[PATCH 2/6] dt-bindings: soc: mediatek: mutex: Allow #trigger-source-cells

[AngeloGioacchino Del Regno]

This hardware controls trigger sources, and there's even a generic
binding just for that: allow #trigger-source-cells in MuteX, so
that this is allowed to provide triggers to external HW.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
 .../devicetree/bindings/soc/mediatek/mediatek,mutex.yaml      | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml
index 1ba086ad749d..429ea149068e 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml
+++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml
@@ -57,6 +57,9 @@ properties:
     items:
       - description: MUTEX Clock
 
+  '#trigger-source-cells':
+    const: 1
+
   mediatek,gce-events:
     description:
       The event id which is mapping to the specific hardware event signal
@@ -119,6 +122,7 @@ examples:
             interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_LOW>;
             power-domains = <&spm MT8173_POWER_DOMAIN_MM>;
             clocks = <&mmsys CLK_MM_MUTEX_32K>;
+            #trigger-source-cells = <1>;
             mediatek,gce-events = <CMDQ_EVENT_MUTEX0_STREAM_EOF>,
                                   <CMDQ_EVENT_MUTEX1_STREAM_EOF>;
         };
-- 
2.54.0