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[24.155.109.49]) by smtp.gmail.com with ESMTPSA id n19sm951525oig.57.2020.02.26.08.30.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Feb 2020 08:30:55 -0800 (PST) Received: (nullmailer pid 26591 invoked by uid 1000); Wed, 26 Feb 2020 16:30:54 -0000 Date: Wed, 26 Feb 2020 10:30:54 -0600 From: Rob Herring To: Wolfram Sang Subject: Re: [RFC PATCH 3/7] i2c: allow DT nodes without 'compatible' Message-ID: <20200226163054.GA26533@bogus> References: <20200220172403.26062-1-wsa+renesas@sang-engineering.com> <20200220172403.26062-4-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200220172403.26062-4-wsa+renesas@sang-engineering.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200226_083058_873266_6324ADFB X-CRM114-Status: GOOD ( 12.33 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux I3C List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Kieran Bingham , Wolfram Sang , linux-kernel@vger.kernel.org, Jacopo Mondi , Vladimir Zapolskiy , linux-renesas-soc@vger.kernel.org, Luca Ceresoli , linux-i2c@vger.kernel.org, Niklas =?iso-8859-1?Q?S=F6derlund?= , linux-i3c@lists.infradead.org, Laurent Pinchart Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.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 > --- > 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 _______________________________________________ linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c