Re: [PATCH v7 0/8] media: camss: Add support for C-PHY configuration on Qualcomm platforms

[Bryan O'Donoghue <bod@kernel.org>]

On 05/06/2026 14:14, David Heidelberg via B4 Relay wrote:
> Note: WIP tag added, as not everything from the previous review round has
> been addressed.
> 
> # Short summary
> 
> This patch series extends the Qualcomm CAMSS (Camera Subsystem),
> including CSID and CSIPHY components, to support C-PHY mode configuration.
> 
> # Background and motivation
> 
> Modern smartphone cameras increasingly rely on MIPI C-PHY rather than
> D-PHY, thanks to its higher data throughput and signal efficiency.
> As a result, many OEMs adopt C-PHY interfaces for main (rear) cameras on
> Qualcomm-based devices.
> 
> Until now, mainline Linux lacked C-PHY configuration support for Qualcomm
> chipsets, preventing bring-up of primary camera sensors on several
> Snapdragon platforms. This series closes that gap.
> 
>   - Introduces C-PHY configuration support for the CAMSS driver stack,
>     covering both CSID and CSIPHY blocks.
>   - Successfully enables C-PHY operation on the Snapdragon 845 platform.
>   - Tested on OnePlus 6 and 6T phones running mainline Linux,
>     using the Sony IMX519 main camera sensor.
>   - The new configuration allows other chipsets versionsto enable C-PHY by
>     simply adding corresponding sensor driver support and csiphy
>     initialization data, following the example set for sdm845.
> 
> With this patch series, mainline Linux gains working C-PHY support for
> Snapdragon 845, paving the way for improved main camera functionality
> across many Qualcomm-based devices. The groundwork also simplifies
> future enablement efforts for additional SoCs and sensors.
> 
> Until merged, the series will be also available at:
>    https://codeberg.org/sdm845/linux/commits/branch/b4/qcom-cphy
> 
> Signed-off-by: David Heidelberg <david@ixit.cz>
> ---
> Changes in v7:
> - Move logic out of switch. (Frank)
> - Change csid cphy knob to phy_sel using enum. (Bryan, Frank)
> - Link to v6: https://lore.kernel.org/r/20260603-qcom-cphy-v6-0-e50de0b557a8@ixit.cz
So I was asking you previously about a dts to support this in some way 
in effect to prove it works.

I had a meeting with some qcom guys on Friday and the informed me they 
have based work on top of yours, which is inference enough that it works.

Some Tested-by: from others interested in this work, would be greatly 
appreciated at this stage.

---
bod