There is a version 1.0 MU on imx7ulp, use "fsl,imx7ulp-mu" compatible
to support it.

Signed-off-by: Richard Zhu <hongxing....@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.d...@nxp.com>
---
 Documentation/devicetree/bindings/mailbox/fsl,mu.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt 
b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt
index f3cf77e..9c43357 100644
--- a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt
+++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt
@@ -21,6 +21,8 @@ Required properties:
                imx6sx, imx7s, imx8qxp, imx8qm.
                The "fsl,imx6sx-mu" compatible is seen as generic and should
                be included together with SoC specific compatible.
+               There is a version 1.0 MU on imx7ulp, use "fsl,imx7ulp-mu"
+               compatible to support it.
 - reg :                Should contain the registers location and length
 - interrupts : Interrupt number. The interrupt specifier format depends
                on the interrupt controller parent.
-- 
2.7.4

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