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Subject[PATCH 3/4] dt-bindings: add vendor-prefix and documentation for Zhouyi NPU
Date
To enable this NPU IP in Arm-Linux system, SoC vendors should
write devicetree files as documented.

Signed-off-by: Dejia Shang <dejia.shang@armchina.com>
---
.../bindings/misc/armchina,zhouyi-npu.yaml | 57 +++++++++++++++++++
.../devicetree/bindings/vendor-prefixes.yaml | 2 +
2 files changed, 59 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/armchina,zhouyi-npu.yaml

diff --git a/Documentation/devicetree/bindings/misc/armchina,zhouyi-npu.yaml b/Documentation/devicetree/bindings/misc/armchina,zhouyi-npu.yaml
new file mode 100644
index 000000000000..d3fdea101114
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/armchina,zhouyi-npu.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/misc/armchina,zhouyi-npu.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: ArmChina Zhouyi NPU bindings
+
+maintainers:
+ - Dejia Shang <dejia.shang@armchina.com>
+
+description: |
+ Armchina AI accelerator IP - Zhouyi NPU
+
+properties:
+ compatible:
+ items:
+ - const: armchina,zhouyi-v1
+ - const: armchina,zhouyi-v2
+ - const: armchina,zhouyi
+
+ reg:
+ maxItems: 1
+
+ memory-region:
+ maxItems: 2
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ aipu_ddr_reserved: aipu-shmem@0xA0000000 {
+ compatible = "shared-dma-pool";
+ no-map;
+ reg = <0x0 0xA0000000 0x0 0x4000000>;
+ };
+ };
+
+ aipu0@0x64000000 {
+ compatible = "armchina,zhouyi";
+ reg = <0x0 0x64000000 0x0 0x1000>;
+ memory-region=<&aipu_ddr_reserved>;
+ interrupts = <0 168 1>;
+ };
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 66d6432fd781..4b1865d92455 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -123,6 +123,8 @@ patternProperties:
description: ARM Ltd.
"^armadeus,.*":
description: ARMadeus Systems SARL
+ "^armchina,.*":
+ description: Arm Technology (China) Co., Ltd.
"^arrow,.*":
description: Arrow Electronics
"^artesyn,.*":
--
2.17.1
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