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: <a657284f-a408-48a8-b294-0add65b3e2a2@sirena.org.uk>
Date:   Mon, 3 Apr 2023 19:28:17 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     Devi Priya <quic_devipriy@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, lgirdwood@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        quic_srichara@...cinc.com, quic_gokulsri@...cinc.com,
        quic_sjaganat@...cinc.com, quic_kathirav@...cinc.com,
        quic_arajkuma@...cinc.com, quic_anusha@...cinc.com,
        quic_ipkumar@...cinc.com
Subject: Re: [PATCH V2 4/6] regulator: qcom_smd: Add support to define the
 bootup voltage

On Mon, Apr 03, 2023 at 08:21:25PM +0200, Konrad Dybcio wrote:
> On 3.04.2023 20:14, Mark Brown wrote:

> > than up to the minimum.  The driver could also look at the constraints
> > when guessing at the hardware configuration rather than claiming an out
> > of spec voltage, this would mean we wouldn't need to correct anything.

> Hm, all of what you said sounds like a valid concern.. And then we
> probably shouldn't shoot up to max by default, as going too low is
> not going to cause as much potential irreversible damage as going
> too high.. Especially with programmer error..

It sounds like the driver should just be reporting a value which is at
least within the constraints.

> Too bad Qualcomm's firmware architecture doesn't allow for reading
> back the voltage..

Right, their interfaces here have some serious drawbacks.

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

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ