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Tue, 16 Jun 2026 04:13:38 -0700 (PDT) X-Received: by 2002:a05:620a:458d:b0:915:769d:56e with SMTP id af79cd13be357-9161bab4498mr1747051785a.1.1781608417897; Tue, 16 Jun 2026 04:13:37 -0700 (PDT) Received: from [192.168.120.170] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bfdb7b6dbbcsm648217766b.32.2026.06.16.04.13.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 Jun 2026 04:13:36 -0700 (PDT) Message-ID: <12b8d20e-06a3-45c3-a02f-bde79f31e8ef@oss.qualcomm.com> Date: Tue, 16 Jun 2026 13:13:34 +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] arm64: dts: qcom: qcs615-ride: fix sdhc_2 vqmmc-supply for UHS-I mode To: monish.chunara@oss.qualcomm.com, andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org, ulf.hansson@linaro.org, nitin.rawat@oss.qualcomm.com, pradeep.pragallapati@oss.qualcomm.com, komal.bajaj@oss.qualcomm.com, jsodhapa@qti.qualcomm.com References: <20260522105020.3588377-1-mchunara@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260522105020.3588377-1-mchunara@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjE2MDExNCBTYWx0ZWRfX+qwwTmCWJV/l uv4XCCO6LX6cSfuqg5XZkVyDanRfYOcUtLnZP3CyeaFV6XGG1vv2mvavTdoI3z6NmZXVk5h5lmI FfbewGWOrvkqaSTHCZvEtP7A3s8nIS7bUi0nZjo+p8ytZt5TF7W4owA1pCMRkJdhoICdcykUeMo 1VdoV0H2jjj1QAwDNqOYXTlXTOsUnGrZr59z/AYESZSz6ZF/PZ5CmnDveyNnPBQMkeH3Lm9j85J /gnivmnFw2FTz22SZn2DG51pi7M6na3+FwRQMZfkd6JCM8++Tt0UXXEAOMM4dCmbyfnklpvGBmK ruVTpUHpRkN8IbVRhMXoxIykhBqrS5XTOGzf1ajpq9WE8XmPP4Ik4RvIRFBWjlgSHGVTbKkg/JL BFbh06aA3DPmEIYRIRdYAvy7adR919q7/N2jKX8WAOjix3KL2hqGtd4E5YS5oiDBFVU37rMjsCL i8IG0d7PHAM1cIVZ4vg== X-Proofpoint-ORIG-GUID: UxTIO_dZ-Bn9qhex15VclRDAutPG4rNK X-Proofpoint-Spam-Info: AW1haW4tMjYwNjE2MDExNCBTYWx0ZWRfX4WqsowYp7gCn xoLSUEGyPA8C7/B7wzgHDsqvXzVqPYo7d1ErqCwk19P/VrrVgv0FUDlh/s2Q27jb9PabBCr+x00 Zz97aOW0Z6VSn03VhKdw8nOEWdQLKMc= X-Authority-Analysis: v=2.4 cv=DLa/JSNb c=1 sm=1 tr=0 ts=6a312fe2 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=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=6BLkkuY0k0j_y3qHMkoA:9 a=QEXdDO2ut3YA:10 a=zgiPjhLxNE0A:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-GUID: UxTIO_dZ-Bn9qhex15VclRDAutPG4rNK 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 impostorscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 malwarescore=0 priorityscore=1501 phishscore=0 suspectscore=0 bulkscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606040000 definitions=main-2606160114 On 5/22/26 12:50 PM, monish.chunara@oss.qualcomm.com wrote: > From: Monish Chunara > > SD card is detected as SDHS instead of UHS-I because sdhc_2 was > configured with vreg_s4a as vqmmc-supply, which cannot switch > between 1.8V and 3.3V. > > Switch vqmmc-supply to vreg_l2a and update its voltage range to > 1800000-2960000 uV to enable proper UHS-I signaling. The way the commit message is worded almost makes it sound like switching the supply in DT rewires the hardware power grid.. anyway Reviewed-by: Konrad Dybcio Konrad