[PATCH] arm64: dts: ti: k3-am65: restrict PCIe to Gen2 speed

[Sekhar Nori]

On 28/08/20 5:02 PM, Nishanth Menon wrote:
> On 08:34-20200828, Sekhar Nori wrote:
>> On 28/08/20 5:54 AM, Nishanth Menon wrote:
>>> On 10:13-20200827, Sekhar Nori wrote:
>>>> Hi Nishanth,
>>>>
>>>> On 02/08/20 10:23 PM, Sekhar Nori wrote:
>>>>> Per errata i2104 documented in AM65x device errata document (TI document
>>>>> number SPRZ452E, revised June 2019), Gen3 operation is not supported for
>>>>> both PCIe Root Complex and Endpoint modes of operation.
>>>>>
>>>>> See: https://www.ti.com/lit/er/sprz452e/sprz452e.pdf
>>>>>
>>>>> Restrict speed to Gen2 to address the errata.
>>>>>
>>>>> Signed-off-by: Sekhar Nori <nsekhar at ti.com>
>>>>
>>>> Is this in your queue or should I rebase and resend?
>>>
>>> Thanks for the reminder. I have put it on my staging branch for now.
>>> Once rc3 gets tagged with irqchip related changes, I will move this over
>>> to next.
>>
>> Hmm, this is errata fix and fair game for -rc cycle. Can we have this in
>> v5.9 itself?
> 
> We could, but does'nt seem urgent enough for 5.9 cycle since the dts node
> was'nt introduced in this cycle, I think it was introduced around 5.3 or
> so?

Isn't this too early in -rc cycle to be regressions only?

I can provide a fixes tag if you want to ensure backporting. I felt odd
about it because its workaround for hardware issue, nothing wrong in the
original commit when it was written.

But if you are uncomfortable, fine :)

Thanks,
Sekhar