linux-kernel - Re: [PATCH -next] drm/mediatek: Fix Kconfig warning

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Date:   Sun, 26 Apr 2020 16:20:39 +0800
From:   Chun-Kuang Hu <chunkuang.hu@...nel.org>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Matthias Brugger <matthias.bgg@...il.com>,
        CK Hu <ck.hu@...iatek.com>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH -next] drm/mediatek: Fix Kconfig warning

Hi, YueHaibing:

YueHaibing <yuehaibing@...wei.com> 於 2020年4月20日 週一 下午10:04寫道：
>
> WARNING: unmet direct dependencies detected for MTK_MMSYS
>   Depends on [n]: (ARCH_MEDIATEK [=y] || COMPILE_TEST [=n]) && COMMON_CLK_MT8173_MMSYS [=n]
>   Selected by [y]:
>   - DRM_MEDIATEK [=y] && HAS_IOMEM [=y] && DRM [=y] && (ARCH_MEDIATEK [=y] || ARM && COMPILE_TEST [=n]) && COMMON_CLK [=y] && HAVE_ARM_SMCCC [=y] && OF [=y]
>
> Add missing dependcy COMMON_CLK_MT8173_MMSYS to fix this.

>From the code relationship, mediatek drm has relation with mediatek
mmsys, and mediatek mmsys has relation with medaitek clock.
So I think it's better that CONFIG_MTK_MMSYS select
CONFIG_COMMON_CLK_MT8173_MMSYS.

Regards,
Chun-Kuang.

>
> Fixes: 2c758e301ed9 ("soc / drm: mediatek: Move routing control to mmsys device")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
>  drivers/gpu/drm/mediatek/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
> index c420f5a3d33b..4d9b5540de68 100644
> --- a/drivers/gpu/drm/mediatek/Kconfig
> +++ b/drivers/gpu/drm/mediatek/Kconfig
> @@ -6,6 +6,7 @@ config DRM_MEDIATEK
>         depends on COMMON_CLK
>         depends on HAVE_ARM_SMCCC
>         depends on OF
> +       depends on COMMON_CLK_MT8173_MMSYS
>         select DRM_GEM_CMA_HELPER
>         select DRM_KMS_HELPER
>         select DRM_MIPI_DSI
> --
> 2.17.1
>
>