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On most MediaTek boards only serial0 is aliased, so the remaining enabled uarts get first-free ttyS line numbers from the 8250 core in probe order. When the console uart defers on its clocks another uart can win line 0: console=ttyS0 then ends up on the wrong port and the boot looks like a hang on the serial console, depending on probe order. Signed-off-by: Carlo Caione <ccaione@baylibre.com> Reviewed-by: Chen-Yu Tsai <wenst@chromium.org> # kukui & asurada-hayato Link: https://patch.msgid.link/20260727-ccaione-genio-serial-aliases-v2-1-0f2ae41a8e89@baylibre.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>