been populated as part of commit a63c0cd83720c
("arm64: dts: tegra: smaug: Add Bluetooth node") that enabled the HSUART
for the Pixel C. Fix this by populating the "reset-names" property for
the HSUART on the Pixel C.
Fixes: a63c0cd83720 ("arm64: dts: tegra: smaug: Add Bluetooth node")
Signed-off-by: Diogo Ivo <diogo.ivo@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Jon Hunter <jonathanh@xxxxxxxxxx>
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts b/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts
index d7d7c63e62e25..79d294c2ee199 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts
@@ -1312,6 +1312,7 @@ serial@70006000 {
uartd: serial@70006300 {
compatible = "nvidia,tegra30-hsuart";
+ reset-names = "serial";
status = "okay";
bluetooth {
