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

Marek Behún kabel at kernel.org
Tue Feb 22 09:24:15 PST 2022


On Tue, 22 Feb 2022 17:31:55 +0100
Pali Rohár <pali at 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 at kernel.org>
> Signed-off-by: Marek Behún <kabel at kernel.org>

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

Marek



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