linux-kernel - Re: [PATCH 3/5] DONOTMERGE: dt-bindings: mfd: syscon: add TI's opp table compatible

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Message-ID: <20240615144304.ty7cpigqddpux55w@bryanbrattlof.com>
Date: Sat, 15 Jun 2024 09:43:04 -0500
From: Bryan Brattlof <bb@...com>
To: Krzysztof Kozlowski <krzk@...nel.org>
CC: Conor Dooley <conor.dooley@...rochip.com>, Lee Jones <lee@...nel.org>,
        Conor Dooley <conor@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, Nishanth Menon <nm@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tero
 Kristo <kristo@...nel.org>, Vibhore Vardhan <vibhore@...com>,
        <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 3/5] DONOTMERGE: dt-bindings: mfd: syscon: add TI's opp
 table compatible

On June 13, 2024 thus sayeth Krzysztof Kozlowski:
> On 13/06/2024 14:20, Conor Dooley wrote:
> > On Thu, Jun 13, 2024 at 01:09:23PM +0100, Lee Jones wrote:
> >> On Wed, 12 Jun 2024, Bryan Brattlof wrote:
> >>
> >>> On June 12, 2024 thus sayeth Conor Dooley:
> >>>> On Wed, Jun 12, 2024 at 11:41:52AM -0500, Bryan Brattlof wrote:
> >>>>> The JTAG_USER_ID_USERCODE efuse address, which is located inside the
> >>>>> WKUP_CTRL_MMR0 range holds information to identify the speed grades of
> >>>>> various components on TI's K3 SoCs. Add a compatible to allow the
> >>>>> cpufreq driver to obtain the data to limit the maximum frequency for the
> >>>>> CPUs under Linux control.
> >>>>>
> >>>>> Signed-off-by: Bryan Brattlof <bb@...com>
> >>>>
> >>>> $subject: DONOTMERGE: dt-bindings: mfd: syscon: add TI's opp table compatible
> >>>>
> >>>> Okay, if this isn't for merging then I won't Ack it.
> >>>
> >>> Ha! Nice. If I don't hear anything from anyone else I'll send a v2 in a 
> >>> few hours.
> >>
> >> What's the point of all the DONOTMERGE nonsense?
> > 
> > AFAICT, TI live in fear of subsystem maintainers merging the dts patches,
> > so they do this.
> 
> And want some strict timeframe of merging bindings (via subsystem) and
> DTS (via SoC tree), which causes all weird submissions like this above
> or sending bindings without users.
> 
> So far I can live with it but if more such peculiarities come up, then
> sorry, fix your process/tools instead of putting burden on maintainers
> and community.
> 

Yeah my worry was all the DTB additions filter in would require a lot of 
coordination between the maintainers of all the different trees.

Having a few DONOTMERGE patches gave the driver maintainer a full look 
at the outcome of the series without having to worry about DTB conflicts 
when another tree picked something up, however I guess if everyone 
participates in -next it shouldn't be that big of a problem. 

~Bryan