linux-kernel - [PATCH v2 3/5] media: dt-bindings: media: Add binding for the Raspberry Pi HEVC decoder

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Message-Id: <20250206-media-rpi-hevc-dec-v2-3-69353c8805b2@raspberrypi.com>
Date: Thu, 06 Feb 2025 18:02:36 +0000
From: Dave Stevenson <dave.stevenson@...pberrypi.com>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Florian Fainelli <florian.fainelli@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 John Cox <john.cox@...pberrypi.com>, Dom Cobley <dom@...pberrypi.com>, 
 review list <kernel-list@...pberrypi.com>, 
 Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
Cc: John Cox <jc@...esim.co.uk>, linux-media@...r.kernel.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-rpi-kernel@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 Dave Stevenson <dave.stevenson@...pberrypi.com>
Subject: [PATCH v2 3/5] media: dt-bindings: media: Add binding for the
 Raspberry Pi HEVC decoder

Adds a binding for the HEVC decoder found on the BCM2711 / Raspberry Pi 4,
and BCM2712 / Raspberry Pi 5.

Signed-off-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
---
 .../bindings/media/raspberrypi,hevc-dec.yaml       | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/raspberrypi,hevc-dec.yaml b/Documentation/devicetree/bindings/media/raspberrypi,hevc-dec.yaml
new file mode 100644
index 000000000000..06db7004c765
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/raspberrypi,hevc-dec.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/raspberrypi,hevc-dec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Raspberry Pi HEVC Decoder
+
+maintainers:
+  - John Cox <john.cox@...pberrypi.com>
+  - Dom Cobley <dom@...pberrypi.com>
+  - Dave Stevenson <dave.stevenson@...pberrypi.com>
+  - Raspberry Pi internal review list <kernel-list@...pberrypi.com>
+
+description:
+  The Raspberry Pi HEVC decoder is a hardware video decode accelerator block
+  found in the BCM2711 and BCM2712 processors used on Raspberry Pi 4 and 5
+  boards respectively.
+
+properties:
+  compatible:
+    enum:
+      - raspberrypi,hevc-dec
+
+  reg:
+    items:
+      - description: The HEVC main register region
+      - description: The Interrupt control register region
+
+  reg-names:
+    items:
+      - const: hevc
+      - const: intc
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: The HEVC block clock
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    video-codec@...10000 {
+        compatible = "raspberrypi,hevc-dec";
+        reg = <0x7eb00000 0x10000>, /* HEVC */
+              <0x7eb10000 0x1000>;  /* INTC */
+        reg-names = "hevc",
+                    "intc";
+
+        interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
+
+        clocks = <&clk 0>;
+    };
+
+...

-- 
2.34.1