Re: [PATCH net-next v2 1/2] net: pcs: xpcs: enable skip xPCS soft reset
From: Andrew Lunn <andrew@lunn.ch>
Date: 2021-08-27 02:03:43
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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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel