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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b76f5a5f979sm1459361166b.69.2025.12.02.02.34.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 02 Dec 2025 02:34:26 -0800 (PST) Message-ID: <6030bf44-c239-497f-811d-2afc0e5aa926@oss.qualcomm.com> Date: Tue, 2 Dec 2025 11:34:24 +0100 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 10/12] arm64: dts: qcom: sdm845-lg-judyln: Add lab/ibb To: Paul Sajna , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , David Heidelberg Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org, Amir Dahan , Christopher Brown References: <20251125-judyln-dts-v4-0-a5a60500b267@postmarketos.org> <20251125-judyln-dts-v4-10-a5a60500b267@postmarketos.org> <09e5d84c-39b7-45a9-b7d7-9beb54fb2f3f@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=VNzQXtPX c=1 sm=1 tr=0 ts=692ec0b4 cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=XKEg-W0rSRFBAHshmuIA:9 a=lqcHg5cX4UMA:10 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 X-Proofpoint-ORIG-GUID: 1nvqGtSSKRsPq0T6QGD2QpxbiC3uA8NY X-Proofpoint-GUID: 1nvqGtSSKRsPq0T6QGD2QpxbiC3uA8NY X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjAyMDA4NCBTYWx0ZWRfX9Q0XeC1KT56d yt8TNYwsTJVlD5TPxL8JbMMc6lp+sIX8T8rG89zFFS6QNE+HPiMojCoMqLq2IBq+oF6JnhoApjM 8xphoPFGwBPIW7E1fMlngugBA+WzK4ecW/4i4vZ7MoIIjWjhWGbXFi2ODXkx0P0AASVtyD8LPH8 wwHxhA/YHw6kFt9M2ku0HGUhBcjIGUH1aWwBE18TX1sZzI5qp7QUmN+Vuq4Y57LwhRnyFSzOwyk 5TLD4TQ1tzw/7ffgt1LdoNiP/GPR4t0n9rr7XB6eIEyb4xPoUErQr9mMAyWymAeFZYDeTihiq8f I4ADcUp58XUFlYHf/4vZ8LgcYRGL8nWJTC0LrkIh8O+7AckKksOSMZFP4Tl5HnD7fF/jBUdCgmg H84TvHHQHcNT11VMR/DL7QO0ViU83A== 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=2025-12-01_01,2025-11-27_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 bulkscore=0 clxscore=1015 impostorscore=0 spamscore=0 adultscore=0 phishscore=0 suspectscore=0 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2512020084 On 12/2/25 5:21 AM, Paul Sajna wrote: > December 1, 2025 at 12:38 PM, "Konrad Dybcio" wrote: > >> Sorry for not responding earlier, you can retrieve the actual volt >> numbers from the hardware by reading >> >> PMI8998_IBB_REG_BASE + REG_LABIBB_VOLTAGE = 0xdc41 >> >> ibb_uV = 1.4 + .1 * val >> >> PMI8998_LAB_REG_BASE + REG_LABIBB_VOLTAGE = 0xde41 >> >> lab_uV = 4.6 + .1 * val >> >> Konrad >> > > I found it in sysfs along the lines of your previous suggestion instead. > > ``` > 1|judyln:/ # cat /sys/kernel/debug/regulator/c440000.qcom,spmi:qcom,pmi8998@3:qpnp-labibb-regulator-ibb_reg/voltage > 5500000 > judyln:/ # cat /sys/kernel/debug/regulator/c440000.qcom,spmi:qcom,pmi8998@3:qpnp-labibb-regulator-lab_reg/voltage > 5500000 > ``` That works too Konrad