linux-kernel - Re: [PATCH v2 1/2] dt-bindings: Pinefeat cef168 lens control board

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Message-Id: <20250814201038.15054-1-support@pinefeat.co.uk>
Date: Thu, 14 Aug 2025 21:10:38 +0100
From: Aliaksandr Smirnou <support@...efeat.co.uk>
To: krzk@...nel.org
Cc: conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	krzk+dt@...nel.org,
	linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org,
	mchehab@...nel.org,
	robh@...nel.org,
	support@...efeat.co.uk
Subject: Re: [PATCH v2 1/2] dt-bindings: Pinefeat cef168 lens control board

On Thu, 14 Aug 2025 11:04:10 +0200, Krzysztof Kozlowski wrote:
> You describe here the entire board, not the MCU only or lens motor
> only...

Since you asked about 5 V, I was explaining that this power source is not
relevant for the driver.

> Can the board be used outside of above setup? I understand so far this
> is only for Rpi where both above supplies - 3.3 V and 5 V - are coming
> from the header pins, so supplies would be totally redundant.

There are several variants of the board, differing only in physical size
and type of CSI connector, targeting different cameras. The board should
be compatible with any single-board computer that uses a similar CSI
connector pinout and MIPI signal lane assignment. For example, the NVIDIA
Jetson series replicates the Raspberry Pi camera and GPIO header pinout.
So yes, the board can be used outside of a Raspberry Pi setup.

As noted above, these supplies are redundant and were not included in the
driver description. Given that, is it acceptable to remove the vcc-supply
property?