Re: [PATCH v3 1/2] dt-bindings: phy: qcom: Add CSI2 C-PHY/DPHY schema

From: Dmitry Baryshkov

Date: Tue Mar 03 2026 - 17:32:30 EST


On Mon, Mar 02, 2026 at 05:51:24PM -0800, Vijay Kumar Tumati wrote:
> Hi Bryan,
>
> On 2/26/2026 4:34 AM, Bryan O'Donoghue wrote:
> > + power-domains = <&camcc CAM_CC_TITAN_TOP_GDSC>;
> As we are cleaning up the PHY device nodes, we should consider fixing the
> power domains as well. Although TOP GDSC is defined as a power domain, it is
> not the power source for the PHY devices. Rather, it is the MMCX, MXC and
> optionally MXA based on the architecture (Refer to 'Voltage rail' column for
> PHY clocks in IPCAT). There is no
> parent-child relationship between the TOP GDSC and these in the clock driver
> and it was just working as the required power rails are getting enabled
> by/for other MM devices.

Which domains are required to access CSI PHY registers?

> > +
> > + vdda-0p8-supply = <&vreg_l2c_0p8>;
> > + vdda-1p2-supply = <&vreg_l1c_1p2>;
> > + };
> > +

--
With best wishes
Dmitry