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

From: Dmitry Baryshkov

Date: Wed Jun 03 2026 - 18:16:52 EST


On Wed, Jun 03, 2026 at 02:37:48PM -0700, Vijay Kumar Tumati wrote:
>
>
> On 6/3/2026 5:57 AM, Bryan O'Donoghue wrote:
> > On 03/06/2026 13:40, Dmitry Baryshkov wrote:
> > > > Are you sure about that ?
> > > Yes.
> > >
> > > > ipcat I thought designated lane 7 specifically as clk-lane i.e. named it
> > > > CLK_LN of some description.
> > > 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
> >
> > ... just a badly name field
> >
> > CSI_2PHASE_CTRL10
> >
> > Bit[2] = IS_CLKLANE
> >
> > Right so CSI_2PHASE_CTRL10 controls lane mode, indeed. Thanks for checking.
> I can check this with the HW team. Although the SWI has this knob, there may
> be some limitations to use any lane as the clk lane. AFAIK, only two
> specific lanes are clk capable in DPHY mode.>

Having clock-names property doesn't mean that all values are valid.

--
With best wishes
Dmitry