Re: [PATCH v4 2/2] PCI: mediatek-gen3: Add power and reset control feature for downstream component

[Krzysztof Kozlowski]

On 06/11/2023 07:12, Jian Yang wrote:
> From: "jian.yang" <jian.yang@xxxxxxxxxxxx>
> 
> Make MediaTek's controller driver capable of controlling power
> supplies and reset pin of a downstream component in power-on and
> power-off process.
> 
> Some downstream components (e.g., a WIFI chip) may need an extra
> reset other than PERST# and their power supplies, depending on
> the requirements of platform, may need to controlled by their
> parent's driver. To meet the requirements described above, I add this
> feature to MediaTek's PCIe controller driver as an optional feature.

NAK, strong NAK. This should be done in a generic way because nothing
here is specific to Mediatek.

You just implement power sequencing of devices through quirks specific
to one controller.

Work with others to provide common solution.
https://lpc.events/event/17/contributions/1507/

Best regards,
Krzysztof