linux-kernel - Re: [PATCH] media: sunxi: a83-mips-csi2: also select GENERIC

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Date:   Sat, 30 Sep 2023 19:20:21 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        linux-phy@...ts.infradead.org
Subject: Re: [PATCH] media: sunxi: a83-mips-csi2: also select GENERIC_PHY



On 9/27/23 03:48, Sakari Ailus wrote:
> Hi Randy,
> 
> Thanks for the patch.
> 
> On Tue, Sep 26, 2023 at 09:04:38PM -0700, Randy Dunlap wrote:
>> When selecting GENERIC_PHY_MIPI_DPHY, also select GENERIC_PHY to
>> prevent kconfig warnings:
>>
>> WARNING: unmet direct dependencies detected for GENERIC_PHY_MIPI_DPHY
>>   Depends on [n]: GENERIC_PHY [=n]
>>   Selected by [y]:
>>   - VIDEO_SUN8I_A83T_MIPI_CSI2 [=y] && MEDIA_SUPPORT [=y] && MEDIA_PLATFORM_SUPPORT [=y] && MEDIA_PLATFORM_DRIVERS [=y] && V4L_PLATFORM_DRIVERS [=y] && VIDEO_DEV [=y] && (ARCH_SUNXI || COMPILE_TEST [=y]) && PM [=y] && COMMON_CLK [=y] && RESET_CONTROLLER [=y]
>>
>> Fixes: 94d7fd9692b5 ("media: sunxi: Depend on GENERIC_PHY_MIPI_DPHY")
>> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
>> Reported-by: kernel test robot <lkp@...el.com>
>> Closes: lore.kernel.org/r/ZQ/WS8HC1A3F0Qn8@...9-mobl
>> Cc: Arnd Bergmann <arnd@...db.de>
>> Cc: Sakari Ailus <sakari.ailus@...ux.intel.com>
>> Cc: Mauro Carvalho Chehab <mchehab@...nel.org>
>> Cc: linux-media@...r.kernel.org
>> Cc: Chen-Yu Tsai <wens@...e.org>
>> Cc: Jernej Skrabec <jernej.skrabec@...il.com>
>> Cc: Samuel Holland <samuel@...lland.org>
>> Cc: linux-arm-kernel@...ts.infradead.org
>> Cc: linux-sunxi@...ts.linux.dev
>> ---
>>  drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig |    1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff -- a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig
>> --- a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig
>> +++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig
>> @@ -8,6 +8,7 @@ config VIDEO_SUN8I_A83T_MIPI_CSI2
>>  	select VIDEO_V4L2_SUBDEV_API
>>  	select V4L2_FWNODE
>>  	select REGMAP_MMIO
>> +	select GENERIC_PHY
> 
> Could GENERIC_PHY_MIPI_DPHY select GENERIC_PHY instead of depending it?

Yes, I don't see why not.  Let's see what the PHY framework people have to say about it.

Vinod, Kishon, do you see any reason that GENERIC_PHY_MIPI_DPHY could not select
GENERIC_PHY instead of depending on it?


> There seem to be a few other drivers that appear to have the same issue.

Yes, I see 4 others that have the same issue.

>>  	select GENERIC_PHY_MIPI_DPHY
>>  	help
>>  	   Support for the Allwinner A83T MIPI CSI-2 controller and D-PHY.
> 

~Randy