linux-kernel - Re: [PATCH v2 24/28] pinctrl: Add support for the Lantic PEF2256 pinmux

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Date:   Mon, 7 Aug 2023 16:36:26 +0200
From:   Herve Codina <herve.codina@...tlin.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, Lee Jones <lee@...nel.org>,
        Qiang Zhao <qiang.zhao@....com>, Li Yang <leoyang.li@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Shengjiu Wang <shengjiu.wang@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Randy Dunlap <rdunlap@...radead.org>, netdev@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, alsa-devel@...a-project.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v2 24/28] pinctrl: Add support for the Lantic PEF2256
 pinmux

Hi Linus, Andrew,

On Mon, 7 Aug 2023 15:17:11 +0200
Andrew Lunn <andrew@...n.ch> wrote:

> On Mon, Aug 07, 2023 at 03:06:42PM +0200, Linus Walleij wrote:
> > On Mon, Aug 7, 2023 at 3:05 PM Linus Walleij <linus.walleij@...aro.org> wrote:
> >   
> > > > Signed-off-by: Herve Codina <herve.codina@...tlin.com>  
> > >
> > > So it is a bridge chip? Please use that terminology since Linux
> > > DRM often talks about bridges.  
> > 
> > Replying to self: no it's not a bridge, it's a WAN thingy.
> > 
> > So perhaps write that this is a WAN interface adapter chip.  
> 
> Hi Linus
> 
> In the E1/T1/J1 world, framer is a well understood concept. Maybe the
> text needs a bit more background information to explain what this is
> to somebody who does not have an old school telecoms background.
> 
>    Andrew

Maybe I can add in my commit log:
--- 8< ---
This kind of component can be found in old telecommunication system.
It was used to digital transmission of many simultaneous telephone calls
by time-division multiplexing. Also using HDLC protocol, WAN networks
can be reached through the framer.
--- 8< ---

Do you think it will be better ?

Regards,
Hervé Codina

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com