On 17/01/24 16:30, Krzysztof Kozlowski wrote: > On 17/01/2024 11:58, Siddharth Vadapalli wrote: >> On 17/01/24 16:05, Krzysztof Kozlowski wrote: >>> On 17/01/2024 11:25, Siddharth Vadapalli wrote: >>>> Extend the existing compatible based checks for validating and enforcing >>>> the "max-link-speed" property. >>> >>> Based on what? Driver or hardware? Your entire change suggests you >> >> Hardware. The PCIe controller on AM64 SoC supports up to Gen2 link speed while >> the PCIe controllers on other SoCs support Gen3 link speed. >> >>> should just drop it from the binding, because this can be deduced from >>> compatible. >> >> Could you please clarify? Isn't the addition of the checks for "max-link-speed" >> identical to the checks which were added for "num-lanes", both of which are >> Hardware specific? > > Compatible defines these values, at least what it looks like from the patch. In this patch, I have added checks for the "max-link-speed" property in the same section that "num-lanes" is being evaluated. The values for "max-link-speed" are based on the Hardware support and this patch is validating the "max-link-speed" property in the device-tree nodes for the devices against the Hardware supported values which this patch is adding in the corresponding section. Kindly let me know if I misunderstood what you meant to convey. -- Regards, Siddharth.
