[PATCH v1] dt-bindings: dsp: mediatek: add mt8186 dsp document

[Tinghan Shen <tinghan.shen@mediatek.com>]

This patch adds mt8186 dsp document. The dsp is used for Sound Open
Firmware driver node. It includes registers, clocks, memory regions,
and mailbox for dsp.

Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
---

This patch depends on MT8186 clock bindings.
https://lore.kernel.org/all/20220409132251.31725-2-chun-jie.chen@mediatek.com/

---
 .../bindings/dsp/mediatek,mt8186-dsp.yaml     | 93 +++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml

diff --git a/Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml b/Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml
new file mode 100644
index 000000000000..00a79e880895
--- /dev/null
+++ b/Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dsp/mediatek,mt8186-dsp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek mt8186 DSP core
+
+maintainers:
+  - Tinghan Shen <tinghan.shen@mediatek.com>
+
+description: |
+  MediaTek mt8186 SoC contains a DSP core used for
+  advanced pre- and post- audio processing.
+
+properties:
+  compatible:
+    const: mediatek,mt8186-dsp
+
+  reg:
+    items:
+      - description: Address and size of the DSP config registers
+      - description: Address and size of the DSP SRAM
+      - description: Address and size of the DSP secure registers
+      - description: Address and size of the DSP bus registers
+
+  reg-names:
+    items:
+      - const: cfg
+      - const: sram
+      - const: sec
+      - const: bus
+
+  clocks:
+    items:
+      - description: mux for audio dsp clock
+      - description: mux for audio dsp local bus
+
+  clock-names:
+    items:
+      - const: audiodsp_sel
+      - const: adsp_bus_sel
+
+  power-domains:
+    maxItems: 1
+
+  mboxes:
+    items:
+      - description: ipc reply between host and audio DSP.
+      - description: ipc request between host and audio DSP.
+
+  mbox-names:
+    items:
+      - const: mbox0
+      - const: mbox1
+
+  memory-region:
+    items:
+      - description: dma buffer between host and DSP.
+      - description: DSP system memory.
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - power-domains
+  - mbox-names
+  - mboxes
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/mt8186-clk.h>
+    dsp@10680000 {
+        compatible = "mediatek,mt8186-dsp";
+        reg = <0x10680000 0x2000>,
+              <0x10800000 0x100000>,
+              <0x1068b000 0x100>,
+              <0x1068f000 0x1000>;
+        reg-names = "cfg", "sram", "sec", "bus";
+        clocks = <&topckgen CLK_TOP_AUDIODSP>,
+                 <&topckgen CLK_TOP_ADSP_BUS>;
+        clock-names = "audiodsp_sel",
+                      "adsp_bus_sel";
+        power-domains = <&spm 6>;
+        mbox-names = "mbox0", "mbox1";
+        mboxes = <&adsp_mailbox0>, <&adsp_mailbox1>;
+    };
-- 
2.18.0