linux-kernel - Re: [EXT] Re: [PATCH v3 1/2] dt-bindings: display: panel: Add support for Raydium RM67191 panel

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1561126587.9328.76.camel@nxp.com>
Date:   Fri, 21 Jun 2019 14:16:28 +0000
From:   Robert Chiras <robert.chiras@....com>
To:     "festevam@...il.com" <festevam@...il.com>
CC:     dl-linux-imx <linux-imx@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "sam@...nborg.org" <sam@...nborg.org>,
        "daniel@...ll.ch" <daniel@...ll.ch>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "thierry.reding@...il.com" <thierry.reding@...il.com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "airlied@...ux.ie" <airlied@...ux.ie>
Subject: Re: [EXT] Re: [PATCH v3 1/2] dt-bindings: display: panel: Add support
 for Raydium RM67191 panel

Hi Fabio,

On Vi, 2019-06-21 at 11:00 -0300, Fabio Estevam wrote:
> Hi Robert,
> 
> On Thu, Jun 20, 2019 at 10:32 AM Robert Chiras <robert.chiras@....com
> > wrote:
> > 
> > 
> > Add dt-bindings documentation for Raydium RM67191 DSI panel.
> > 
> > Signed-off-by: Robert Chiras <robert.chiras@....com>
> > Reviewed-by: Sam Ravnborg <sam@...nborg.org>
> > ---
> >  .../bindings/display/panel/raydium,rm67191.txt     | 39
> > ++++++++++++++++++++++
> >  1 file changed, 39 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/display/panel/raydium,rm67191.txt
> > 
> > diff --git
> > a/Documentation/devicetree/bindings/display/panel/raydium,rm67191.t
> > xt
> > b/Documentation/devicetree/bindings/display/panel/raydium,rm67191.t
> > xt
> > new file mode 100644
> > index 0000000..52af272
> > --- /dev/null
> > +++
> > b/Documentation/devicetree/bindings/display/panel/raydium,rm67191.t
> > xt
> > @@ -0,0 +1,39 @@
> > +Raydium RM67171 OLED LCD panel with MIPI-DSI protocol
> > +
> > +Required properties:
> > +- compatible:          "raydium,rm67191"
> > +- reg:                 virtual channel for MIPI-DSI protocol
> > +                       must be <0>
> > +- dsi-lanes:           number of DSI lanes to be used
> > +                       must be <3> or <4>
> > +- port:                input port node with endpoint definition as
> > +                       defined in
> > Documentation/devicetree/bindings/graph.txt;
> > +                       the input port should be connected to a
> > MIPI-DSI device
> > +                       driver
> > +
> > +Optional properties:
> > +- reset-gpios:         a GPIO spec for the RST_B GPIO pin
> > +- width-mm:            see panel-common.txt
> > +- height-mm:           see panel-common.txt
> > +- video-mode:          0 - burst-mode
> > +                       1 - non-burst with sync event
> > +                       2 - non-burst with sync po ulse
> No power-supply property?
From what I've seen in the schematics, the power lines on the DSI port
on all the i.MX8 cores are coming from a PMIC providing power for all
the peripherals. Since I didn't find a way to cut the power on a single
peripheral (like DSI, for example) it doesn't make sense for power-
supply property. For now, at least.