diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 9aaa078..416f9ee 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -881,6 +881,10 @@
 
 For Cortex-A715, the following errata build flags are defined :
 
+-  ``ERRATA_A715_2420947``: This applies errata 2420947 workaround to
+   Cortex-A715 CPU. This needs to be enabled only for revision r1p0.
+   It is fixed in r1p1.
+
 -  ``ERRATA_A715_2429384``: This applies errata 2429384 workaround to
    Cortex-A715 CPU. This needs to be enabled for revision r1p0. There is no
    workaround for revision r0p0. It is fixed in r1p1.
diff --git a/lib/cpus/aarch64/cortex_a715.S b/lib/cpus/aarch64/cortex_a715.S
index 44796b6..a9bb370 100644
--- a/lib/cpus/aarch64/cortex_a715.S
+++ b/lib/cpus/aarch64/cortex_a715.S
@@ -26,6 +26,12 @@
 	wa_cve_2022_23960_bhb_vector_table CORTEX_A715_BHB_LOOP_COUNT, cortex_a715
 #endif /* WORKAROUND_CVE_2022_23960 */
 
+workaround_reset_start cortex_a715, ERRATUM(2420947), ERRATA_A715_2420947
+        sysreg_bit_set CORTEX_A715_CPUACTLR2_EL1, BIT(33)
+workaround_reset_end cortex_a715, ERRATUM(2420947)
+
+check_erratum_range cortex_a715, ERRATUM(2420947), CPU_REV(1, 0), CPU_REV(1, 0)
+
 workaround_reset_start cortex_a715, ERRATUM(2429384), ERRATA_A715_2429384
         sysreg_bit_set CORTEX_A715_CPUACTLR2_EL1, BIT(27)
 workaround_reset_end cortex_a715, ERRATUM(2429384)
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 5e68dda..5bdd9e4 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -911,6 +911,10 @@
 # This erratum applies to revisions r0p0, r0p1. Fixed in r0p2.
 CPU_FLAG_LIST += ERRATA_V2_2801372
 
+# Flag to apply erratum 2420947 workaround during reset. This erratum applies
+# only to revision r1p0. It is fixed in r1p1.
+CPU_FLAG_LIST += ERRATA_A715_2420947
+
 # Flag to apply erratum 2429384 workaround during reset. This erratum applies
 # to revision r1p0. There is no workaround for r0p0. It is fixed in r1p1.
 CPU_FLAG_LIST += ERRATA_A715_2429384