diff --git a/docs/plat/imx8.rst b/docs/plat/imx8.rst
index a56d0f1..4240962 100644
--- a/docs/plat/imx8.rst
+++ b/docs/plat/imx8.rst
@@ -9,6 +9,9 @@
 imaging, machine vision, audio, voice, video, and safety-critical
 applications.
 
+The i.MX8QM is with 2 Cortex-A72 ARM core, 4 Cortex-A53 ARM core
+and 1 Cortex-M4 system controller.
+
 The i.MX8QX is with 4 Cortex-A35 ARM core and 1 Cortex-M4 system
 controller.
 
@@ -39,6 +42,7 @@
 
        CROSS_COMPILE=aarch64-linux-gnu- make PLAT=<Target_SoC> bl31
 
+   Target_SoC should be "imx8qm" for i.MX8QM SoC.
    Target_SoC should be "imx8qx" for i.MX8QX SoC.
 
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