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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b80464e01d9sm3907587966b.42.2025.12.31.08.20.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 31 Dec 2025 08:21:01 -0800 (PST) Message-ID: <00b59998-33e2-450f-bdef-db370c5d6e59@oss.qualcomm.com> Date: Wed, 31 Dec 2025 17:20:57 +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 08/14] arm64: dts: qcom: sdm845-db845c: specify power for WiFi CH1 To: Dmitry Baryshkov Cc: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bartosz Golaszewski , Marcel Holtmann , Luiz Augusto von Dentz , Jeff Johnson , Bjorn Andersson , Konrad Dybcio , Manivannan Sadhasivam , Vinod Koul , Balakrishna Godavarthi , Matthias Kaehlcke , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-wireless@vger.kernel.org, ath10k@lists.infradead.org, linux-pm@vger.kernel.org, Krzysztof Kozlowski References: <20251231-wcn3990-pwrctl-v1-0-1ff4d6028ad5@oss.qualcomm.com> <20251231-wcn3990-pwrctl-v1-8-1ff4d6028ad5@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=POcCOPqC c=1 sm=1 tr=0 ts=69554d6f cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=Q4P5HGrx6TCjuT4AK04A:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-ORIG-GUID: 4SHQIbQmxZTaZBV38SZvD_IUFRipzj7F X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjMxMDE0MyBTYWx0ZWRfXw7cyvQZuHPTG 1Tyy+GQ8qkoDjFhcuj1Ci79dAPsxwye/2lAQQSrFnJpXJfrhHOSnL5+bbrsAc0AF4snIw556zAJ WTHrvVW0M0z0pRdJ1Fr3Lp8VrY2PtpEvwkcoE471Kkvr1xYX8NgGTBNjY6NjRYyuGwf6UKzpdgd s8BLnePeib8jx7gJYY+uZTCEKwO2vL2tJrxDtmW4+lenyl1M7zzdlCftAipKT0y6D/UDXmUOKit Nd/n+ZVoRX0D6mLggh+yUEVO9rU16qWAvJn5iOSd+U2ACVn7yxsj8J/77cvd3lm7HeMf89TClQ0 nrBAiQ86EiwIWX6BtSqOKDLNJRYvlCjb2iSvwj/MVMclZr7b8G0/ksyFnax01U+7v3705a6fAdg 9Mn4nhoo5muhfDJwC97XIMixoP5Xu1rzx185RaPH4TFSRuKFi7FVWoNQvr+Ey0dB6Xm+SIbQt99 zPdMyoeHMrBsPq5te/A== X-Proofpoint-GUID: 4SHQIbQmxZTaZBV38SZvD_IUFRipzj7F X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-31_05,2025-12-31_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 adultscore=0 bulkscore=0 phishscore=0 clxscore=1015 priorityscore=1501 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512310143 On 12/31/25 5:19 PM, Dmitry Baryshkov wrote: > On Wed, Dec 31, 2025 at 01:09:49PM +0100, Konrad Dybcio wrote: >> On 12/31/25 12:35 AM, Dmitry Baryshkov wrote: >>> Specify power supply for the second chain / antenna output of the >>> onboard WiFi chip. >>> >>> Fixes: 3f72e2d3e682 ("arm64: dts: qcom: Add Dragonboard 845c") >>> Signed-off-by: Dmitry Baryshkov >>> --- >> >> I don't have schematics nearby, but jfyi downstream doesn't do that > > I checked in the schematics, it is L23A. > >> >>> arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 7 +++++++ >>> 1 file changed, 7 insertions(+) >>> >>> diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts >>> index ad283a79bcdb..5118b776a9bb 100644 >>> --- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts >>> +++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts >>> @@ -379,6 +379,12 @@ vreg_l21a_2p95: ldo21 { >>> regulator-initial-mode = ; >>> }; >>> >>> + vreg_l23a_3p3: ldo23 { >>> + regulator-min-microvolt = <3300000>; >>> + regulator-max-microvolt = <3312000>; >> >> Do we benefit from the 0.012V spread? >> >> (i.e. is there anything else on this rail?) > > I must admt jere, I just copied defition of the ch0 regulator. I think, > they should be the same. Alright Reviewed-by: Konrad Dybcio Konrad