[v9,6/8] media: dt-bindings: Add bindings for Raspberry Pi PiSP Back End

Commit Message

Jacopo Mondi May 31, 2024, 8:07 a.m. UTC

Add bindings for the Raspberry Pi PiSP Back End memory-to-memory image
signal processor.

Datasheet:
https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf

Signed-off-by: Jacopo Mondi <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Reviewed-by: Naushir Patuck <[e-mail]>
---
 .../bindings/media/raspberrypi,pispbe.yaml    | 63 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 64 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml

--
2.45.1

Patch

diff --git a/Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml b/Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml
new file mode 100644
index 000000000000..1fc62a1d8eda
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml
@@ -0,0 +1,63 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/raspberrypi,pispbe.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Raspberry Pi PiSP Image Signal Processor (ISP) Back End
+
+maintainers:
+  - Raspberry Pi Kernel Maintenance <[e-mail]>
+  - Jacopo Mondi <[e-mail]>
+
+description: |
+  The Raspberry Pi PiSP Image Signal Processor (ISP) Back End is an image
+  processor that fetches images in Bayer or Grayscale format from DRAM memory
+  in tiles and produces images consumable by applications.
+
+  The full ISP documentation is available at
+  https://datasheets.raspberrypi.com/camera/raspberry-pi-image-signal-processor-specification.pdf
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - brcm,bcm2712-pispbe
+      - const: raspberrypi,pispbe
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  iommus:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        isp@880000  {
+             compatible = "brcm,bcm2712-pispbe", "raspberrypi,pispbe";
+             reg = <0x10 0x00880000 0x0 0x4000>;
+             interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+             clocks = <&firmware_clocks 7>;
+             iommus = <&iommu2>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 97f2bb162730..7291e8ef0585 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18777,6 +18777,7 @@  M:	Jacopo Mondi <[e-mail]>
 L:	Raspberry Pi Kernel Maintenance <[e-mail]>
 L:	[e-mail]
 S:	Maintained
+F:	Documentation/devicetree/bindings/media/raspberrypi,pispbe.yaml
 F:	include/uapi/linux/media/raspberrypi/

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