diff --git a/docs/cpu-specific-build-macros.rst b/docs/cpu-specific-build-macros.rst
index 8c951de..ae0cfd9 100644
--- a/docs/cpu-specific-build-macros.rst
+++ b/docs/cpu-specific-build-macros.rst
@@ -79,6 +79,11 @@
 -  ``ERRATA_A15_827671``: This applies errata 827671 workaround to Cortex-A15
    CPU. This needs to be enabled only for revision >= r3p0 of the CPU.
 
+For Cortex-A17, the following errata build flags are defined :
+
+-  ``ERRATA_A17_852421``: This applies errata 852421 workaround to Cortex-A17
+   CPU. This needs to be enabled only for revision <= r1p2 of the CPU.
+
 For Cortex-A53, the following errata build flags are defined :
 
 -  ``ERRATA_A53_819472``: This applies errata 819472 workaround to all