Re: [PATCH v2 3/7] dt-bindings: HID: i2c-hid: elan: add 'no-reset-on-power-off' property

Krzysztof Kozlowski
2024-05-08T07:29:28Z

On 07/05/2024 16:48, Johan Hovold wrote:
> When the power supply is shared with other peripherals the reset line
> can be wired in such a way that it can remain deasserted regardless of
> whether the supply is on or not.
>
> This is important as it can be used to avoid holding the controller in
> reset for extended periods of time when it remains powered, something
> which can lead to increased power consumption. Leaving reset deasserted
> also avoids leaking current through the reset circuitry pull-up
> resistors.
>
> Add a new 'no-reset-on-power-off' devicetree property which can be used
> by the OS to determine when reset needs to be asserted on power down.
>
> Note that this property can also be used when the supply cannot be
> turned off by the OS at all.
>
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof