summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml')
-rw-r--r--Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml51
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml b/Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml
new file mode 100644
index 000000000..72c1d9e82
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mailbox/mtk,adsp-mbox.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek ADSP mailbox
+
+maintainers:
+ - Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
+
+description: |
+ The MTK ADSP mailbox Inter-Processor Communication (IPC) enables the SoC
+ to communicate with ADSP by passing messages through two mailbox channels.
+ The MTK ADSP mailbox IPC also provides the ability for one processor to
+ signal the other processor using interrupts.
+
+properties:
+ compatible:
+ enum:
+ - mediatek,mt8195-adsp-mbox
+ - mediatek,mt8186-adsp-mbox
+
+ "#mbox-cells":
+ const: 0
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - "#mbox-cells"
+ - reg
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ adsp_mailbox0:mailbox@10816000 {
+ compatible = "mediatek,mt8195-adsp-mbox";
+ #mbox-cells = <0>;
+ reg = <0x10816000 0x1000>;
+ interrupts = <GIC_SPI 702 IRQ_TYPE_LEVEL_HIGH 0>;
+ };