[PATCH v3 1/2] PCI: dw-rockchip: Enable L0S capability
Niklas Cassel
cassel at kernel.org
Mon Apr 14 07:15:02 PDT 2025
On Mon, Apr 14, 2025 at 09:27:31AM +0800, Shawn Lin wrote:
> L0S capability isn't enabled on all SoCs by default, so enabling it
> in order to make ASPM L0S work on Rockchip platforms. We have been
> testing it for quite a long time and found the default FTS number
> provided by DWC core doesn't work stable and make LTSSM switch between
> L0S and Recovery, leading to long exit latency, even fail to link sometimes.
> So override it to the max 255 which seems work fine under test for both PHYs
> used by Rockchip platforms.
>
> Signed-off-by: Shawn Lin <shawn.lin at rock-chips.com>
Reviewed-by: Niklas Cassel <cassel at kernel.org>
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