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Thu, 28 May 2020 12:48:38 -0700 (PDT) Received: from xps15 ([64.188.179.252]) by smtp.gmail.com with ESMTPSA id y13sm2960819iob.51.2020.05.28.12.48.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 May 2020 12:48:16 -0700 (PDT) Received: (nullmailer pid 568649 invoked by uid 1000); Thu, 28 May 2020 19:48:04 -0000 Date: Thu, 28 May 2020 13:48:04 -0600 From: Rob Herring To: Guido =?iso-8859-1?Q?G=FCnther?= Subject: Re: [RFC PATCH 1/6] dt-bindings: display/bridge: Add binding for input mux bridge Message-ID: <20200528194804.GA541078@bogus> References: <14a44a664f40584ffa25c1764aab5ebf97809c71.1589548223.git.agx@sigxcpu.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <14a44a664f40584ffa25c1764aab5ebf97809c71.1589548223.git.agx@sigxcpu.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200528_124838_962982_FF23FAD1 X-CRM114-Status: GOOD ( 15.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Peng Fan , Pengutronix Kernel Team , Sam Ravnborg , Anson Huang , David Airlie , Shawn Guo , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Andrzej Hajda , Laurent Pinchart , Daniel Vetter , Lucas Stach , Robert Chiras , Leonard Crestez , Fabio Estevam , linux-arm-kernel@lists.infradead.org, NXP Linux Team Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, May 15, 2020 at 03:12:10PM +0200, Guido G=FCnther wrote: > The bridge allows to select the input source via a mux controller. > = > Signed-off-by: Guido G=FCnther > --- > .../display/bridge/mux-input-bridge.yaml | 123 ++++++++++++++++++ > 1 file changed, 123 insertions(+) > create mode 100644 Documentation/devicetree/bindings/display/bridge/mux-= input-bridge.yaml > = > diff --git a/Documentation/devicetree/bindings/display/bridge/mux-input-b= ridge.yaml b/Documentation/devicetree/bindings/display/bridge/mux-input-bri= dge.yaml > new file mode 100644 > index 000000000000..4029cf63ee5c > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/bridge/mux-input-bridge.y= aml > @@ -0,0 +1,123 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/display/bridge/mux-input-bridge.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: DRM input source selection via multiplexer DRM is not a hardware thing. The graph binding is already designed to support muxing. Generally, = multiple endpoints on an input node is a mux. So either the device with = the input ports knows how to select the input, or you just need a = mux-control property for the port to have some other device implement = the control. You could do it like you have below. That would be appropriate if = there's a separate h/w device controlling the muxing. Say for example = some board level device controlled by i2c. Rob _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel