linux-kernel - [PATCH v3 2/4] dt-bindings: media: allegro: Add al300 decoder IPs

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Message-Id: <20250616-allegro_dvt_al300_dec_driver-v3-2-7d746cb9e5f9@allegrodvt.com>
Date: Mon, 16 Jun 2025 13:12:13 +0000
From: Yassine Ouaissa via B4 Relay <devnull+yassine.ouaissa.allegrodvt.com@...nel.org>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Michael Tretter <m.tretter@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Michal Simek <michal.simek@....com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Yassine OUAISSA <yassine.ouaissa@...egrodvt.com>, 
 Nicolas Dufresne <nicolas@...fresne.ca>
Cc: linux-kernel@...r.kernel.org, linux-media@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org
Subject: [PATCH v3 2/4] dt-bindings: media: allegro: Add al300 decoder IPs

From: Yassine Ouaissa <yassine.ouaissa@...egrodvt.com>

Add a schema for the allegro gen3 video decoder.

Signed-off-by: Yassine Ouaissa <yassine.ouaissa@...egrodvt.com>
---
 .../bindings/media/allegro,al300-vdec.yaml         | 76 ++++++++++++++++++++++
 MAINTAINERS                                        |  2 +
 2 files changed, 78 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/allegro,al300-vdec.yaml b/Documentation/devicetree/bindings/media/allegro,al300-vdec.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..12e86c306d5578d298ad03a6d59593dd1ddcff9e
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/allegro,al300-vdec.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/allegro,al300-vdec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allegro DVT Video IP Decoder Gen 3
+
+maintainers:
+  - Yassine OUAISSA <yassine.ouaissa@...egrodvt.com>
+
+description:
+  The al300-vdec represents the gen 3 of Allegro DVT IP video
+  decoding technology, offering significant advancements over its
+  predecessors. This new decoder features enhanced processing capabilities
+  with improved throughput and reduced latency.
+
+  Communication between the host driver software and the MCU is implemented
+  through a specialized mailbox interface mechanism. This mailbox system
+  provides a structured channel for exchanging commands, parameters, and
+  status information between the host CPU and the MCU controlling the codec
+  engines.
+
+properties:
+  compatible:
+    const: allegro,al300-vdec
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: top
+      - const: apb
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    description: MCU core clock
+    maxItems: 1
+
+  memory-region:
+    maxItems: 1
+
+  firmware-name:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - clocks
+
+additionalProperties: False
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    axi {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        video-decoder@...20000 {
+            compatible = "allegro,al300-vdec";
+            reg = <0x00 0xa0120000 0x00 0x10000>, /*VDEC_TOP*/
+                  <0x01 0x80000000 0x00 0x8000>;  /*MCU_APB*/
+            reg-names = "top", "apb";
+            interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+            clocks = <&mcu_core_clk>;
+            memory-region = <&vdec_mem>;
+            firmware-name = "al300_vdec.fw";
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 714016079537ce3318dd7c7cd05b6aaf35256e26..b1205e3065d2a854c039431637d446d4a15921c6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -816,7 +816,9 @@ M:	Michael Tretter <m.tretter@...gutronix.de>
 R:	Pengutronix Kernel Team <kernel@...gutronix.de>
 L:	linux-media@...r.kernel.org
 S:	Maintained
+F:	Documentation/devicetree/bindings/media/allegro,al300-vdec.yaml
 F:	Documentation/devicetree/bindings/media/allegro,al5e.yaml
+F:	drivers/media/platform/allegro-dvt/al300
 F:	drivers/media/platform/allegro-dvt/zynqmp
 
 ALLIED VISION ALVIUM CAMERA DRIVER

-- 
2.30.2