diff --git a/tests/scripts/components-configuration-crypto.sh b/tests/scripts/components-configuration-crypto.sh
index 07b6fa5..0ccb2ce 100644
--- a/tests/scripts/components-configuration-crypto.sh
+++ b/tests/scripts/components-configuration-crypto.sh
@@ -2671,6 +2671,15 @@
 }
 
 component_test_psa_crypto_drivers () {
+    # Test dispatch to drivers and fallbacks with
+    # test_suite_psa_crypto_driver_wrappers test suite. The test drivers that
+    # are wrappers around the builtin drivers are activated by
+    # PSA_CRYPTO_DRIVER_TEST.
+    #
+    # For the time being, some test cases in test_suite_block_cipher and
+    # test_suite_md.psa rely on this component to be run at least once by the
+    # CI. This should disappear as we progress the 4.x work. See
+    # config_adjust_test_accelerators.h for more information.
     msg "build: full + test drivers dispatching to builtins"
     scripts/config.py full
     loc_cflags="$ASAN_CFLAGS -DPSA_CRYPTO_DRIVER_TEST -DMBEDTLS_CONFIG_ADJUST_TEST_ACCELERATORS"
diff --git a/tf-psa-crypto/drivers/builtin/include/mbedtls/config_adjust_test_accelerators.h b/tf-psa-crypto/drivers/builtin/include/mbedtls/config_adjust_test_accelerators.h
index 28718a0..bf3eb83 100644
--- a/tf-psa-crypto/drivers/builtin/include/mbedtls/config_adjust_test_accelerators.h
+++ b/tf-psa-crypto/drivers/builtin/include/mbedtls/config_adjust_test_accelerators.h
@@ -46,21 +46,7 @@
     "automatically at the right point."
 #endif
 
-/* PSA_CRYPTO_DRIVER_TEST_ALL activates test drivers while keeping the
- * built-in implementations active. Normally setting MBEDTLS_PSA_ACCEL_xxx
- * would disable MBEDTLS_PSA_BUILTIN_xxx unless fallback is activated, but
- * here we arrange to have both active so that psa_crypto_*.c includes
- * the built-in implementations and the driver code can call the built-in
- * implementations.
- *
- * The point of this test mode is to verify that the
- * driver entry points are called when they should be in a lightweight
- * way, without requiring an actual driver. This is different from builds
- * with libtestdriver1, where we make a copy of the library source code
- * and use that as an external driver.
- */
-
-/* Use the accelerator driver for all cryptographic mechanisms for which
+/* Declare the accelerator driver for all cryptographic mechanisms for which
  * the test driver is implemented. This is copied from psa/crypto_config.h
  * with the parts not implemented by the test driver commented out. */
 #define MBEDTLS_PSA_ACCEL_KEY_TYPE_DERIVE