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References: <20230515235713.232939-1-aford173@gmail.com> <20230515235713.232939-5-aford173@gmail.com>
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From:   Jagan Teki <jagan@amarulasolutions.com>
Date:   Wed, 17 May 2023 16:34:54 +0530
Message-ID: <CAMty3ZAU3NG8yk1dFB4Y3QtCZ7j7XUTqKHkJVKhhOduc4V5XpQ@mail.gmail.com>
Subject: Re: [PATCH V6 4/6] drm: bridge: samsung-dsim: Select GENERIC_PHY_MIPI_DPHY
To:     Adam Ford <aford173@gmail.com>
Cc:     dri-devel@lists.freedesktop.org, aford@beaconembedded.com,
        Frieder Schrempf <frieder.schrempf@kontron.de>,
        Chen-Yu Tsai <wenst@chromium.org>,
        Andrzej Hajda <andrzej.hajda@intel.com>,
        Neil Armstrong <neil.armstrong@linaro.org>,
        Robert Foss <rfoss@kernel.org>,
        Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
        Jonas Karlman <jonas@kwiboo.se>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Inki Dae <inki.dae@samsung.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Marek Vasut <marex@denx.de>, linux-kernel@vger.kernel.org
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Hi Adam,

On Tue, May 16, 2023 at 5:27=E2=80=AFAM Adam Ford <aford173@gmail.com> wrot=
e:
>
> In order to support variable DPHY timings, it's necessary
> to enable GENERIC_PHY_MIPI_DPHY so phy_mipi_dphy_get_default_config
> can be used to determine the nominal values for a given resolution
> and refresh rate.
>
> Signed-off-by: Adam Ford <aford173@gmail.com>
> Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de>
> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
> Tested-by: Chen-Yu Tsai <wenst@chromium.org>
> ---
>  drivers/gpu/drm/bridge/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kcon=
fig
> index f076a09afac0..82c68b042444 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -227,6 +227,7 @@ config DRM_SAMSUNG_DSIM
>         select DRM_KMS_HELPER
>         select DRM_MIPI_DSI
>         select DRM_PANEL_BRIDGE
> +       select GENERIC_PHY_MIPI_DPHY

Is it really required? phy is optional as it is not required for
imx8mm/n/p as of now. May be we can add it while supporting it.

Thanks,
Jagan.