Re: [PATCH net-next v2 1/2] net: pcs: xpcs: enable skip xPCS soft reset

On Fri, Aug 27, 2021 at 07:51:32AM +0800, Wong Vee Khee wrote:

Unlike any other platforms, Intel AlderLake-S uses Synopsys SerDes where
all the SerDes PLL configurations are controlled by the xPCS at the BIOS
level. If the driver perform a xPCS soft reset on initialization, these
settings will be switched back to the power on reset values.

So you have given up on the idea of calling into the BIOS to do this?
ACPI is too difficult to use? Can you at least copy the code from the
BIOS into the driver? It might then also be possible to fix your
inability to swap link speeds?

	  Andrew