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Tue, 12 Aug 2025 12:37:28 -0700 (PDT) From: Aliaksandr Smirnou To: krzk@kernel.org Cc: conor+dt@kernel.org, devicetree@vger.kernel.org, krzk+dt@kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@kernel.org, robh@kernel.org, support@pinefeat.co.uk Subject: [PATCH v2 1/2] dt-bindings: Pinefeat cef168 lens control board Date: Tue, 12 Aug 2025 20:37:22 +0100 Message-Id: <20250812193722.10193-1-support@pinefeat.co.uk> X-Mailer: git-send-email 2.34.1 In-Reply-To: <84262447-0877-4c52-8c80-65f1288e5944@kernel.org> References: <84262447-0877-4c52-8c80-65f1288e5944@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On Tue, 12 Aug 2025 09:13:22 +0200, Krzysztof Kozlowski wrote: > Property says VCC, description says VDD, datasheet says 5V (not 3.3V). > > I guess this should be for the 5V case, no? Thank you following up. The 5V line is used exclusively to power the lens motor (through the power switch). This 5V supply can come from the Raspberry Pi GPIO header, a battery, or other sources. Importantly, this power source is independent of the board’s MCU and its kernel driver. Additionally, the board does not include any voltage regulators. The MCU operates at 3.3V, which is supplied either via the CSI connector or the serial connector directly from the Raspberry Pi GPIO 3.3V rail. Therefore, the driver does not manage any regulator, which is why the “vcc-supply” property was absent in the binding. Would you like me to remove the “vcc-supply” property as it was originally?