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From: Marek Vasut <marek.vasut@mailbox.org>
To: Maxime Ripard <mripard@kernel.org>
Cc: dri-devel@lists.freedesktop.org, Joseph Guo <qijian.guo@nxp.com>,
	Conor Dooley <conor+dt@kernel.org>,
	David Airlie <airlied@gmail.com>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Jonas Karlman <jonas@kwiboo.se>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Rob Herring <robh@kernel.org>, Robert Foss <rfoss@kernel.org>,
	Simona Vetter <simona@ffwll.ch>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org,
	Luca Ceresoli <luca.ceresoli@bootlin.com>
Subject: Re: [PATCH v2 2/2] drm/bridge: waveshare-dsi: Add support for 1..4 DSI data lanes
Date: Tue, 3 Mar 2026 13:59:58 +0100	[thread overview]
Message-ID: <13afd1fc-7201-4210-a697-8977d47857e7@mailbox.org> (raw)
In-Reply-To: <20260303-free-kudu-from-vega-20fb3e@houat>

On 3/3/26 8:56 AM, Maxime Ripard wrote:
> On Mon, Mar 02, 2026 at 10:35:31PM +0100, Marek Vasut wrote:
>> On 2/6/26 12:48 PM, Marek Vasut wrote:
>>> On 1/15/26 3:39 AM, Marek Vasut wrote:
>>>> Parse the data lane count out of DT. Limit the supported data lanes
>>>> to 1..4 which is the maximum available DSI pairs on the connector of
>>>> any known panels which may use this bridge. Internally, this bridge
>>>> is an ChipOne ICN6211 which loads its register configuration from a
>>>> dedicated storage and its I2C does not seem to be accessible. The
>>>> ICN6211 also supports up to 4 DSI lanes, so this is a hard limit.
>>>>
>>>> To avoid any breakage on old DTs where the parsing of data lanes from
>>>> DT may fail, fall back to the original hard-coded value of 2 lanes and
>>>> warn user.
>>>>
>>>> The lane configuration is preconfigured in the bridge for each of the
>>>> WaveShare panels. The 13.3" DSI panel works with 4-lane configuration,
>>>> others seem to use 2-lane configuration. This is a hardware property,
>>>> so the actual count should come from DT.
>>>>
>>>> Reviewed-by: Joseph Guo <qijian.guo@nxp.com>
>>>> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
>>>
>>> Is it OK to apply these two patches now ?
>>
>> Can this be applied now ?
> 
> It looks like you have a reviewed-by already, what's stoping you from
> applying it yourself?
I generally try to avoid applying my own patches, but if that is OK 
here, I will apply them ?

  reply	other threads:[~2026-03-03 13:00 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-15  2:39 [PATCH v2 1/2] dt-bindings: display: bridge: waveshare,dsi2dpi: Document 1..4 DSI lane support Marek Vasut
2026-01-15  2:39 ` [PATCH v2 2/2] drm/bridge: waveshare-dsi: Add support for 1..4 DSI data lanes Marek Vasut
2026-02-06 11:48   ` Marek Vasut
2026-03-02 21:35     ` Marek Vasut
2026-03-03  7:56       ` Maxime Ripard
2026-03-03 12:59         ` Marek Vasut [this message]
2026-03-03 13:32           ` Luca Ceresoli
2026-03-03 14:15             ` Marek Vasut
2026-03-03 13:24   ` Luca Ceresoli
2026-01-15 20:01 ` [PATCH v2 1/2] dt-bindings: display: bridge: waveshare,dsi2dpi: Document 1..4 DSI lane support Rob Herring (Arm)
2026-03-03 13:42 ` Luca Ceresoli

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