linux-kernel - [PATCH v9 1/3] media: dt-bindings: media: add bindings for Rockchip CIF

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Message-ID: <5f83d60031320c4c7b0f0727604903f50ee49058.1698666612.git.mehdi.djait@bootlin.com>
Date:   Mon, 30 Oct 2023 13:25:12 +0100
From:   Mehdi Djait <mehdi.djait@...tlin.com>
To:     mchehab@...nel.org, heiko@...ech.de, hverkuil-cisco@...all.nl,
        krzysztof.kozlowski+dt@...aro.org, robh+dt@...nel.org,
        conor+dt@...nel.org
Cc:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com,
        alexandre.belloni@...tlin.com, maxime.chevallier@...tlin.com,
        paul.kocialkowski@...tlin.com, michael.riesch@...fvision.net,
        Mehdi Djait <mehdi.djait@...tlin.com>
Subject: [PATCH v9 1/3] media: dt-bindings: media: add bindings for Rockchip CIF

Add a documentation for the Rockchip Camera Interface
binding.

Signed-off-by: Mehdi Djait <mehdi.djait@...tlin.com>
---
v8=>v9:
dropped the "Reviewed-by: Rob Herring <robh@...nel.org>"
because of the following changes:
- changed the compatible to rk3066-cif: rk3066 is the earliest Rockchip SoC
  that uses cif and it is the first model starting the RK30 lineup.
- adjusted the description
- changed the node name to video-capture


 .../bindings/media/rockchip,rk3066-cif.yaml   | 96 +++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/rockchip,rk3066-cif.yaml

diff --git a/Documentation/devicetree/bindings/media/rockchip,rk3066-cif.yaml b/Documentation/devicetree/bindings/media/rockchip,rk3066-cif.yaml
new file mode 100644
index 000000000000..be69e474ed26
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/rockchip,rk3066-cif.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/rockchip,rk3066-cif.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip CIF Camera Interface
+
+maintainers:
+  - Mehdi Djait <mehdi.djait@...tlin.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:
+    enum:
+      - rockchip,rk3066-cif
+      - 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
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description: A connection to a sensor or decoder
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/px30-cru.h>
+    #include <dt-bindings/power/px30-power.h>
+
+    parent {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        video-capture@...90000 {
+            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>;
+
+            port {
+                endpoint {
+                    remote-endpoint = <&tw9900_out>;
+                };
+            };
+        };
+    };
+...
-- 
2.41.0