[PATCH 1/2] dt-bindings: mailbox: imx-mu: add i.MX8ULP S400 MU support

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From: Peng Fan <peng.fan@xxxxxxx>

Similar to i.MX8QM/QXP SCU, i.MX8ULP SCU MU is dedicated for
communication between S400 and Cortex-A cores from hardware design,
it could not be reused for other purpose. To use S400 MU more
effectivly, add "fsl,imx8ulp-mu-s4" compatile to support fast IPC.

Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
 Documentation/devicetree/bindings/mailbox/fsl,mu.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
index 675ad9de15bb..a337bcd80c4a 100644
--- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
+++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
@@ -28,6 +28,7 @@ properties:
       - const: fsl,imx7ulp-mu
       - const: fsl,imx8ulp-mu
       - const: fsl,imx8-mu-scu
+      - const: fsl,imx8ulp-mu-s4
       - items:
           - enum:
               - fsl,imx7s-mu
-- 
2.30.0




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