Re: [PATCH 3/6] dt-bindings: Add 'slot-power-limit-milliwatt' PCIe port property

Marek Behún
2022-02-22T17:32:51Z

On Tue, 22 Feb 2022 17:31:55 +0100
Pali Rohár <pali@kernel.org> wrote:

> This property specifies slot power limit in mW unit. It is a form-factor
> and board specific value and must be initialized by hardware.
>
> Some PCIe controllers delegate this work to software to allow hardware
> flexibility and therefore this property basically specifies what should
> host bridge program into PCIe Slot Capabilities registers.
>
> The property needs to be specified in mW unit instead of the special format
> defined by Slot Capabilities (which encodes scaling factor or different
> unit). Host drivers should convert the value from mW to needed format.
>
> Signed-off-by: Pali Rohár <pali@kernel.org>
> Signed-off-by: Marek Behún <kabel@kernel.org>

This patch is not needed, the property already is described in
dtschema.

Marek