Re: [PATCH v5 2/2] PCI: brcmstb: Use reset/rearm instead of deassert/assert

Florian Fainelli
2021-03-29T16:51:12Z

On 3/29/21 9:10 AM, Lorenzo Pieralisi wrote:
> On Fri, Mar 12, 2021 at 03:45:55PM -0500, Jim Quinlan wrote:
>> The Broadcom STB PCIe RC uses a reset control "rescal" for certain chips.
>> The "rescal" implements a "pulse reset" so using assert/deassert is wrong
>> for this device. Instead, we use reset/rearm. We need to use rearm so
>> that we can reset it after a suspend/resume cycle; w/o using "rearm", the
>> "rescal" device will only ever fire once.
>>
>> Of course for suspend/resume to work we also need to put the reset/rearm
>> calls in the suspend and resume routines.
>
> Actually - I am sorry but it looks like you will have to split the patch
> in two since this is two logical changes.

I do not believe this can be easily split, since there is currently a
misused of the reset controller API and this patch fixes all call sites
at once. It would not really make sense to fix probe/remove and then
leave suspend/resume broken in the same manner.
--
Florian