From: Marek Vasut <marex@denx.de>
To: Liu Ying <victor.liu@oss.nxp.com>, Nikolaus Voss <nv@vosn.de>,
Alexander Stein <alexander.stein@ew.tq-group.com>,
Liu Ying <victor.liu@nxp.com>,
Luca Ceresoli <luca.ceresoli@bootlin.com>,
Fabio Estevam <festevam@denx.de>,
Andrzej Hajda <andrzej.hajda@intel.com>,
Neil Armstrong <neil.armstrong@linaro.org>,
Robert Foss <rfoss@kernel.org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Jonas Karlman <jonas@kwiboo.se>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Luca Ceresoli <luca.ceresoli@bootlin.com>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
nikolaus.voss@haag-streit.com
Subject: Re: [PATCH] drm: bridge: fsl-ldb: fixup mode on freq mismatch
Date: Mon, 2 Dec 2024 13:56:38 +0100 [thread overview]
Message-ID: <50ee0207-b37a-4a6a-83fe-32a7a43645ce@denx.de> (raw)
In-Reply-To: <1f0a307a-666f-4647-9f73-e9bddd6c7eff@oss.nxp.com>
On 12/2/24 7:32 AM, Liu Ying wrote:
> On 11/27/2024, Nikolaus Voss wrote:
>> LDB clock has to be a fixed multiple of the pixel clock.
>> As LDB and pixel clock are derived from different clock sources
>> (at least on imx8mp), this constraint cannot be satisfied for
>> any pixel clock, which leads to flickering and incomplete
>> lines on the attached display.
>>
>> To overcome this, check this condition in mode_fixup() and
>> adapt the pixel clock accordingly.
>>
>> Cc: <stable@vger.kernel.org>
>
> It looks like stable is not effectively Cc'ed.
> Need a Fixes tag?
Isn't this fix effectively superseded by series
[PATCH 0/5] clk: Fix simple video pipelines on i.MX8
?
next prev parent reply other threads:[~2024-12-02 13:04 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-26 15:45 Nikolaus Voss
2024-11-26 18:20 ` Luca Ceresoli
2024-11-30 9:35 ` Dmitry Baryshkov
2024-11-30 18:57 ` Nikolaus Voss
2024-11-30 20:14 ` Dmitry Baryshkov
2024-12-02 6:32 ` Liu Ying
2024-12-02 10:13 ` Nikolaus Voss
2024-12-03 2:22 ` Liu Ying
2024-12-03 3:12 ` Marek Vasut
2024-12-03 7:20 ` Nikolaus Voss
2024-12-03 23:40 ` Marek Vasut
2024-12-04 10:55 ` Nikolaus Voss
2024-12-07 11:30 ` Marek Vasut
2024-12-09 8:46 ` Nikolaus Voss
2024-12-09 21:46 ` Marek Vasut
2024-12-11 16:54 ` Nikolaus Voss
2024-12-03 7:54 ` Nikolaus Voss
2024-12-23 9:44 ` Liu Ying
2024-12-09 7:41 ` Martin Kepplinger
2024-12-02 12:56 ` Marek Vasut [this message]
2024-12-02 17:03 ` Nikolaus Voss
2024-12-02 19:11 ` Marek Vasut
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