[PATCH v8 05/17] dt-bindings: media: Add bindings for ARM mali-c55

[Daniel Scally]

Add the yaml binding for ARM's Mali-C55 Image Signal Processor.

Acked-by: Nayden Kanchev <nayden.kanchev at arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi at ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi at ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally at ideasonboard.com>
---
Changes in v8:

	- Added the video clock back in. Now that we have actual hardware it's
	  clear that it's necessary.
	- Added reset lines 
	- Dropped R-bs

Changes in v7:

	- None

Changes in v6:

	- None

Changes in v5:

	- None

Changes in v4:

	- Switched to port instead of ports

Changes in v3:

	- Dropped the video clock as suggested by Laurent. I didn't retain it
	for the purposes of the refcount since this driver will call .s_stream()
	for the sensor driver which will refcount the clock anyway.
	- Clarified that the port is a parallel input port rather (Sakari)

Changes in v2:

	- Added clocks information
	- Fixed the warnings raised by Rob

 .../bindings/media/arm,mali-c55.yaml          | 82 +++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/arm,mali-c55.yaml

diff --git a/Documentation/devicetree/bindings/media/arm,mali-c55.yaml b/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
new file mode 100644
index 000000000000..efc88fd2c447
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/arm,mali-c55.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Mali-C55 Image Signal Processor
+
+maintainers:
+  - Daniel Scally <dan.scally at ideasonboard.com>
+  - Jacopo Mondi <jacopo.mondi at ideasonboard.com>
+
+properties:
+  compatible:
+    const: arm,mali-c55
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: ISP Video Clock
+      - description: ISP AXI clock
+      - description: ISP AHB-lite clock
+
+  clock-names:
+    items:
+      - const: vclk
+      - const: aclk
+      - const: hclk
+
+  resets:
+    items:
+      - description: vclk domain reset
+      - description: aclk domain reset
+      - description: hclk domain reset
+
+  reset-names:
+    items:
+      - const: vresetn
+      - const: aresetn
+      - const: hresetn
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description: Input parallel video bus
+
+    properties:
+      endpoint:
+        $ref: /schemas/graph.yaml#/properties/endpoint
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    mali_c55: isp at 400000 {
+      compatible = "arm,mali-c55";
+      reg = <0x400000 0x200000>;
+      clocks = <&clk 0>, <&clk 1>, <&clk 2>;
+      clock-names = "vclk", "aclk", "hclk";
+      resets = <&resets 0>, <&resets 1>, <&resets 2>;
+      reset-names = "vresetn", "aresetn", "hresetn";
+      interrupts = <0>;
+
+      port {
+        isp_in: endpoint {
+            remote-endpoint = <&csi2_rx_out>;
+        };
+      };
+    };
+...
-- 
2.34.1