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

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Message-ID: <bbf2c52f-e067-431f-a031-b173bf2f19e9@kernel.org>
Date: Sat, 29 Nov 2025 16:54:14 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Richard Weinberger <richard@....at>
Cc: 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>,
 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>
Subject: Re: [PATCH 4/4] arm: dts: omap: Mark various register maps as
 dangerous

On 29/11/2025 16:35, Richard Weinberger 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.

Heh, let me give you a piece of a spoiler of my OSS Japan talk in a
week: TI (entire TI, not individual sub-platforms) for arm32 is 0%
compliant, meaning EVERY board has issues, and TI has THE HIGHEST total
number of warnings of all active mainline arm32 platforms.

TI ARM32 status is absolutely terrible... TI ARM64 is on quite different
side. :)

More of hall-of-shame on 9th of December...

Best regards,
Krzysztof