linux-kernel - Re: [PATCH v2 1/8] arm64: dts: qcom: x1e80100-crd: mark l12b and l15b always-on

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

Message-ID: <zhiunl3doj3d5rc2m3w2isnwloyyvtbbgiiuzbg3dxy342vnhy@n27ioyo2mhvm>
Date: Fri, 14 Mar 2025 18:36:19 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Johan Hovold <johan+linaro@...nel.org>
Cc: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, Abel Vesa <abel.vesa@...aro.org>,
        Rajendra Nayak <quic_rjendra@...cinc.com>,
        Sibi Sankar <quic_sibis@...cinc.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH v2 1/8] arm64: dts: qcom: x1e80100-crd: mark l12b and
 l15b always-on

On Fri, Mar 14, 2025 at 03:54:33PM +0100, Johan Hovold wrote:
> The l12b and l15b supplies are used by components that are not (fully)
> described (and some never will be) and must never be disabled.

Which components?

> 
> Mark the regulators as always-on to prevent them from being disabled,
> for example, when consumers probe defer or suspend.
> 
> Fixes: bd50b1f5b6f3 ("arm64: dts: qcom: x1e80100: Add Compute Reference Device")
> Cc: stable@...r.kernel.org	# 6.8
> Cc: Abel Vesa <abel.vesa@...aro.org>
> Cc: Rajendra Nayak <quic_rjendra@...cinc.com>
> Cc: Sibi Sankar <quic_sibis@...cinc.com>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
> ---
>  arch/arm64/boot/dts/qcom/x1-crd.dtsi | 2 ++
>  1 file changed, 2 insertions(+)
> 

-- 
With best wishes
Dmitry