From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com>,
Mark Rutland <mark.rutland@arm.com>,
Jernej Skrabec <jernej.skrabec@siol.net>,
Neil Armstrong <narmstrong@baylibre.com>,
Andrey Smirnov <andrew.smirnov@gmail.com>,
Jonas Karlman <jonas@kwiboo.se>,
dri-devel@lists.freedesktop.org,
Andrzej Hajda <a.hajda@samsung.com>,
devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
Thierry Reding <thierry.reding@gmail.com>,
intel-gfx-trybot@lists.freedesktop.org, kernel@collabora.com,
Sam Ravnborg <sam@ravnborg.org>, Chris Healy <cphealy@gmail.com>
Subject: Re: [PATCH v10 09/12] dt-bindings: display: bridge: lvds-codec: Add new bus-width prop
Date: Tue, 25 Feb 2020 00:31:39 +0200 [thread overview]
Message-ID: <20200224223139.GA29578@pendragon.ideasonboard.com> (raw)
In-Reply-To: <20200128135514.108171-10-boris.brezillon@collabora.com>
Hi Boris,
Thank you for the patch.
On Tue, Jan 28, 2020 at 02:55:11PM +0100, Boris Brezillon wrote:
> Add the bus-width property to describe the input bus format.
>
> v10:
> * Add changelog to the commit message
> * Add Rob's R-b
>
> v8 -> v9:
> * No changes
>
> v7:
> * Rebase on top of lvds-codec changes
> * Drop the data-mapping property
>
> v4 -> v6:
> * Not part of the series
>
> v3:
> * New patch
>
> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> .../devicetree/bindings/display/bridge/lvds-codec.yaml | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml b/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml
> index 8f373029f5d2..7c4e42f4de61 100644
> --- a/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml
> @@ -55,6 +55,14 @@ properties:
> description: |
> For LVDS encoders, port 0 is the parallel input
> For LVDS decoders, port 0 is the LVDS input
> + properties:
> + bus-width:
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32
> + - enum: [18, 24]
> + - default: 24
> + description:
> + Number of data lines used to transmit the RGB data.
This is a bit unclear. First of all, depending on whether the node is an
LVDS encoder or decoder, port@0 is either a parallel input or an LVDS
input. The property mentiones RGB data, does it mean it apply to LVDS
encoders only ? Or should it be in port@1 for LVDS decoders ?
Then, I'm not sure what the property describes. Is it the number of data
lanes that the chip has ? Or the number of lanes routed on the board ?
Should it be specified only if the number of lanes on the board is
different than the maximum number of lanes of the hardware ? A more
detailed description is needed.
Updating the example would also be useful.
>
> port@1:
> type: object
--
Regards,
Laurent Pinchart
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next prev parent reply other threads:[~2020-02-24 22:32 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-28 13:55 [PATCH v10 00/12] drm: Add support for bus-format negotiation Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 01/12] drm/bridge: Add a drm_bridge_state object Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 02/12] drm/rcar-du: Plug atomic state hooks to the default implementation Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 03/12] drm/bridge: analogix: " Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 04/12] drm/bridge: Patch atomic hooks to take a drm_bridge_state Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 05/12] drm/bridge: Add an ->atomic_check() hook Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 06/12] drm/bridge: Add the necessary bits to support bus format negotiation Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 07/12] drm/imx: pd: Use bus format/flags provided by the bridge when available Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 08/12] drm/bridge: lvds-codec: Implement basic bus format negotiation Boris Brezillon
2020-02-24 23:03 ` Laurent Pinchart
2020-02-25 6:15 ` Sam Ravnborg
2020-02-25 8:44 ` Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 09/12] dt-bindings: display: bridge: lvds-codec: Add new bus-width prop Boris Brezillon
2020-01-31 17:12 ` Sam Ravnborg
2020-01-31 17:23 ` Boris Brezillon
2020-02-24 22:31 ` Laurent Pinchart [this message]
2020-02-25 9:13 ` Boris Brezillon
2020-03-09 10:35 ` Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 10/12] drm/bridge: panel: Propage bus format/flags Boris Brezillon
2020-01-31 17:25 ` Boris Brezillon
2020-02-24 22:34 ` Laurent Pinchart
2020-02-25 8:45 ` Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 11/12] drm/panel: simple: Fix the lt089ac29000 bus_format Boris Brezillon
2020-01-28 13:55 ` [PATCH v10 12/12] ARM: dts: imx: imx51-zii-rdu1: Fix the display pipeline definition Boris Brezillon
2020-01-31 15:42 ` [PATCH v10 00/12] drm: Add support for bus-format negotiation Boris Brezillon
2020-01-31 16:51 ` Sam Ravnborg
2020-01-31 18:08 ` Daniel Vetter
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