linux-kernel - Re: [PATCH v7 8/8] drm: Config orientation property if panel provides it

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Message-ID: <CAE-0n51UTDJ1zkhrwcxrYL7X9_MrhAeodiTJ30k+3Zef3zP2=Q@mail.gmail.com>
Date:   Fri, 10 Jun 2022 13:21:40 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Douglas Anderson <dianders@...omium.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Sam Ravnborg <sam@...nborg.org>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org,
        Rob Clark <robdclark@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 8/8] drm: Config orientation property if panel provides it

Quoting Hsin-Yi Wang (2022-06-09 00:27:23)
> Panel orientation property should be set before drm_dev_register().
> Some drm driver calls drm_dev_register() in .bind(). However, most
> panels sets orientation property relatively late, mostly in .get_modes()
> callback, since this is when they are able to get the connector and
> binds the orientation property to it, though the value should be known
> when the panel is probed.
>
> In drm_bridge_connector_init(), if a bridge is a panel bridge, use it to
> set the connector's panel orientation property.
>
> Suggested-by: Doug Anderson <dianders@...omium.org>
> Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@...omium.org>