Re: [PATCH v2 0/6] arm64: dts: qcom: nord: Add remoteproc and PMIC support

[Kamal Wadhwa]

On Wed, Sep 09, 2026 at 03:50:22PM +0200, Konrad Dybcio wrote:
> On 9/9/26 3:16 PM, Shawn Guo wrote:
> > On Wed, Sep 09, 2026 at 02:13:35PM +0200, Konrad Dybcio wrote:
> >> On 9/7/26 2:06 PM, Shawn Guo wrote:
> >>> On Fri, Sep 04, 2026 at 12:00:40PM +0200, Konrad Dybcio wrote:
> >>>> On 9/4/26 10:16 AM, Shawn Guo wrote:
> >>>>> This series adds ADSP and CDSP remoteproc support, the SPMI PMIC arbiter
> >>>>> and the PMIC descriptions for the Qualcomm Nord platform, and adds the
> >>>>> initial device tree for the Nord Ride Embedded board.
> 
> [...]
> 
> >>> - Supplies of Nord SoC
> >>>
> >>>   vreg_l7a_1p2     -->  VDD_PX14
> >>
> >> Does RPMH require HLOS to cast these votes? Generally such supplies
> >> should be taken care of in the fw
> > 
> > Good point! I just did a couple of tests by:
> > 
> > - dropping regulator-always-on/regulator-boot-on from these regulators
> > - dropping these regulators completely from DTS
> > 
> > Both booted fine (the nhlos software for Nord Embedded variant are still
> > under heavy development though).
> > 
> > So what do you prefer, dropping always-on/boot-on property or
> > the regulators completely?
> 
> I think it's best to reach out to the PMIC folks and ask what they think
> 
> +Kamal?

On Kaanapali i see that VDD_PX14 is actually controlled from the audio codec side.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/qcom/kaanapali-mtp.dts?h=v7.3-rc2#232
but better to confirm from the audio side.

+Ravi Hothi 
can you please clarify? if vreg_l7a_1p2 (VDD_PX14) needs to be controlled from APPS side for Nord?

Regards,
Kamal

> 
> Konrad