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arm64: tegra: Fix HSUART for Jetson AGX Orin 

After commit 71de0a054d ("arm64: tegra: Drop serial clock-names and
reset-names") was applied, the HSUART failed to probe and the following
error is seen:

 serial-tegra 3100000.serial: Couldn't get the reset
 serial-tegra: probe of 3100000.serial failed with error -2

Commit 71de0a054d ("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 ff578db7b6
("arm64: tegra: Enable UART instance on 40-pin header") that
enabled the HSUART for Jetson AGX Orin. Fix this by populating the
"reset-names" property for the HSUART on Jetson AGX Orin.

Fixes: ff578db7b6 ("arm64: tegra: Enable UART instance on 40-pin header")
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Jon Hunter 2023-07-03 12:36:17 +01:00 committed by Thierry Reding
parent d97966df30
commit 861dbb2b15
1 changed files with 1 additions and 0 deletions
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arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
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@ -2010,6 +2010,7 @@ interrupt-controller@2a40000 {
serial@3100000 {
compatible = "nvidia,tegra194-hsuart";
reset-names = "serial";
status = "okay";
};