Re: [PATCH v9 3/5] drm/msm/dp: add support for DP PLL driver

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On 8/11/20 12:49 PM, tanmay@xxxxxxxxxxxxxx wrote:
> On 2020-08-07 13:28, Randy Dunlap wrote:
>> On 8/7/20 1:24 PM, Stephen Boyd wrote:
>>> Quoting Rob Clark (2020-08-07 08:51:48)
>>>> On Fri, Aug 7, 2020 at 8:27 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
>>>> wrote:
>>>>>
>>>>> On 8/7/20 12:17 AM, Tanmay Shah wrote:
>>>>>> diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
>>>>>> index ea3c4d094d09..cc1392b29022 100644
>>>>>> --- a/drivers/gpu/drm/msm/Kconfig
>>>>>> +++ b/drivers/gpu/drm/msm/Kconfig
>>>>>> @@ -60,6 +60,7 @@ config DRM_MSM_HDMI_HDCP
>>>>>>  config DRM_MSM_DP
>>>>>>       bool "Enable DP support in MSM DRM driver"
>>>>>>       depends on DRM_MSM
>>>>>> +     default y
>>>>>>       help
>>>>>>         Compile in support for DP driver in msm drm driver. DP external
>>>>>>         display support is enabled through this config option. It can
>>>>>
>>>>> Hi,
>>>>>
>>>>> You need a very strong justification to make an optional part of a
>>>>> driver
>>>>> to be "default y".
>>>>
>>>> My opinion is that if the driver is built, everything should be built.
>>>> This is what makes sense for distro's.  It is only the embedded case
>>>> where you want to trim down unneeded features where you might want to
>>>> disable some parts.  So 'default y' makes sense to me.
>>
>> We don't set defaults for distro convenience.
>>
>>>
>>> Maybe use 'default DRM_MSM' so that it doesn't trigger the 'default y'
>>> filters people have?
>>
>> Most people can figure that one out.  ;)
>> I don't have any automated filters.
> 
> After after further reviews, I agree with Rob. Display Port is required module as of now so it makes sense to keep 'default y'.

If it is required, then you don't need to have a Kconfig entry/symbol for it.


-- 
~Randy




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