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Tue, 16 Jun 2026 05:22:52 -0700 (PDT) X-Received: by 2002:a05:620a:40d1:b0:8cf:d289:d0f3 with SMTP id af79cd13be357-9161bca6345mr1765197085a.4.1781612572365; Tue, 16 Jun 2026 05:22:52 -0700 (PDT) Received: from [192.168.120.170] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bfdb5103710sm636854066b.22.2026.06.16.05.22.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 Jun 2026 05:22:51 -0700 (PDT) Message-ID: <38dcea05-581c-411f-9196-caac9562d412@oss.qualcomm.com> Date: Tue, 16 Jun 2026 14:22:48 +0200 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 v2 3/4] arm64: dts: qcom: x1-dell-thena: mark l12b and l15b always-on To: Michael Scott , linux-arm-msm@vger.kernel.org Cc: vkoul@kernel.org, neil.armstrong@linaro.org, dmitry.baryshkov@oss.qualcomm.com, wesley.cheng@oss.qualcomm.com, abelvesa@kernel.org, faisal.hassan@oss.qualcomm.com, linux-phy@lists.infradead.org, andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, val@packett.cool, bryan.odonoghue@linaro.org, laurentiu.tudor1@dell.com, alex.vinarskis@gmail.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org References: <20260521010935.1333494-1-mike.scott@oss.qualcomm.com> <20260521010935.1333494-4-mike.scott@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260521010935.1333494-4-mike.scott@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=I/ZVgtgg c=1 sm=1 tr=0 ts=6a31401d cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=KdsBoOkKT-vHJQxM7ZgA:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjE2MDEyNSBTYWx0ZWRfXztiFJLrMNB5v KtlcRf1TSnJ9Bb87Ft+hoXdNRf6ZGHozuWG4cAcv4kOrFshnmdjUmHWB1Rg+NWOYYUHivL2gS0P m/h7YM/bZMbhnDU0HQGk0f5IVxGTjyU= X-Proofpoint-ORIG-GUID: coXqCzBhdwu3DYjt9OuvRYRDeuI1Jsl6 X-Proofpoint-GUID: coXqCzBhdwu3DYjt9OuvRYRDeuI1Jsl6 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjE2MDEyNSBTYWx0ZWRfX75dXyDq1GtVm Uv/uyyxsDQG0kZm3xwEWW6TQIQZ9e6Qs3JTlXuSyBnyxxlFLgCANGaYyL2qHkV/zL/nE+CNc0kq NMud7wK6s3XJTHs09u8xTCoc3SGlh7B+eUzFfNCW4g4YKlkp8vQMbuUE8wSMkA2RvQIMvqzZgNV AHuPWMJ0DTuR6J+2rwBY6iTmZm50zSyspgGWYu8s/Uxq09czNioru0QVmIaSkbaLrQdummmAEXi qvsewDDTLkM7T0yWJbzioG1pV+Ji5BB771/pgHE4G/73HiutxYXMjOG7CNDK8LMQi4pk45AEOWW 14zSWTzwrrRUT7fnZcX5QepM/4o67u9BW11SLgDvxxHY6Sy4Q6MdPZrvG0xxiSIUX9UZ1tnxQwo gAZj9PmJRA+TWaTIykg7+0OMO759Vduw3gU/E00gYRG1HsQinB+nXR4en+JFsxtijZ/1gqYPJfb HAMhQhggXETwo7NtsYg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-16_03,2026-06-15_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 phishscore=0 adultscore=0 malwarescore=0 spamscore=0 clxscore=1015 suspectscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606040000 definitions=main-2606160125 On 5/21/26 3:09 AM, Michael Scott 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. > > Mark the regulators as always-on to prevent them from being disabled, > for example, when consumers probe defer or suspend. > > Note that these supplies currently have no consumers described in > mainline for dell-thena beyond the audio codec (vdd-buck/vdd-rxtx/ > vdd-io on wcd938x), which can release them when the codec goes idle. > The board-level gpio-fixed regulators that feed the Type-C retimer's > VDDIO and other rails are not described with a vin-supply link, so > the kernel cannot keep their parent LDOs alive on its own. > > This mirrors the same change Johan Hovold applied to every other > X1E80100 board in a March 2025 series; commit 63169c07d740 > ("arm64: dts: qcom: x1e80100-dell-xps13-9345: mark l12b and l15b always-on") > is representative. The dell-thena board file was introduced four months > later and did not inherit that change; this patch closes the gap. > > Fixes: e7733b42111c ("arm64: dts: qcom: Add support for Dell Inspiron 7441 / Latitude 7455") > Cc: stable@vger.kernel.org > Signed-off-by: Michael Scott > --- Reviewed-by: Konrad Dybcio Konrad