fix(ethos-n): add workaround for erratum 2838783
To workaround Arm(R) Ethos(TM)-N NPU erratum 2838783, the NPU has been
configured to allow being woken up by both secure and non-secure events
to make sure that an event always wakes up the NPU.
The API version has been given a minor version bump with this change to
indicate that this fix is included.
Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>
Change-Id: I429cdd6bf1e633b4dedf2e94af28937dd892a0ba
diff --git a/drivers/arm/ethosn/ethosn_smc.c b/drivers/arm/ethosn/ethosn_smc.c
index 7604b8b..cf34910 100644
--- a/drivers/arm/ethosn/ethosn_smc.c
+++ b/drivers/arm/ethosn/ethosn_smc.c
@@ -39,7 +39,8 @@
#define SEC_DEL_EXCC_MASK U(0x20)
#define SEC_SECCTLR_REG U(0x0010)
-#define SEC_SECCTLR_VAL U(0x3)
+/* Set bit[10] = 1 to workaround erratum 2838783 */
+#define SEC_SECCTLR_VAL U(0x403)
#define SEC_DEL_ADDR_EXT_REG U(0x201C)
#define SEC_DEL_ADDR_EXT_VAL U(0x15)
diff --git a/include/drivers/arm/ethosn.h b/include/drivers/arm/ethosn.h
index 95244c7..9f1b499 100644
--- a/include/drivers/arm/ethosn.h
+++ b/include/drivers/arm/ethosn.h
@@ -40,7 +40,7 @@
/* Service version */
#define ETHOSN_VERSION_MAJOR U(2)
-#define ETHOSN_VERSION_MINOR U(2)
+#define ETHOSN_VERSION_MINOR U(3)
/* Return codes for function calls */
#define ETHOSN_SUCCESS 0