linux-kernel - Re: [PATCH 4/4] arm: dts: omap: Mark various register maps as dangerous

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Message-ID: <20251129174833.24b9356c@kemnade.info>
Date: Sat, 29 Nov 2025 17:48:33 +0100
From: Andreas Kemnade <andreas@...nade.info>
To: Richard Weinberger <richard@....at>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, linux-kernel
 <linux-kernel@...r.kernel.org>, linux-omap <linux-omap@...r.kernel.org>,
 devicetree <devicetree@...r.kernel.org>, Arnd Bergmann <arnd@...db.de>, Lee
 Jones <lee@...nel.org>, dakr <dakr@...nel.org>, "Rafael J. Wysocki"
 <rafael@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Mark
 Brown <broonie@...nel.org>, tony <tony@...mide.com>, rogerq
 <rogerq@...nel.org>, khilman <khilman@...libre.com>, aaro koskinen
 <aaro.koskinen@....fi>, Conor Dooley <conor+dt@...nel.org>, Krzysztof
 Kozlowski <krzk+dt@...nel.org>, robh <robh@...nel.org>
Subject: Re: [PATCH 4/4] arm: dts: omap: Mark various register maps as
 dangerous

On Sat, 29 Nov 2025 16:35:31 +0100 (CET)
Richard Weinberger <richard@....at> wrote:

> ----- Ursprüngliche Mail -----
> > Von: "Krzysztof Kozlowski" <krzk@...nel.org>
> > An: "richard" <richard@....at>, "linux-kernel" <linux-kernel@...r.kernel.org>
> > CC: "linux-omap" <linux-omap@...r.kernel.org>, "devicetree" <devicetree@...r.kernel.org>, "Arnd Bergmann"
> > <arnd@...db.de>, "Lee Jones" <lee@...nel.org>, "dakr" <dakr@...nel.org>, "Rafael J. Wysocki" <rafael@...nel.org>, "Greg
> > Kroah-Hartman" <gregkh@...uxfoundation.org>, "Mark Brown" <broonie@...nel.org>, "tony" <tony@...mide.com>, "rogerq"
> > <rogerq@...nel.org>, "khilman" <khilman@...libre.com>, "Andreas Kemnade" <andreas@...nade.info>, "aaro koskinen"
> > <aaro.koskinen@....fi>, "Conor Dooley" <conor+dt@...nel.org>, "Krzysztof Kozlowski" <krzk+dt@...nel.org>, "robh"
> > <robh@...nel.org>
> > Gesendet: Samstag, 29. November 2025 16:26:19
> > Betreff: Re: [PATCH 4/4] arm: dts: omap: Mark various register maps as dangerous  
> 
> > On 29/11/2025 15:20, Richard Weinberger wrote:  
> >> index 711ce4c31bb1f..1b1f31608d37e 100644
> >> --- a/arch/arm/boot/dts/ti/omap/dra7.dtsi
> >> +++ b/arch/arm/boot/dts/ti/omap/dra7.dtsi
> >> @@ -359,6 +359,7 @@ bandgap: bandgap@...021e0 {
> >>  		dsp1_system: dsp_system@...00000 {
> >>  			compatible = "syscon";  
> > 
> > Oh, no no, sorry, but buggy/incomplete/legacy DT is not an excuse for
> > new properties. You cannot have such compatible alone in the first place.  
> 
> Okay, I didn't know that the OMAP DT is in that bad shape.
> Is somebody working on a solution?
> 
well, it is an arduous work, piece by piece work. But things are getting better
slowly. I convert bindings from time to time, mostly the ones
needed by omap3-5 parts, not the active am3/5 parts.

compare
https://gitlab.com/robherring/linux-dt/-/jobs/5620809910#L5618

to the newer
https://gitlab.com/robherring/linux-dt/-/jobs/12112550529#L5156

Regards,
Andreas