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From:   Mehdi Djait <mehdi.djait@bootlin.com>
To:     mchehab@kernel.org, heiko@sntech.de, hverkuil-cisco@xs4all.nl,
        krzysztof.kozlowski+dt@linaro.org, robh+dt@kernel.org,
        conor+dt@kernel.org
Cc:     linux-media@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com,
        alexandre.belloni@bootlin.com, maxime.chevallier@bootlin.com,
        paul.kocialkowski@bootlin.com, michael.riesch@wolfvision.net,
        Mehdi Djait <mehdi.djait@bootlin.com>
Subject: [PATCH v11 1/3] media: dt-bindings: media: add bindings for Rockchip CIF
Date:   Thu, 16 Nov 2023 12:04:38 +0100
Message-ID: <a0af1d30e79fb1f2567297c951781996836d6db6.1700132457.git.mehdi.djait@bootlin.com>
In-Reply-To: <cover.1700132457.git.mehdi.djait@bootlin.com>
References: <cover.1700132457.git.mehdi.djait@bootlin.com>
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Add a documentation for the Rockchip Camera Interface binding.

Signed-off-by: Mehdi Djait <mehdi.djait@bootlin.com>
---
 .../bindings/media/rockchip,px30-vip.yaml     | 173 ++++++++++++++++++
 1 file changed, 173 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml

diff --git a/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml b/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml
new file mode 100644
index 000000000000..580ed654000c
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml
@@ -0,0 +1,173 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/rockchip,px30-vip.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip CIF Camera Interface
+
+maintainers:
+  - Mehdi Djait <mehdi.djait@bootlin.com>
+
+description:
+  CIF is a camera interface present on some rockchip SoCs. It receives the data
+  from Camera sensor or CCIR656 encoder and transfers it into system main memory
+  by AXI bus.
+
+properties:
+  compatible:
+    const: rockchip,px30-vip
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: ACLK
+      - description: HCLK
+      - description: PCLK
+
+  clock-names:
+    items:
+      - const: aclk
+      - const: hclk
+      - const: pclk
+
+  resets:
+    items:
+      - description: AXI
+      - description: AHB
+      - description: PCLK IN
+
+  reset-names:
+    items:
+      - const: axi
+      - const: ahb
+      - const: pclkin
+
+  power-domains:
+    maxItems: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
+        description: input port on the parallel interface
+
+        properties:
+          endpoint:
+            $ref: video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              bus-type:
+                enum: [5, 6]
+
+            required:
+              - bus-type
+
+    required:
+      - port@0
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/px30-cru.h>
+    #include <dt-bindings/display/sdtv-standards.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/media/video-interfaces.h>
+    #include <dt-bindings/power/px30-power.h>
+
+    parent {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        video-capture@ff490000 {
+            compatible = "rockchip,px30-vip";
+            reg = <0x0 0xff490000 0x0 0x200>;
+            interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
+            clocks = <&cru ACLK_CIF>, <&cru HCLK_CIF>, <&cru PCLK_CIF>;
+            clock-names = "aclk", "hclk", "pclk";
+            resets = <&cru SRST_CIF_A>, <&cru SRST_CIF_H>, <&cru SRST_CIF_PCLKIN>;
+            reset-names = "axi", "ahb", "pclkin";
+            power-domains = <&power PX30_PD_VI>;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+
+                    cif_in: endpoint {
+                        remote-endpoint = <&tw9900_out>;
+                        bus-type = <MEDIA_BUS_TYPE_BT656>;
+                    };
+                };
+            };
+        };
+
+        composite_connector {
+            compatible = "composite-video-connector";
+            label = "tv";
+            sdtv-standards = <(SDTV_STD_PAL | SDTV_STD_NTSC)>;
+
+            port {
+                composite_to_tw9900: endpoint {
+                    remote-endpoint = <&tw9900_to_composite>;
+                };
+            };
+        };
+
+        i2c {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            video-decoder@44 {
+                compatible = "techwell,tw9900";
+                reg = <0x44>;
+
+                vdd-supply = <&tw9900_supply>;
+                reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
+
+                ports {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+
+                    port@0 {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        reg = <0>;
+                        tw9900_to_composite: endpoint@0 {
+                            reg = <0>;
+                            remote-endpoint = <&composite_to_tw9900>;
+                        };
+                    };
+
+                    port@1 {
+                        reg = <1>;
+                        tw9900_out: endpoint {
+                            remote-endpoint = <&cif_in>;
+                        };
+                    };
+                };
+            };
+        };
+    };
+...
-- 
2.41.0