Re: [PATCH] arm64: dts: imx8mn-var-som-symphony: add vcc supply for PCA9534

[Krzysztof Kozlowski]

On 06/11/2023 19:57, Hugo Villeneuve wrote:
> From: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>
> 
> 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