Re: [PATCH v8 2/2] phy: qcom-mipi-csi2: Add a CSI2 MIPI DPHY driver

[Bryan O'Donoghue]

On 03/06/2026 21:42, Vladimir Zapolskiy wrote:
> > > Split configurations explicitly use other lanes for clocks. E.g. check
> > > the RB5 Navigation schematics, CAM0B connector.
> > Can you please check:
> >
> > CSI_3PHASE_COMMON.CSI_COMMON_CTRL5
> >
> > 0 LN0_PWRDN_B Lane 0
> > ...
> > 7 LNCK_PWRDN_B Clock Lane
> Please note that media devices have a numeration scheme of lanes starting
> from 1 (it'd be easy to check/confirm it), for instance today CAMSS has
> lane numeration starting from 0 is out of the accepted scheme, and here
> it'd be better to correct it and not enter the same pit.

Yes fair point CAMSS has done this wrong since forever. data-lanes = <1 
2 3 4> => LN0, LN1, LN2, LN3>
> I don't have access to the IP spec, anyway I do not grasp it, where are
> 8 lanes on the CSIPHY found? Each CSIPHY IP has 4+1 D-PHY lanes, not 8.

Max CSI2 data-lanes is 8

#define V4L2_MBUS_CSI2_MAX_DATA_LANES          8

That doesn't really explain why this register has seven data-lanes and 
one-clock lane.

It just is what it is.

---
bod