diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 6029035..2fa3b9a 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -474,6 +474,12 @@
    Cortex-X2 CPU. This needs to be enabled only for revisions r0p0, r1p0 and
    r2p0 of the CPU, it is fixed in r2p1.
 
+For Cortex-A510, the following errata build flags are defined :
+
+-  ``ERRATA_A510_1922240``: This applies errata 1922240 workaround to
+   Cortex-A510 CPU. This needs to be enabled only for revision r0p0, it is
+   fixed in r0p1.
+
 DSU Errata Workarounds
 ----------------------