[PATCH v4 1/6] dt-bindings: media: platform: visconti: Add Toshiba Visconti Video Input Interface bindings

[Yuji Ishikawa]

Adds the Device Tree binding documentation that allows to describe
the Video Input Interface found in Toshiba Visconti SoCs.

Signed-off-by: Yuji Ishikawa <yuji2.ishikawa@xxxxxxxxxxxxx>
Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@xxxxxxxxxxxxx>
---
Changelog v2:
- no change

Changelog v3:
- no change

Changelog v4:
- fix style problems at the v3 patch
- remove "index" member
- update example
---
 .../bindings/media/toshiba,visconti-viif.yaml | 98 +++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml

diff --git a/Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml b/Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml
new file mode 100644
index 00000000000..71442724d1a
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/toshiba,visconti-viif.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Toshiba Visconti5 SoC Video Input Interface Device Tree Bindings
+
+maintainers:
+  - Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@xxxxxxxxxxxxx>
+
+description:
+  Toshiba Visconti5 SoC Video Input Interface (VIIF)
+  receives MIPI CSI2 video stream,
+  processes the stream with embedded image signal processor (L1ISP, L2ISP),
+  then stores pictures to main memory.
+
+properties:
+  compatible:
+    const: toshiba,visconti-viif
+
+  reg:
+    items:
+      - description: registers for capture control
+      - description: registers for CSI2 receiver control
+
+  interrupts:
+    items:
+      - description: Sync Interrupt
+      - description: Status (Error) Interrupt
+      - description: CSI2 Receiver Interrupt
+      - description: L1ISP Interrupt
+
+  port:
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    unevaluatedProperties: false
+    description: Input port, single endpoint describing the CSI-2 transmitter.
+
+    properties:
+      endpoint:
+        $ref: video-interfaces.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          data-lanes:
+            description: VIIF supports 2 or 4 data lines
+            $ref: /schemas/types.yaml#/definitions/uint32-array
+            minItems: 1
+            maxItems: 4
+            items:
+              minimum: 1
+              maximum: 4
+
+          clock-lanes:
+            description: VIIF supports 1 clock line
+            const: 0
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        viif@1c000000 {
+            compatible = "toshiba,visconti-viif";
+            reg = <0 0x1c000000 0 0x6000>,
+                  <0 0x1c008000 0 0x400>;
+            interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
+
+            port {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                csi_in0: endpoint {
+                    remote-endpoint = <&imx219_out0>;
+                    bus-type = <4>;
+                    data-lanes = <1 2>;
+                    clock-lanes = <0>;
+                    clock-noncontinuous;
+                    link-frequencies = /bits/ 64 <456000000>;
+                };
+            };
+        };
+    };
-- 
2.25.1