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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-kernel@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-Proofpoint-GUID: _yJrCnggANejYe_3tnTxQttSLL4wxCer X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjAyMDA4NCBTYWx0ZWRfX753dYmg36Dvg NV/Dm4MdXw5J16NXJeQ6lbbDCsgfwf0/TVT9r+BN8woIYfP8aW8OG0ak4wowtBkuCgZ/KPE5cDH xIMDL7hQ4AJuc8kCTL5J5/6g0pUSCkXAQgyP5zcXYzdK81Ljt0S6jf2/zOPElZOMhnW7+u8LH9v 0QzYjQg1/KIF85tH+HN8/RBJ5b8pjYvtjMRrZ1EMbiKCi2cwC1XvnEMFSFK2Otyy8Yu6Epwh8qP ruYE3CqCPw144DLtbeq7wFI83waYYnKr+lfUoUf/DKrDKYO77yuOgGUKQUCwJgOgZvQsCEb3Q7t O/la/OO+GUbEYh7gjHKYqFblRaAvLFVK/PLsKgYl3BFbo2Jmxmy827WvX40quAf82L5FrwPWbDT PW/T2YAz3SLobVHcbtHLVIvtUZsuKA== X-Authority-Analysis: v=2.4 cv=cPTtc1eN c=1 sm=1 tr=0 ts=692ec0b4 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=XKEg-W0rSRFBAHshmuIA:9 a=lqcHg5cX4UMA:10 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-ORIG-GUID: _yJrCnggANejYe_3tnTxQttSLL4wxCer 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 impostorscore=0 lowpriorityscore=0 bulkscore=0 adultscore=0 malwarescore=0 priorityscore=1501 clxscore=1015 phishscore=0 spamscore=0 suspectscore=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