diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h
index 9116512169dc..2c603a24967f 100644
--- a/include/linux/firmware/intel/stratix10-smc.h
+++ b/include/linux/firmware/intel/stratix10-smc.h
@@ -606,7 +606,7 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
 
 /**
  * Request INTEL_SIP_SMC_FUNCID_FCS_SEND_CERTIFICATE
- * Sync call to send a signed certificate
+ * Async call to send a signed certificate
  *
  * Call register usage:
  * a0 INTEL_SIP_SMC_FCS_SEND_CERTIFICATE
@@ -615,7 +615,7 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
  * a3-a7 not used
  *
  * Return status:
- * a0 INTEL_SIP_SMC_STATUS_OK or INTEL_SIP_SMC_FCS_REJECTED
+ * a0 INTEL_SIP_SMC_STATUS_OK or INTEL_SIP_SMC_REJECTED
  * a1-a3 not used
  */
 #define INTEL_SIP_SMC_FUNCID_FCS_SEND_CERTIFICATE 93
@@ -631,9 +631,11 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
  * a1-a7 not used
  *
  * Return status:
- * a0 INTEL_SIP_SMC_STATUS_OK, INTEL_SIP_SMC_FCS_ERROR or
- *      INTEL_SIP_SMC_FCS_REJECTED
- * a1-a3 not used
+ * a0 INTEL_SIP_SMC_STATUS_OK, INTEL_SIP_SMC_STATUS_ERROR or
+ *	INTEL_SIP_SMC_STATUS_REJECTED
+ * a1 mailbox error if a0 is INTEL_SIP_SMC_STATUS_ERROR
+ * a2 physical address for the structure of fuse and key hashes
+ * a3 the size of structure
  *
  */
 #define INTEL_SIP_SMC_FUNCID_FCS_GET_PROVISION_DATA 94