linux-kernel - [PATCH v2 1/2] media: dt-bindings: media: xilinx: Add Xilinx UHD-SDI Receiver Subsystem

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Message-Id: <20200429141705.18755-2-vishal.sagar@xilinx.com>
Date:   Wed, 29 Apr 2020 19:47:03 +0530
From:   Vishal Sagar <vishal.sagar@...inx.com>
To:     Hyun Kwon <hyunk@...inx.com>, laurent.pinchart@...asonboard.com,
        mchehab@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
        Michal Simek <michals@...inx.com>, linux-media@...r.kernel.org,
        devicetree@...r.kernel.org, hans.verkuil@...co.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Dinesh Kumar <dineshk@...inx.com>,
        Sandip Kothari <sandipk@...inx.com>,
        Joe Perches <joe@...ches.com>
Cc:     Vishal Sagar <vishal.sagar@...inx.com>
Subject: [PATCH v2 1/2] media: dt-bindings: media: xilinx: Add Xilinx UHD-SDI Receiver Subsystem

Add bindings documentation for Xilinx UHD-SDI Receiver Subsystem.

The Xilinx UHD-SDI Receiver Subsystem consists of SMPTE UHD-SDI (RX) IP
core, an SDI RX to Video Bridge IP core to convert SDI video to native
video and a Video In to AXI4-Stream IP core to convert native video to
AXI4-Stream.

Signed-off-by: Vishal Sagar <vishal.sagar@...inx.com>
---
v2
- Removed references to xlnx,video*
- Fixed as per Sakari Ailus and Rob Herring's comments
- Converted to yaml format

 .../bindings/media/xilinx/xlnx,sdirxss.yaml   | 132 ++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/xilinx/xlnx,sdirxss.yaml

diff --git a/Documentation/devicetree/bindings/media/xilinx/xlnx,sdirxss.yaml b/Documentation/devicetree/bindings/media/xilinx/xlnx,sdirxss.yaml
new file mode 100644
index 000000000000..9133ad19df55
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/xilinx/xlnx,sdirxss.yaml
@@ -0,0 +1,132 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/xilinx/xlnx,sdirxss.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+
+title: Xilinx SMPTE UHD-SDI Receiver Subsystem
+
+maintainers:
+  - Vishal Sagar <vishal.sagar@...inx.com>
+
+description: |
+  The SMPTE UHD-SDI Receiver (RX) Subsystem allows you to quickly create systems
+  based on SMPTE SDI protocols. It receives unaligned native SDI streams from
+  the SDI GT PHY and outputs an AXI4-Stream video stream, native video, or
+  native SDI using Xilinx transceivers as the physical layer.
+
+  The subsystem consists of
+  1 - SMPTE UHD-SDI Rx
+  2 - SDI Rx to Native Video Bridge
+  3 - Video In to AXI4-Stream Bridge
+
+  The subsystem can capture SDI streams in upto 12G mode 8 data streams and output
+  a dual pixel per clock RGB/YUV444,422/420 10/12 bits per component AXI4-Stream.
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - xlnx,v-smpte-uhdsdi-rx-ss-2.0
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    description: List of clock specifiers
+    items:
+      - description: AXI4-Lite clock
+      - description: SMPTE UHD-SDI Rx core clock
+      - description: Video clock
+
+  clock-names:
+    items:
+      - const: s_axi_aclk
+      - const: sdi_rx_clk
+      - const: video_out_clk
+
+  xlnx,bpp:
+    description: Bits per pixel supported. Can be 10 or 12 bits per pixel only.
+    allOf:
+      - $ref: "/schemas/types.yaml#/definitions/uint32"
+      - enum: [10, 12]
+
+  xlnx,line-rate:
+    description: |
+      The maximum mode supported by the design. Possible values are as below
+      12G_SDI_8DS - 12G mode with 8 data streams
+      6G_SDI      -  6G mode
+      3G_SDI      -  3G mode
+    enum:
+      - 12G_SDI_8DS
+      - 6G_SDI
+      - 3G_SDI
+
+  xlnx,include-edh:
+    type: boolean
+    description: |
+      This is present when the Error Detection and Handling processor is
+      enabled in design.
+
+  ports:
+    type: object
+    description: |
+      Generally the SDI port is connected to a device like SDI Broadcast camera
+      which is independently controlled. Hence port@0 is a source port which can be
+      connected to downstream IP which can work with AXI4 Stream data.
+    properties:
+      port@0:
+        type: object
+        description: Source port
+        properties:
+          reg:
+            const: 0
+          endpoint:
+            type: object
+            properties:
+              remote-endpoint: true
+            required:
+              - remote-endpoint
+            additionalProperties: false
+        additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - xlnx,line-rate
+  - xlnx,bpp
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    uhdsdirxss: v-smpte-uhdsdi-rxss@...00000 {
+      compatible = "xlnx,v-smpte-uhdsdi-rx-ss-2.0";
+      interrupt-parent = <&gic>;
+      interrupts = <0 89 4>;
+      reg = <0x0 0x80000000 0x0 0x10000>;
+      xlnx,include-edh;
+      xlnx,line-rate = "12G_SDI_8DS";
+      clocks = <&clk_1>, <&si570_1>, <&clk_2>;
+      clock-names = "s_axi_aclk", "sdi_rx_clk", "video_out_clk";
+      xlnx,bpp = <10>;
+
+      ports {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        port@0 {
+          reg = <0>;
+          sdirx_out: endpoint {
+            remote-endpoint = <&vcap_sdirx_in>;
+          };
+        };
+      };
+    };
-- 
2.21.0