From: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-i3c-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
"Kieran Bingham" <kieran-7hKh/agyDeatmTQ+vhA3Yw@public.gmane.org>,
"Niklas Söderlund"
<niklas.soderlund-1zkq55x86MTxsAP9Fp7wbw@public.gmane.org>,
"Luca Ceresoli" <luca-ep08DiM7hqZH3+C6az13tg@public.gmane.org>,
"Jacopo Mondi" <jacopo-AW8dsiIh9cEdnm+yROfE0A@public.gmane.org>,
"Laurent Pinchart"
<laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>,
"Vladimir Zapolskiy" <vz-ChpfBGZJDbMAvxtiuMwx3w@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"Wolfram Sang"
<wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org>
Subject: Re: [RFC PATCH 3/7] i2c: allow DT nodes without 'compatible'
Date: Wed, 26 Feb 2020 10:30:54 -0600 [thread overview]
Message-ID: <20200226163054.GA26533@bogus> (raw)
In-Reply-To: <20200220172403.26062-4-wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org>
On Thu, 20 Feb 2020 18:23:59 +0100, Wolfram Sang wrote:
> Sometimes, we have unknown devices in a system and still want to block
> their address. For that, we allow DT nodes with only a 'reg' property.
> These devices will be bound to the "dummy" driver but with the name
> "reserved". That way, we can distinguish them and even hand them over to
> the "dummy" driver later when they are really requested using
> i2c_new_ancillary_device().
>
> Signed-off-by: Wolfram Sang <wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org>
> ---
> Documentation/devicetree/bindings/i2c/i2c-ocores.txt | 1 -
> Documentation/devicetree/bindings/i2c/i2c.txt | 4 +++-
> drivers/i2c/i2c-core-base.c | 1 +
> drivers/i2c/i2c-core-of.c | 8 +++-----
> drivers/i2c/i2c-core.h | 1 +
> 5 files changed, 8 insertions(+), 7 deletions(-)
>
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
next prev parent reply other threads:[~2020-02-26 16:30 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-20 17:23 [RFC PATCH 0/7] i2c: of: reserve unknown and ancillary addresses Wolfram Sang
2020-02-20 17:23 ` [RFC PATCH 1/7] i2c: add sanity check for parameter of i2c_verify_client() Wolfram Sang
2020-02-21 9:36 ` Geert Uytterhoeven
2020-02-20 17:23 ` [RFC PATCH 2/7] i2c: use DEFINE for the dummy driver name Wolfram Sang
2020-02-21 9:38 ` Geert Uytterhoeven
[not found] ` <20200220172403.26062-1-wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org>
2020-02-20 17:23 ` [RFC PATCH 3/7] i2c: allow DT nodes without 'compatible' Wolfram Sang
[not found] ` <20200220172403.26062-4-wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org>
2020-02-21 9:45 ` Geert Uytterhoeven
[not found] ` <CAMuHMdWaPfc050dZiRr+gAFzsdjSo9Vo70ztWgrMGPJxLUqupw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2020-02-21 9:48 ` Geert Uytterhoeven
2020-02-23 23:11 ` Luca Ceresoli
2020-03-12 11:19 ` Wolfram Sang
2020-03-12 11:44 ` Alexandre Belloni
2020-04-10 13:47 ` Luca Ceresoli
2020-02-26 16:30 ` Rob Herring [this message]
2020-02-20 17:24 ` [RFC PATCH 4/7] i2c: of: remove superfluous parameter from exported function Wolfram Sang
[not found] ` <20200220172403.26062-5-wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org>
2020-02-21 9:50 ` Geert Uytterhoeven
2020-02-24 8:12 ` Luca Ceresoli
2020-02-20 17:24 ` [RFC PATCH 5/7] i2c: of: error message unification Wolfram Sang
2020-02-21 9:54 ` Geert Uytterhoeven
2020-02-20 17:24 ` [RFC PATCH 6/7] i2c: of: mark a whole array of regs as reserved Wolfram Sang
2020-02-21 10:09 ` Geert Uytterhoeven
2020-03-12 11:21 ` Wolfram Sang
2020-03-18 14:33 ` Wolfram Sang
2020-02-28 12:11 ` Luca Ceresoli
2020-02-20 17:24 ` [RFC PATCH 7/7] i2c: core: hand over reserved devices when requesting ancillary addresses Wolfram Sang
[not found] ` <20200220172403.26062-8-wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org>
2020-02-21 10:13 ` Geert Uytterhoeven
2020-02-28 12:11 ` Luca Ceresoli
2020-03-12 11:30 ` Wolfram Sang
2020-03-12 11:21 ` Wolfram Sang
2020-03-13 12:42 ` Wolfram Sang
2020-02-21 10:15 ` [RFC PATCH 0/7] i2c: of: reserve unknown and " Geert Uytterhoeven
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