Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 6 Nov 2023 21:39:42 +0100 | Subject | Re: [PATCH] arm64: dts: imx8mn-var-som-symphony: add vcc supply for PCA9534 | From | Krzysztof Kozlowski <> |
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On 06/11/2023 19:57, Hugo Villeneuve wrote: > From: Hugo Villeneuve <hvilleneuve@dimonoff.com> > > The following warning is shown when probing device: > > pca953x 1-0020: supply vcc not found, using dummy regulator > > Add fixed 3.3v regulator as vcc supply to silence the warning. >
This is not really a warning. It's perfectly fine to use dummy regulator. Adding such fixed supply has sense in following cases: 1. Bindings require the supply, 2. This is in fact exactly that supply (verified on schematics).
Best regards, Krzysztof
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