Re: [RESEND PATCH 3/4] usb: dwc2: assert phy reset when waking up in rk3288 platform
From: Felipe Balbi
Date: Mon Aug 29 2016 - 03:51:41 EST
Hi,
John Youn <John.Youn@xxxxxxxxxxxx> writes:
[...]
>>>> + */
>>>> + if (of_device_is_compatible(np, "rockchip,rk3288-usb"))
>>>> + hsotg->phy->ops->reset(hsotg->phy);
>>>> +
>>>
>>> You should probably check for NULL before calling the reset()
>>> callback.
>> Sure.
>>>
>>> Also, I'd rather see a generic quirk property that you set for your
>>> platform.
>>>
>>> Something like "phy_reset_on_wakeup_quirk".
>> But Rob Herring want me to implied by the SoC specific compatible
>> string. I agree with him. It is certainly bug in RK3288 platform.
>> It is no found no the other platform.
>
> Ok, I missed that before.
>
> Based on the drivers I'm familiar with (like dwc3), you would
> typically add a "quirk" anyways.
>
> Felipe,
>
> Do you have some policy or preference on this?
if it's not a dwc2-generic feature, then let's do it via compatible
flag, sure. What we don't want is for things like:
if (is_compatible('synopsys') || is_compatible('rockchip') ||
is_compatible('foobar') ... )
For that, we'd be better of adding a generic quirk flag which several
can use.
--
balbi
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