linux-kernel - Re: [PATCH] dt-bindings: mfd: aspeed: Drop 'oneOf' for pinctrl node

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Message-ID: <73284390fda1971eb6727102eba75324a1886a2a.camel@codeconstruct.com.au>
Date: Thu, 02 May 2024 10:46:23 +0930
From: Andrew Jeffery <andrew@...econstruct.com.au>
To: Rob Herring <robh@...nel.org>
Cc: Lee Jones <lee@...nel.org>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
 Joel Stanley <joel@....id.au>, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org,  linux-aspeed@...ts.ozlabs.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: mfd: aspeed: Drop 'oneOf' for pinctrl node

On Wed, 2024-05-01 at 07:39 -0500, Rob Herring wrote:
> On Tue, Apr 30, 2024 at 7:40 PM Andrew Jeffery
> <andrew@...econstruct.com.au> wrote:
> > 
> > On Tue, 2024-04-30 at 12:25 -0500, Rob Herring (Arm) wrote:
> > > The use of 'oneOf' to include 1 of 3 possible child node schemas results
> > > in error messages containing the actual error message(s) for the correct
> > > SoC buried in the tons of error messages from the 2 schemas that don't
> > > apply. It also causes the pinctrl schema to be applied twice as it will
> > > be applied when the compatible matches.
> > > 
> > > All that's really needed in the parent schema is to ensure one of the
> > > possible compatible strings is present in the pinctrl node so that its
> > > schema will be applied separately.
> > 
> > Thanks, I think it improves the readability of intent in the binding as
> > well.
> > 
> > To understand the impact better I grabbed the patch and diffed the
> > output of `make CHECK_DTBS=y aspeed/aspeed-ast2600-evb.dtb` before and
> > after applying it, but there was no significant difference in output.
> > Should that not demonstrate the errors being cleaned up? If not, what
> > should?
> 
> Try it on one of the new boards posted in the last 1-2 days. It showed
> up on my testing dtbs_check on patches. I didn't send a report because
> there was so much noise in it.

I tried with aspeed/aspeed-bmc-ibm-blueridge.dtb and yeah, it does
clean up a lot of barf. Nice. Thanks.

Reviewed-by: Andrew Jeffery <andrew@...econstruct.com.au>

[1]: https://lore.kernel.org/lkml/20240429210131.373487-14-eajames@linux.ibm.com/