Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932286AbdCJExp (ORCPT ); Thu, 9 Mar 2017 23:53:45 -0500 Received: from mail-pf0-f193.google.com ([209.85.192.193]:32878 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932079AbdCJExl (ORCPT ); Thu, 9 Mar 2017 23:53:41 -0500 From: Steve Longerbeam X-Google-Original-From: Steve Longerbeam To: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, kernel@pengutronix.de, fabio.estevam@nxp.com, linux@armlinux.org.uk, mchehab@kernel.org, hverkuil@xs4all.nl, nick@shmanahar.org, markus.heiser@darmarIT.de, p.zabel@pengutronix.de, laurent.pinchart+renesas@ideasonboard.com, bparrot@ti.com, geert@linux-m68k.org, arnd@arndb.de, sudipm.mukherjee@gmail.com, minghsiu.tsai@mediatek.com, tiffany.lin@mediatek.com, jean-christophe.trotin@st.com, horms+renesas@verge.net.au, niklas.soderlund+renesas@ragnatech.se, robert.jarzmik@free.fr, songjun.wu@microchip.com, andrew-ct.chen@mediatek.com, gregkh@linuxfoundation.org, shuah@kernel.org, sakari.ailus@linux.intel.com, pavel@ucw.cz Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, devel@driverdev.osuosl.org, Sascha Hauer , Steve Longerbeam Subject: [PATCH v5 01/39] [media] dt-bindings: Add bindings for video-multiplexer device Date: Thu, 9 Mar 2017 20:52:41 -0800 Message-Id: <1489121599-23206-2-git-send-email-steve_longerbeam@mentor.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1489121599-23206-1-git-send-email-steve_longerbeam@mentor.com> References: <1489121599-23206-1-git-send-email-steve_longerbeam@mentor.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2344 Lines: 79 From: Philipp Zabel Add bindings documentation for the video multiplexer device. Signed-off-by: Sascha Hauer Signed-off-by: Philipp Zabel Signed-off-by: Steve Longerbeam --- .../bindings/media/video-multiplexer.txt | 59 ++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/video-multiplexer.txt diff --git a/Documentation/devicetree/bindings/media/video-multiplexer.txt b/Documentation/devicetree/bindings/media/video-multiplexer.txt new file mode 100644 index 0000000..9d133d9 --- /dev/null +++ b/Documentation/devicetree/bindings/media/video-multiplexer.txt @@ -0,0 +1,59 @@ +Video Multiplexer +================= + +Video multiplexers allow to select between multiple input ports. Video received +on the active input port is passed through to the output port. Muxes described +by this binding may be controlled by a syscon register bitfield or by a GPIO. + +Required properties: +- compatible : should be "video-multiplexer" +- reg: should be register base of the register containing the control bitfield +- bit-mask: bitmask of the control bitfield in the control register +- bit-shift: bit offset of the control bitfield in the control register +- gpios: alternatively to reg, bit-mask, and bit-shift, a single GPIO phandle + may be given to switch between two inputs +- #address-cells: should be <1> +- #size-cells: should be <0> +- port@*: at least three port nodes containing endpoints connecting to the + source and sink devices according to of_graph bindings. The last port is + the output port, all others are inputs. + +Example: + +syscon { + compatible = "syscon", "simple-mfd"; + + mux { + compatible = "video-multiplexer"; + /* Single bit (1 << 19) in syscon register 0x04: */ + reg = <0x04>; + bit-mask = <1>; + bit-shift = <19>; + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + mux_in0: endpoint { + remote-endpoint = <&video_source0_out>; + }; + }; + + port@1 { + reg = <1>; + + mux_in1: endpoint { + remote-endpoint = <&video_source1_out>; + }; + }; + + port@2 { + reg = <2>; + + mux_out: endpoint { + remote-endpoint = <&capture_interface_in>; + }; + }; + }; +}; -- 2.7.4