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

[Konrad Dybcio]

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.
>>>
>>> Tested on next-20260903
>>>
>>> Dependencies:
>>> - NMXC define: commit e484a765f543 ("dt-bindings: power: qcom,rpmhpd: Add NMXC power domain index")
>>>   from git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm.git dt
>>> - Base DTS: https://lore.kernel.org/all/20260903140617.441111-1-shengchao.guo@xxxxxxxxxxxxxxxx/
>>> - PMAU0102 MFD: https://lore.kernel.org/all/20260830034719.140213-1-shengchao.guo@xxxxxxxxxxxxxxxx/
>>> - PMAU0102 thermal: https://lore.kernel.org/all/20260830101025.191697-1-shengchao.guo@xxxxxxxxxxxxxxxx/
>>> - PMM8654AU RTC: https://lore.kernel.org/all/20260904074541.590485-1-shengchao.guo@xxxxxxxxxxxxxxxx/
>>>
>>> Changes for v2:
>>> - Align PMIC comments in nord-ride-embedded.dts with nord-rrd.dts
>>> - Drop unneeded regulator-always-on and regulator-boot-on from RPMh
>>>   regulators
>>
>> It still remains on something like 40% of the defined regulators
>> without any nearby comment justifying that - are all of these
>> intentional and necessary?
> 
> Yes, all of those are intentional.
> 
> - Supplies of LPDDR5
> 
>   vreg_s1a_vdd2h_l  -->  VDD2H_LPDDR5_01
>   vreg_s5g_vdd2h_h  -->  VDD2H_LPDDR5_23
>   vreg_l1k_vdd2l    -->  VDD2L_LPDDR5_01
>   vreg_l1f_vdd2l    -->  VDD2L_LPDDR5_23
>   vreg_l3k_vdd1     -->  VDD1_LPDDR5_01
>   vreg_l3f_vdd1     -->  VDD1_LPDDR5_23
> 
> - Supplies of PMICs
> 
>   vreg_l8a_1p8     -->  VDD_LDO_XO
>   vreg_s3a_1p8     -->  VDD_PX3 
>   vreg_s5a_mv      -->  VREG_LDO_MV
>   vreg_s7f_lv_sub  -->  VREG_LDO_LV
> 
> - 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

Konrad