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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8e9feeff51sm199400966b.39.2026.02.05.01.05.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 05 Feb 2026 01:05:15 -0800 (PST) Message-ID: Date: Thu, 5 Feb 2026 10:05:13 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] testing! arm64: dts: qcom: decrease WiFi antenna regulator minimum to 3.0V To: david@ixit.cz, Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org References: <20260204-oneplus6-wifi-voltage-v1-1-ee6fd47f9d02@ixit.cz> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260204-oneplus6-wifi-voltage-v1-1-ee6fd47f9d02@ixit.cz> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjA1MDA2NSBTYWx0ZWRfX7z5FrPj/1sYQ fFQq90t8kNaL7XMNjg6T7Dmyisq4s3y4hBzLrX6XZ6x8uoYuEGkCsMadBkOuQxQszTNPqiQeHDi 7BOBceK9/uGcfPu4yung0rF3S/S9Cc2DqkWyiS3zcBXi/2IsGhW8q2i/NxQ6iqpGzU2DOpM2iYV 6uIlaoQ+piRNdCxr4f7eoyg/mcwW02LN99gRfaVxCHI9JY9zEAEH7WIABJAtvi5g1RRiD7wc5D3 dNOi7ksPW9hT7l4BIYv0u7n4MrRiRQgnSHxF3DZ8DNan5pYY2eFM0jlOSFjkufiVxdQ6tMYiuGQ YeEcIlEy7Eg3CvucvIlbS9KzpEQijxJPWr+X1H1Qz+urPMsanuLc4uNNZovxWWHaRs1xn1iXL9P 7W1xhy8j72Wz+2TOHYg7xfcDNOAcm0ykJC3AMRos5wlkZBKH3Rc50HzL7W5vlSquQ/FubDnJkEn Lf/4tW3Eui2Uo3Ao+8w== X-Authority-Analysis: v=2.4 cv=ZITaWH7b c=1 sm=1 tr=0 ts=69845d4d cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=o67kmj3H2-0caDlAT-4A:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-ORIG-GUID: gc3we7eSzxCbYlypsClmwf3TLSz3dsjJ X-Proofpoint-GUID: gc3we7eSzxCbYlypsClmwf3TLSz3dsjJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-05_01,2026-02-05_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 malwarescore=0 phishscore=0 bulkscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602050065 On 2/4/26 6:03 PM, David Heidelberg via B4 Relay wrote: > From: David Heidelberg > > 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 > --- > 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 = ; > }; > @@ -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