Re: [PATCH 1/4] dt-bindings: reset: add generic bit reset controller

From: Philipp Zabel
Date: Thu Feb 13 2025 - 05:24:37 EST


On Do, 2025-02-13 at 10:35 +0100, Krzysztof Kozlowski wrote:
> On Thu, Feb 13, 2025 at 10:08:54AM +0800, Inochi Amaoto wrote:
> > Some SoCs from Aspeed, Allwinner, Sophgo and Synopsys have
> > a simple reset controller by toggling bit. It is a hard time
> > for each device to add its own compatible to the driver.
> > Since this device share a common design, it is possible to
> > add a common device to reduce these unnecessary change.
>
> SoC components are rarely that simple and even if it is just a bit,
> usually it is part of one or few registers.

Yes, in those cases (which are probably most of them), I would argue
this binding doesn't really fit.

> Anyway, there are already bindings for reset-simple and I do not
> understand why this has to be duplicated.

I think the motivation is to not have to add a new binding document and
modify reset-simple.c every time there is a new SoC. I wonder if some
of this can be mitigated by adding just the binding document similar to
trivial-devices.yaml, without the actual "reset-simple" compatible.

>
regards
Philipp