linux-kernel - Re: [PATCH] firmware: arm_scmi: Clarify Raw per-channel ABI documentation

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Date:   Fri, 20 Jan 2023 14:34:39 +0000
From:   Cristian Marussi <cristian.marussi@....com>
To:     Bagas Sanjaya <bagasdotme@...il.com>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Linux Documentation <linux-doc@...r.kernel.org>,
        sudeep.holla@....com, Vincent Guittot <vincent.guittot@...aro.org>
Subject: Re: [PATCH] firmware: arm_scmi: Clarify Raw per-channel ABI
 documentation

On Fri, Jan 20, 2023 at 07:43:30PM +0700, Bagas Sanjaya wrote:
> [Also Cc: linux-doc list]
>

Sorry for missing the Cc but get_maintainer.pl did not say anything
about this ABI docs patches.

> On Fri, Jan 20, 2023 at 12:23:26PM +0000, Cristian Marussi wrote:
> > diff --git a/Documentation/ABI/testing/debugfs-scmi-raw b/Documentation/ABI/testing/debugfs-scmi-raw
> > index 5468ec08c084..b1c505ed444c 100644
> > --- a/Documentation/ABI/testing/debugfs-scmi-raw
> > +++ b/Documentation/ABI/testing/debugfs-scmi-raw
> > @@ -80,9 +80,13 @@ Description:	SCMI Raw synchronous message injection/snooping facility; write
> >  		Each write to the entry causes one command request to be built
> >  		and sent while the replies are read back one message at time
> >  		(receiving an EOF at each message boundary).
> > +		Channel identifier <m> matches the SCMI protocol number which
> > +		has been associated with this transport channel in the DT
> > +		description, with Base protocol number 0x10 being the default
> > +		channel for this instance.
> 
> s/Base/base/
> 
Thought that being an SCMI protocol name definitions would have to be
capitalized.

> >  		Note that these per-channel entries rooted at <..>/channels
> >  		exist only if the transport is configured to have more than
> > -		one channel.
> > +		one default channel.
> >  Users:		Debugging, any userspace test suite
> >  
> >  What:		/sys/kernel/debug/scmi/<n>/raw/channels/<m>/message_async
> > @@ -103,7 +107,11 @@ Description:	SCMI Raw asynchronous message injection/snooping facility; write
> >  		Each write to the entry causes one command request to be built
> >  		and sent while the replies are read back one message at time
> >  		(receiving an EOF at each message boundary).
> > +		Channel identifier <m> matches the SCMI protocol number which
> > +		has been associated with this transport channel in the DT
> > +		description, with Base protocol number 0x10 being the default
> > +		channel for this instance.
> 
> Same here.
> 
> >  		Note that these per-channel entries rooted at <..>/channels
> >  		exist only if the transport is configured to have more than
> > -		one channel.
> > +		one default channel.
> >  Users:		Debugging, any userspace test suite
>  
> Otherwise LGTM.
>
Thanks,
Cristian