linux-kernel - [PATCH v3 2/3] dt-bindings: staging: Add the binding documentation for ZHOUYI AI accelerator

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Date:   Fri, 26 Nov 2021 10:19:00 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Rob Herring <robh+dt@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-staging@...ts.linux.dev>
Subject: [PATCH v3 2/3] dt-bindings: staging: Add the binding documentation for ZHOUYI AI accelerator

ZHOUYI NPU is an AI accelerator chip which is integrated into ARM SOC,
such as Allwinner R329 SOC.
Add the binding documentation for ZHOUYI AI accelerator.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
v2->v3:
        *Fix unit_address_format, avoid leading 0s.

 .../bindings/staging/arm,zynpu.yaml           | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/staging/arm,zynpu.yaml

diff --git a/Documentation/devicetree/bindings/staging/arm,zynpu.yaml b/Documentation/devicetree/bindings/staging/arm,zynpu.yaml
new file mode 100644
index 000000000000..d452c08ab4a3
--- /dev/null
+++ b/Documentation/devicetree/bindings/staging/arm,zynpu.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/staging/arm,zynpu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM ZHOUYI AI accelerator bindings
+
+maintainers:
+  - Cai Huoqing <caihuoqing@...du.com>
+
+description:
+  Supports ZHOUYI AI accelerator in ARM SOC.
+
+properties:
+  compatible:
+    const: armchina,zhouyi-v1
+
+  reg:
+    maxItems: 1
+
+  device_type:
+    const: zynpu
+
+  cma-reserved-bytes:
+    default: 0
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 3
+
+required:
+  - compatible
+  - reg
+  - device_type
+  - cma-reserved-bytes
+  - interrupts
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+        zynpu@...0000 {
+            compatible = "armchina,zhouyi-v1";
+            reg = <0x0 0x3050000 0x0 0x1000>;
+            device_type = "zynpu";
+            cma-reserved-bytes = <0x2600000>;
+            interrupts = <GIC_SPI 64 IRQ_TYPE_EDGE_RISING>;
+            clocks = <&clk_zynpu>,
+                     <&clk_pll_zynpu>,
+                     <&clk_zynpu_slv>;
+        };
+    };
+...
-- 
2.25.1