linux-kernel - Re: [PATCH v2] regulator: qcom-rpmh: Add support for regulator-off-on-delay-us

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <62a844ac-c2b8-4791-bd3c-555993ccdcd7@sirena.org.uk>
Date: Wed, 28 Jan 2026 14:04:11 +0000
From: Mark Brown <broonie@...nel.org>
To: Saikiran B <bjsaikiran@...il.com>
Cc: Konrad Dybcio <konrad.dybcio@....qualcomm.com>, lgirdwood@...il.com,
	andersson@...nel.org, linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] regulator: qcom-rpmh: Add support for
 regulator-off-on-delay-us

On Wed, Jan 28, 2026 at 07:29:34PM +0530, Saikiran B wrote:

> However, to address the root cause of the camera brownout once and for all,
> I am now investigating porting the Active Discharge logic (sending specific
> voltage/mode resource commands) from similar Qualcomm sister boards into
> `qcom-rpmh-regulator`.

> That would be the superior hardware solution, eliminating the need for
> arbitrary delays. Since that involves complex RPMh resource handling and
> reverse-engineering the specific commands for this PMIC, it will take some
> time to implement and validate.

> I will hold off on pursuing this delay patch further until I have exhausted
> the Active Discharge path.

Yes, active discharge would definitely be a better solution.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)