diff --git a/docs/plat/imx8m.rst b/docs/plat/imx8m.rst
index ab33a8a..a69f022 100644
--- a/docs/plat/imx8m.rst
+++ b/docs/plat/imx8m.rst
@@ -31,6 +31,7 @@
        CROSS_COMPILE=aarch64-linux-gnu- make PLAT=<Target_SoC> bl31
 
    Target_SoC should be "imx8mq" for i.MX8MQ SoC.
+   Target_SoC should be "imx8mm" for i.MX8MM SoC.
 
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