Re: [PATCH V2 23/27] mmc: mmci: add variant property to request a reset

From: Ulf Hansson
Date: Mon Oct 01 2018 - 09:43:51 EST


[...]

>>> @@ -1854,6 +1855,14 @@ static int mmci_probe(struct amba_device *dev,
>>>
>>> dev_dbg(mmc_dev(mmc), "clocking block at %u Hz\n", mmc->f_max);
>>>
>>> + if (variant->reset) {
>>> + host->rst = devm_reset_control_get_exclusive(&dev->dev,
>>> NULL);
>>
>>
>> As suggested, let's make this optional and not depending on the variant.
>
>
> I done like that because is required for my variant (if no reset, no power
> cycle for sdmmc).

The point is, I think don't think it's correct to ties this to the
variant, but rather I think it depends on the behavior of the SoC.

>
> If you prefer, I could move to optional with
> "devm_reset_control_get_optional_exclusive"
> And I add a comment in mmci dt binding to specify that not optional
> for sdmmc. (see above)

Alright, fair enough. Let' do that.

[...]

Kind regards
Uffe