linux-kernel - [PATCH v10 1/3] media: dt-bindings: media: add bindings for Rockchip CIF

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Message-ID: <037bcabf97294d37b271537e4b11fb88cf9bb6f6.1699460637.git.mehdi.djait@bootlin.com>
Date:   Wed,  8 Nov 2023 17:38:56 +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 v10 1/3] media: dt-bindings: media: add bindings for Rockchip CIF

Add a documentation for the Rockchip Camera Interface binding.

the name of the file rk3066 is the first Rockchip SoC generation that uses cif
instead of the px30 which is just one of the many iterations of the unit.

Signed-off-by: Mehdi Djait <mehdi.djait@...tlin.com>
---
 .../bindings/media/rockchip,rk3066-cif.yaml   | 94 +++++++++++++++++++
 1 file changed, 94 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..c3a5cd2baf71
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/rockchip,rk3066-cif.yaml
@@ -0,0 +1,94 @@
+# 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:
+    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
+
+  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