From: Maxime Ripard <maxime.ripard@free-electrons.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>,
David Airlie <airlied@linux.ie>, Chen-Yu Tsai <wens@csie.org>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Mark Rutland <mark.rutland@arm.com>,
Rob Herring <robh+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org, plaes@plaes.org,
icenowy@aosc.io,
Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
jernej.skrabec@siol.net, devicetree@vger.kernel.org,
thierry.reding@gmail.com
Subject: Re: [PATCH v5 01/12] dt-bindings: panel: lvds: Document power-supply property
Date: Thu, 4 Jan 2018 20:44:36 +0100 [thread overview]
Message-ID: <20180104194436.reka6nw5hf32o4p3@flea.lan> (raw)
In-Reply-To: <2493504.1OPucrC18r@avalon>
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Hi Laurent,
On Fri, Dec 22, 2017 at 02:08:20PM +0200, Laurent Pinchart wrote:
> Hi Maxime,
>
> Thank you for the patch.
>
> On Thursday, 21 December 2017 13:02:27 EET Maxime Ripard wrote:
> > The power-supply property is used by a vast majority of panels, including
> > panel-simple. Let's document it as a common property
> >
> > Reviewed-by: Rob Herring <robh@kernel.org>
> > Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
> > ---
> > Documentation/devicetree/bindings/display/panel/panel-common.txt | 6 ++++++
> > Documentation/devicetree/bindings/display/panel/panel-lvds.txt | 1 +
> > Documentation/devicetree/bindings/display/panel/simple-panel.txt | 2 +- 3
> > files changed, 8 insertions(+), 1 deletion(-)
> >
> > diff --git
> > a/Documentation/devicetree/bindings/display/panel/panel-common.txt
> > b/Documentation/devicetree/bindings/display/panel/panel-common.txt index
> > ec52c472c845..125ea68052af 100644
> > --- a/Documentation/devicetree/bindings/display/panel/panel-common.txt
> > +++ b/Documentation/devicetree/bindings/display/panel/panel-common.txt
> > @@ -78,6 +78,12 @@ used for panels that implement compatible control
> > signals. while active. Active high reset signals can be supported by
> > inverting the GPIO specifier polarity flag.
> >
> > +Power
> > +-----
> > +
> > +- power-supply: many display panels need an additional power supply in
> > + order to be fully powered-up. For such panels, power-supply contains
> > + a phandle to the regulator powering the panel.
>
> I think we should give more details here about the limitations of this
> property. How about the following explanation ?
>
> - power-supply: display panels require power to be supplied. While several
> panels need more than one power supply with panel-specific constraints
> governing the order and timings of the power supplies, in many cases a single
> power supply is sufficient, either because the panel has a single power rail,
> or because all its power rails can be driven by the same supply. In that case
> the power-supply property specifies the supply powering the panel as a phandle
> to a regulator.
That works for me. Do you want me to resend it with that text, or
should I merge it (and if so, with your Reviewed-by or Acked-by?)?
Thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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next prev parent reply other threads:[~2018-01-04 19:44 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-21 11:02 [PATCH v5 00/12] drm/sun4i: Add A83t LVDS support Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 01/12] dt-bindings: panel: lvds: Document power-supply property Maxime Ripard
2017-12-22 12:08 ` Laurent Pinchart
2018-01-04 19:44 ` Maxime Ripard [this message]
[not found] ` <20180104194436.reka6nw5hf32o4p3-ZC1Zs529Oq4@public.gmane.org>
2018-01-04 20:05 ` Laurent Pinchart
2017-12-21 11:02 ` [PATCH v5 02/12] drm/panel: lvds: Add support for the " Maxime Ripard
2017-12-22 12:09 ` Laurent Pinchart
2017-12-21 11:02 ` [PATCH v5 03/12] dt-bindings: display: sun4i-drm: Add LVDS properties Maxime Ripard
[not found] ` <ddbde28fe2e4f21412974e4c69fbfe1c5ff9383f.1513854122.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-12-30 11:45 ` Jernej Škrabec
2018-01-04 19:03 ` Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 04/12] dt-bindings: display: sun4i-drm: Add A83T pipeline Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 05/12] drm/sun4i: Force the mixer rate at 150MHz Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 06/12] drm/sun4i: Create minimal multipliers and dividers Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 07/12] drm/sun4i: Add LVDS support Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 08/12] drm/sun4i: Add A83T support Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 09/12] ARM: dts: sun8i: a83t: Add display pipeline Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 10/12] ARM: dts: sun8i: a83t: Enable the PWM Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 11/12] ARM: dts: sun8i: a83t: Add LVDS pins group Maxime Ripard
2017-12-21 11:02 ` [PATCH v5 12/12] ARM: dts: sun8i: a711: Enable the LCD Maxime Ripard
2018-01-05 9:39 ` [PATCH v5 00/12] drm/sun4i: Add A83t LVDS support Maxime Ripard
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