Re: [PATCH RESEND v9 6/9] media: qcom: camss: csiphy-3ph: Add Gen2 v1.1 MIPI CSI-2 C-PHY init

From: David Heidelberg

Date: Thu Jul 30 2026 - 06:09:43 EST

On 30/07/2026 11:31, Bryan O'Donoghue wrote:
On 30/07/2026 10:15, David Heidelberg wrote:
On 29/07/2026 23:35, Frank Li wrote:
On Wed, Jul 29, 2026 at 10:20:01PM +0200, David Heidelberg wrote:
Add a PHY configuration sequence for the sdm845 which uses a Qualcomm
Gen 2 version 1.1 CSI-2 PHY.

The PHY can be configured as two phase or three phase in C-PHY or D-PHY
mode.
too much or, according to my understand D-PHY use 2 phase,  C-PHY use 3
phase?

The PHY can be configured as two phase (D-PHY) or three phase (C-PHY) ?
Yes, I'll address the wrong wording in the next version then 🙂

Can you look at what's required to convert to the new driver ?

Hello Bryan,

If someone is interested in sponsoring my work, I'd be happy to spend more time on C-PHY-related development. Otherwise, the best I can realistically do is address minor polish and nitpicks on this generally reviewed series.

I'm always happy to see improvements to existing kernel structures. However, if pursuing those improvements delays C-PHY adoption in Linux mobile phones, it works against my current goals.

Please let me know either way, so I know whether I should continue looking into the existing code.

Thanks,
David



I think some Linux plumbing to represent cphy v dphy to the phy subsystem might be nice, plus differentiating inside of the new driver and camss with media- graph used to find the PHY.

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bod

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David Heidelberg