github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-30 01:53:29 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

media: stm32: dcmipp: avoid naming clock if only one is needed

Browse Source 
When DCMIPP requires only a single clock (kclk), avoid relying on its
name to obtain it. The introduction of MP25 support added the mclk,
which necessitated naming the first clock kclk. However, this breaks
backward compatibility with existing MP13 device trees that do not
specify clock names.

Fixes: 686f27f7ea ("media: stm32: dcmipp: add core support for the stm32mp25")
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Cc: Stable@vger.kernel.org # 6.14.x: 7f487562af49 media: stm32: dcmipp: correct ret type in dcmipp_graph_notify_bound
Cc: Stable@vger.kernel.org # 6.14.x: c715dd62da30 media: stm32: dcmipp: add has_csi2 & needs_mclk in match data
Cc: Stable@vger.kernel.org # 6.14.x:
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Alain Volmat 2025-12-15 13:10:19 +01:00 committed by Hans Verkuil
parent 4d4135dd95
commit 2f130245f2
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c
View File

@ -526,7 +526,12 @@ static int dcmipp_probe(struct platform_device *pdev)
return ret;
}
kclk = devm_clk_get(&pdev->dev, "kclk");
/*
* In case of the DCMIPP has only 1 clock (such as on MP13), the
* clock might not be named.
*/
kclk = devm_clk_get(&pdev->dev,
dcmipp->pipe_cfg->needs_mclk ? "kclk" : NULL);
if (IS_ERR(kclk))
return dev_err_probe(&pdev->dev, PTR_ERR(kclk),
"Unable to get kclk\n");