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SubjectRe: [PATCH] tty: serial: Add earlycon driver for Tegra Combined UART
On Sat, Feb 13, 2021 at 01:58:24PM +0200, Mikko Perttunen wrote:
> Add an earlycon driver for platforms with TCU, namely Tegra194.
> The driver is compatible with boot parameters passed by NVIDIA
> boot chains.

I confirm that this patch applies mostly cleanly (modulo minor Makefile
issue) to v5.16 and that it works with the vendor cboot on a Xavier AGX
device. I assume that it is expected that the earlycon output comes out
twice (once from the earlycon driver and another time from the real

Tested-by: Helmut Grohne <>

Some of the concerns from Thierry Reding remain unaddressed though.


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