Minor clarifications.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/docs/driver-only-builds.md b/docs/driver-only-builds.md
index a7ec8b0..2f022fd 100644
--- a/docs/driver-only-builds.md
+++ b/docs/driver-only-builds.md
@@ -152,6 +152,11 @@
`mbedtls/build_info.h` where xxx can take the same values as for
`MBEDTLS_ECP_DP_xxx` macros.
+Note that for externally-provided drivers, the integrator is responsible for
+ensuring the appropriate `MBEDTLS_PSA_ACCEL_xxx` macros are defined. However,
+for the p256-m driver that's provided with the library, those macros are
+automatically defined when enabling `MBEDTLS_PSA_P256M_DRIVER_ENABLED`.
+
### Limitations regarding fully removing `ecp.c`
A limited subset of `ecp.c` will still be automatically re-enabled if any of