linux-kernel - Re: [PATCH] testing! arm64: dts: qcom: decrease WiFi antenna regulator minimum to 3.0V

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: <d800d5cc-0e57-401a-a62a-42e9c40125f6@oss.qualcomm.com>
Date: Thu, 5 Feb 2026 10:05:13 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: david@...t.cz, 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>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org
Subject: Re: [PATCH] testing! arm64: dts: qcom: decrease WiFi antenna
 regulator minimum to 3.0V

On 2/4/26 6:03 PM, David Heidelberg via B4 Relay wrote:
> From: David Heidelberg <david@...t.cz>
> 
> Downstream defines minimal voltage as 3.0 V, while when OnePlus 6 was
> introduced to Linux mainline, the value was fixed to maximum 3.3V.
> 
> Signed-off-by: David Heidelberg <david@...t.cz>
> ---
> Tested for ~ 1 month. Seems to work well, no visible issues anywhere.
> ---
>  arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
> index 5b121ea5520f5..e950db41ce25a 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
> @@ -307,7 +307,7 @@ vreg_l20a_2p95: ldo20 {
>  		};
>  
>  		vreg_l23a_3p3: ldo23 {
> -			regulator-min-microvolt = <3300000>;
> +			regulator-min-microvolt = <3000000>;
>  			regulator-max-microvolt = <3312000>;
>  			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
>  		};
> @@ -320,7 +320,7 @@ vreg_l24a_3p075: ldo24 {
>  		};
>  
>  		vreg_l25a_3p3: ldo25 {
> -			regulator-min-microvolt = <3300000>;
> +			regulator-min-microvolt = <3000000>;
>  			regulator-max-microvolt = <3312000>;

A datasheet tells me this is out of spec for this wireless chip

Konrad