linux-kernel - Re: [PATCHv2 4/8] dt-bindings: panel: common: document orientation property

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Date:   Mon, 19 Feb 2018 12:06:18 +0100
From:   Sebastian Reichel <sebastian.reichel@...labora.co.uk>
To:     Rob Herring <robh@...nel.org>
Cc:     Tomi Valkeinen <tomi.valkeinen@...com>,
        Tony Lindgren <tony@...mide.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com
Subject: Re: [PATCHv2 4/8] dt-bindings: panel: common: document orientation
 property

Hi,

On Sun, Feb 18, 2018 at 05:24:24PM -0600, Rob Herring wrote:
> On Thu, Feb 08, 2018 at 07:30:31PM +0100, Sebastian Reichel wrote:
> > Introduce new "orientation" property for describing in which
> > orientation a panel has been mounted to the device. This can
> > be used by the operating system to automatically rotate the
> > display correctly.
> > 
> > Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.co.uk>
> > ---
> >  .../devicetree/bindings/display/panel/panel-common.txt     | 12 ++++++++++++
> >  include/dt-bindings/display/common.h                       | 14 ++++++++++++++
> >  2 files changed, 26 insertions(+)
> >  create mode 100644 include/dt-bindings/display/common.h
> > 
> > diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.txt b/Documentation/devicetree/bindings/display/panel/panel-common.txt
> > index 557fa765adcb..c646b8908458 100644
> > --- a/Documentation/devicetree/bindings/display/panel/panel-common.txt
> > +++ b/Documentation/devicetree/bindings/display/panel/panel-common.txt
> > @@ -18,6 +18,18 @@ Descriptive Properties
> >    physical area where images are displayed. These properties are expressed in
> >    millimeters and rounded to the closest unit.
> >  
> > +- orientation: The orientation property specifies the panel orientation
> > +  in relation to the device's casing. The following values are possible:
> > +
> > +   * 0 = The top side of the panel matches the top side of the device's
> > +         casing.
> > +   * 1 = The top side of the panel matches the bottom side of the device's
> > +         casing. In other words the panel is mounted upside-down.
> > +   * 2 = The left side of the panel matches the top side of the device's
> > +         casing.
> > +   * 3 = The right side of the panel matches the top side of the device's
> > +         casing.
> 
> The rotation property in panel.txt already handles this, right?

Yes, looks like it can be used. I guess panel.txt and
panel-common.txt should be merged, though?

> >  - label: The label property specifies a symbolic name for the panel as a
> >    string suitable for use by humans. It typically contains a name inscribed on
> >    the system (e.g. as an affixed label) or specified in the system's

-- Sebastian

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