[PATCH v2 3/4] dt-bindings: PCI: Add UltraRISC DP1000 PCIe controller

Jia Wang wangjia at ultrarisc.com
Tue Apr 7 23:43:19 PDT 2026


On 2026-04-08 08:28 +0200, Krzysztof Kozlowski wrote:
> On 08/04/2026 05:34, Jia Wang wrote:
> >>> +  max-link-speed:
> >>> +    $ref: /schemas/types.yaml#/definitions/uint32
> >>> +    const: 4
> >>
> >> If const then deducible from the compatible. Drop the property.
> >>
> > 
> > Will replace `const: 4` with `maximum: 4` in v3.
> 
> Why? Wasn't maximum link speed fixed to 4?
>

Just to make sure I fully understand: since the maximum link speed is a
fixed hardware property and is implied by the compatible, we should drop
the `max-link-speed` property from the binding.

In that case, should I set `pci->max_link_speed = 4` in the driver during
probe? I want to make sure this is the correct way to handle it.
 
> 
> Best regards,
> Krzysztof
> 

Best regards,
Jia Wang





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