[PATCH v13 03/15] dt-bindings: media: Add bindings for ARM mali-c55

[Daniel Scally <dan.scally@ideasonboard.com>]

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

Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
---
Changes in v13:

	- Added resets and reset-names to required properties
	- More realistic interrupts property in the binding example
	- Dropped the mali_c55 label from the node in the example

Changes in v12:

	- _Actually_ dropped the arm,inline property mode, having forgotten to
	  do so in v11.

Changes in v11:

	- Dropped in arm,inline_mode property. This is now identical to the
	  reviewed version 8, so I have kept the tags on there.

Changes in v10:

	- None

Changes in v9:

	- Added the arm,inline_mode property to differentiate between inline and
	  memory input configurations

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
---
 .../devicetree/bindings/media/arm,mali-c55.yaml    | 86 ++++++++++++++++++++++
 1 file changed, 86 insertions(+)

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 0000000000000000000000000000000000000000..fc4fcd19922aad510ac40a02a53c3c098af9f6a0
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
@@ -0,0 +1,86 @@
+# 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@ideasonboard.com>
+  - Jacopo Mondi <jacopo.mondi@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
+  - resets
+  - reset-names
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    isp@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 = <GIC_SPI 861 IRQ_TYPE_EDGE_RISING>;
+
+      port {
+        isp_in: endpoint {
+            remote-endpoint = <&csi2_rx_out>;
+        };
+      };
+    };
+...

-- 
2.43.0