diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/soc.h b/drivers/net/wireless/intel/iwlwifi/fw/api/soc.h
index 5d1fb98fe667..aadca78e9846 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/soc.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/soc.h
@@ -8,6 +8,7 @@
  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
+ * Copyright(c) 2019        Intel Deutschland GmbH
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
@@ -30,6 +31,7 @@
  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
+ * Copyright(c) 2019        Intel Deutschland GmbH
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -63,21 +65,23 @@
 #ifndef __iwl_fw_api_soc_h__
 #define __iwl_fw_api_soc_h__
 
-/* type of devices for defining SOC latency */
-enum iwl_soc_device_types {
-	SOC_CONFIG_CMD_INTEGRATED   = 0x0,
-	SOC_CONFIG_CMD_DISCRETE     = 0x1,
-};
+#define SOC_CONFIG_CMD_FLAGS_DISCRETE		BIT(0)
+#define SOC_CONFIG_CMD_FLAGS_LOW_LATENCY	BIT(1)
 
 /**
  * struct iwl_soc_configuration_cmd - Set device stabilization latency
  *
- * @device_type: the device type as defined in &enum iwl_soc_device_types
- * @soc_latency: time for SOC to ensure stable power & XTAL
+ * @flags: soc settings flags.  In VER_1, we can only set the DISCRETE
+ *	flag, because the FW treats the whole value as an integer. In
+ *	VER_2, we can set the bits independently.
+ * @latency: time for SOC to ensure stable power & XTAL
  */
 struct iwl_soc_configuration_cmd {
-	__le32 device_type;
-	__le32 soc_latency;
-} __packed; /* SOC_CONFIGURATION_CMD_S_VER_1 */
+	__le32 flags;
+	__le32 latency;
+} __packed; /*
+	     * SOC_CONFIGURATION_CMD_S_VER_1 (see description above)
+	     * SOC_CONFIGURATION_CMD_S_VER_2
+	     */
 
 #endif /* __iwl_fw_api_soc_h__ */
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-config.h b/drivers/net/wireless/intel/iwlwifi/iwl-config.h
index 8549e8a39705..3069a322ca75 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-config.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-config.h
@@ -303,6 +303,7 @@ struct iwl_pwr_tx_backoff {
  * @gen2: 22000 and on transport operation
  * @mq_rx_supported: multi-queue rx support
  * @integrated: discrete or integrated
+ * @low_latency_xtal: use the low latency xtal if supported
  */
 struct iwl_cfg_trans_params {
 	const struct iwl_base_params *base_params;
@@ -315,6 +316,7 @@ struct iwl_cfg_trans_params {
 	    gen2:1,
 	    mq_rx_supported:1,
 	    integrated:1,
+	    low_latency_xtal:1,
 	    bisr_workaround:1;
 };
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
index 98978a475d93..bc040e9ca55f 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -90,13 +90,24 @@ struct iwl_mvm_alive_data {
 /* set device type and latency */
 static int iwl_set_soc_latency(struct iwl_mvm *mvm)
 {
-	struct iwl_soc_configuration_cmd cmd;
+	struct iwl_soc_configuration_cmd cmd = {};
 	int ret;
 
-	cmd.device_type = (mvm->trans->trans_cfg->integrated) ?
-		cpu_to_le32(SOC_CONFIG_CMD_INTEGRATED) :
-		cpu_to_le32(SOC_CONFIG_CMD_DISCRETE);
-	cmd.soc_latency = cpu_to_le32(mvm->trans->trans_cfg->xtal_latency);
+	/*
+	 * In VER_1 of this command, the discrete value is considered
+	 * an integer; In VER_2, it's a bitmask.  Since we have only 2
+	 * values in VER_1, this is backwards-compatible with VER_2,
+	 * as long as we don't set any other bits.
+	 */
+	if (!mvm->trans->trans_cfg->integrated)
+		cmd.flags = cpu_to_le32(SOC_CONFIG_CMD_FLAGS_DISCRETE);
+
+	if (iwl_mvm_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
+				   SCAN_REQ_UMAC) >= 2 &&
+	    (mvm->trans->trans_cfg->low_latency_xtal))
+		cmd.flags |= cpu_to_le32(SOC_CONFIG_CMD_FLAGS_LOW_LATENCY);
+
+	cmd.latency = cpu_to_le32(mvm->trans->trans_cfg->xtal_latency);
 
 	ret = iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(SOC_CONFIGURATION_CMD,
 						   SYSTEM_GROUP, 0), 0,