Messages in this thread | | | Date | Wed, 21 Feb 2024 09:58:23 +0000 | Subject | Re: [PATCH] regulator: qcom-rpmh: Fix pm8010 pmic5_pldo502ln minimum voltage | From | Bryan O'Donoghue <> |
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On 21/02/2024 9:11 a.m., Fenglin Wu wrote: > > So, programming it to either 1.8V or 1.808V, the HW will output 1.8V. I > understand there is a problem for x1e801000 because its AOP side limits > the voltage range to [1.808V, 1.808V] for LDO3/4/6 power rails, it won't > work if linux side updates to use 1.8V. Actually the same issue applies > to SM8550 and SM8650 if you simply update the voltage level to 1.808V, > because their AOP side limits the voltage ranges for some of these LDOs > to [1.8V, 1.8V].
Hmm.
We have no use case for 1.808 to my knowledge - the sensors take voltages in the range 1.7 to 1.9 volts.
TBH I think it should work just fine at 1.8v bang on.
I'll test this theory on the reference hardware and repost either a patch or further discussion.
But I think we should probably just leave what you've upstreamed and request 1.8 v in the dts honestly.
Thanks
--- bod
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