From c67e6dd3d9c5590394faf5138021ba7ebe306343 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Povi=C5=A1er?= <povik+lin@cutebit.org>
Date: Sat, 19 Feb 2022 09:50:39 +0100
Subject: [PATCH 070/171] dt-bindings: dma: Add apple,admac binding
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The Audio DMA Controller (ADMAC) is used to load and store audio
samples from/to system memory. It is present on Apple SoCs from
the "Apple Silicon" family.

Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
---
 .../devicetree/bindings/dma/apple,admac.yaml  | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/apple,admac.yaml

diff --git a/Documentation/devicetree/bindings/dma/apple,admac.yaml b/Documentation/devicetree/bindings/dma/apple,admac.yaml
new file mode 100644
index 000000000000..34ede3b0de2c
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/apple,admac.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/apple,admac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple Audio DMA Controller (ADMAC)
+
+description: |
+  The Audio DMA Controller (ADMAC) is used to load and store audio
+  samples from/to system memory. It is present on Apple SoCs
+  from the "Apple Silicon" family.
+
+maintainers:
+  - Martin Povišer <povik@protonmail.com>
+
+allOf:
+  - $ref: "dma-controller.yaml#"
+
+properties:
+  compatible:
+    items:
+      - const: apple,t8103-admac
+      - const: apple,admac
+
+  reg:
+    maxItems: 1
+
+  '#dma-cells':
+    const: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - '#dma-cells'
+  - dma-channels
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/apple-aic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    dart_sio: iommu@235004000 {
+      compatible = "apple,t8103-dart", "apple,dart";
+      reg = <0x2 0x35004000 0x0 0x4000>;
+      interrupt-parent = <&aic>;
+      interrupts = <AIC_IRQ 635 IRQ_TYPE_LEVEL_HIGH>;
+      #iommu-cells = <1>;
+    };
+
+    admac: dma-controller@238200000 {
+      compatible = "apple,t8103-admac", "apple,admac";
+      reg = <0x2 0x38200000 0x0 0x34000>;
+      dma-channels = <12>;
+      interrupt-parent = <&aic>;
+      interrupts = <AIC_IRQ 626 IRQ_TYPE_LEVEL_HIGH>;
+      #dma-cells = <1>;
+      iommus = <&dart_sio 2>;
+    };
\ No newline at end of file
-- 
2.34.1