From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Stephen Boyd <swboyd@chromium.org>
Cc: Douglas Anderson <dianders@chromium.org>,
a.hajda@samsung.com, airlied@linux.ie, daniel@ffwll.ch,
narmstrong@baylibre.com, robh+dt@kernel.org,
spanda@codeaurora.org, jonas@kwiboo.se,
bjorn.andersson@linaro.org, devicetree@vger.kernel.org,
jeffrey.l.hugo@gmail.com, jernej.skrabec@siol.net,
linux-arm-msm@vger.kernel.org, robdclark@chromium.org,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] dt-bindings: drm/bridge: ti-sn65dsi86: Add hpd-gpios to the bindings
Date: Wed, 15 Apr 2020 23:32:56 +0300 [thread overview]
Message-ID: <20200415203256.GP4758@pendragon.ideasonboard.com> (raw)
In-Reply-To: <158698038289.105027.2860892334897893887@swboyd.mtv.corp.google.com>
On Wed, Apr 15, 2020 at 12:53:02PM -0700, Stephen Boyd wrote:
> Quoting Douglas Anderson (2020-04-15 08:48:40)
> > Allow people to specify to use a GPIO for hot-plug-detect. Add an
> > example.
> >
> > NOTE: The current patch adding support for hpd-gpios to the Linux
> > driver for hpd-gpios only adds enough support to the driver so that
> > the bridge can use one of its own GPIOs. The bindings, however, are
> > written generically.
> >
> > Signed-off-by: Douglas Anderson <dianders@chromium.org>
> > ---
> >
> > .../bindings/display/bridge/ti,sn65dsi86.yaml | 10 +++++++++-
> > 1 file changed, 9 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
> > index 8cacc6db33a9..554bfd003000 100644
> > --- a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
> > +++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
> > @@ -60,6 +60,10 @@ properties:
> > const: 1
> > description: See ../../pwm/pwm.yaml for description of the cell formats.
> >
> > + hpd-gpios:
> > + maxItems: 1
> > + description: If present use the given GPIO for hot-plug-detect.
>
> Shouldn't this go in the panel node? And the panel driver should get the
> gpio and poll it after powering up the panel? Presumably that's why we
> have the no-hpd property in the simple panel binding vs. putting it here
> in the bridge.
Same question really, I think this belongs to the panel (or connector)
node indeed.
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2020-04-15 20:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 15:48 [PATCH 1/3] dt-bindings: drm/bridge: ti-sn65dsi86: Convert to yaml Douglas Anderson
2020-04-15 15:48 ` [PATCH 2/3] dt-bindings: drm/bridge: ti-sn65dsi86: Add hpd-gpios to the bindings Douglas Anderson
2020-04-15 19:53 ` Stephen Boyd
2020-04-15 20:32 ` Laurent Pinchart [this message]
2020-04-15 23:49 ` Doug Anderson
2020-04-16 0:54 ` Laurent Pinchart
2020-04-16 21:53 ` Doug Anderson
2020-04-17 18:08 ` Laurent Pinchart
2020-04-21 5:10 ` Doug Anderson
2020-04-15 15:48 ` [PATCH 3/3] drm/bridge: ti-sn65dsi86: Allow one of the bridge GPIOs to be HPD Douglas Anderson
2020-04-15 19:50 ` [PATCH 1/3] dt-bindings: drm/bridge: ti-sn65dsi86: Convert to yaml Stephen Boyd
2020-04-15 20:31 ` Laurent Pinchart
2020-04-21 5:07 ` Doug Anderson
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