Re: [PATCH v3 3/6] media: qcom: camss: csiphy-3ph: Add Gen2 v1.1 two-phase MIPI CSI-2 DPHY init

From: Bryan O'Donoghue
Date: Tue Nov 07 2023 - 19:36:08 EST


On 07/11/2023 21:43, Konrad Dybcio wrote:


On 11/5/23 18:45, Bryan O'Donoghue wrote:
Add a PHY configuration sequence for the sc8280xp 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. This configuration supports two-phase D-PHY mode.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
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Makes it sound like the current 2ph/3ph split is rather nonsensical?

Perhaps we should restructure it to match hw revision? Especially since
one can get it from the hardware itself..

Konrad

For the C-PHY though we have to either add or remove caps - I forget which on ~ all of our reference platforms.

"The PHY can do it" but I'd be surprised to find there's a single real implementation of it outside of a silicon test bench.

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bod