diff --git a/drivers/net/wireless/mwifiex/Kconfig b/drivers/net/wireless/mwifiex/Kconfig
index 8f2797a..2a078ce 100644
--- a/drivers/net/wireless/mwifiex/Kconfig
+++ b/drivers/net/wireless/mwifiex/Kconfig
@@ -10,12 +10,12 @@
 	  mwifiex.
 
 config MWIFIEX_SDIO
-	tristate "Marvell WiFi-Ex Driver for SD8787"
+	tristate "Marvell WiFi-Ex Driver for SD8787/SD8797"
 	depends on MWIFIEX && MMC
 	select FW_LOADER
 	---help---
 	  This adds support for wireless adapters based on Marvell
-	  8787 chipset with SDIO interface.
+	  8787/8797 chipsets with SDIO interface.
 
 	  If you choose to build it as a module, it will be called
 	  mwifiex_sdio.
diff --git a/drivers/net/wireless/mwifiex/cfp.c b/drivers/net/wireless/mwifiex/cfp.c
index f2e6de0..1782a77 100644
--- a/drivers/net/wireless/mwifiex/cfp.c
+++ b/drivers/net/wireless/mwifiex/cfp.c
@@ -75,18 +75,32 @@
  * This function maps an index in supported rates table into
  * the corresponding data rate.
  */
-u32 mwifiex_index_to_data_rate(u8 index, u8 ht_info)
+u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv, u8 index,
+							u8 ht_info)
 {
-	u16 mcs_rate[4][8] = {
-		{0x1b, 0x36, 0x51, 0x6c, 0xa2, 0xd8, 0xf3, 0x10e}
-	,			/* LG 40M */
-	{0x1e, 0x3c, 0x5a, 0x78, 0xb4, 0xf0, 0x10e, 0x12c}
-	,			/* SG 40M */
-	{0x0d, 0x1a, 0x27, 0x34, 0x4e, 0x68, 0x75, 0x82}
-	,			/* LG 20M */
-	{0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90}
-	};			/* SG 20M */
+	/*
+	 * For every mcs_rate line, the first 8 bytes are for stream 1x1,
+	 * and all 16 bytes are for stream 2x2.
+	 */
+	u16  mcs_rate[4][16] = {
+		/* LGI 40M */
+		{ 0x1b, 0x36, 0x51, 0x6c, 0xa2, 0xd8, 0xf3, 0x10e,
+		  0x36, 0x6c, 0xa2, 0xd8, 0x144, 0x1b0, 0x1e6, 0x21c },
 
+		/* SGI 40M */
+		{ 0x1e, 0x3c, 0x5a, 0x78, 0xb4, 0xf0, 0x10e, 0x12c,
+		  0x3c, 0x78, 0xb4, 0xf0, 0x168, 0x1e0, 0x21c, 0x258 },
+
+		/* LGI 20M */
+		{ 0x0d, 0x1a, 0x27, 0x34, 0x4e, 0x68, 0x75, 0x82,
+		  0x1a, 0x34, 0x4e, 0x68, 0x9c, 0xd0, 0xea, 0x104 },
+
+		/* SGI 20M */
+		{ 0x0e, 0x1c, 0x2b, 0x39, 0x56, 0x73, 0x82, 0x90,
+		  0x1c, 0x39, 0x56, 0x73, 0xad, 0xe7, 0x104, 0x120 }
+	};
+	u32 mcs_num_supp =
+		(priv->adapter->hw_dev_mcs_support == HT_STREAM_2X2) ? 16 : 8;
 	u32 rate;
 
 	if (ht_info & BIT(0)) {
@@ -95,7 +109,7 @@
 				rate = 0x0D;	/* MCS 32 SGI rate */
 			else
 				rate = 0x0C;	/* MCS 32 LGI rate */
-		} else if (index < 8) {
+		} else if (index < mcs_num_supp) {
 			if (ht_info & BIT(1)) {
 				if (ht_info & BIT(2))
 					/* SGI, 40M */
diff --git a/drivers/net/wireless/mwifiex/fw.h b/drivers/net/wireless/mwifiex/fw.h
index 35cb29c..62b8639 100644
--- a/drivers/net/wireless/mwifiex/fw.h
+++ b/drivers/net/wireless/mwifiex/fw.h
@@ -165,6 +165,7 @@
 
 #define GET_RXMCSSUPP(DevMCSSupported) (DevMCSSupported & 0x0f)
 #define SETHT_MCS32(x) (x[4] |= 1)
+#define HT_STREAM_2X2	0x22
 
 #define SET_SECONDARYCHAN(RadioType, SECCHAN) (RadioType |= (SECCHAN << 4))
 
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 30f138b..3861a61 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -775,7 +775,8 @@
 struct mwifiex_chan_freq_power *mwifiex_get_cfp_by_band_and_freq_from_cfg80211(
 						struct mwifiex_private *priv,
 						u8 band, u32 freq);
-u32 mwifiex_index_to_data_rate(u8 index, u8 ht_info);
+u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv, u8 index,
+							u8 ht_info);
 u32 mwifiex_find_freq_from_band_chan(u8, u8);
 int mwifiex_cmd_append_vsie_tlv(struct mwifiex_private *priv, u16 vsie_mask,
 				u8 **buffer);
diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c
index ffaf3f3..702452b 100644
--- a/drivers/net/wireless/mwifiex/sdio.c
+++ b/drivers/net/wireless/mwifiex/sdio.c
@@ -256,10 +256,13 @@
 
 /* Device ID for SD8787 */
 #define SDIO_DEVICE_ID_MARVELL_8787   (0x9119)
+/* Device ID for SD8797 */
+#define SDIO_DEVICE_ID_MARVELL_8797   (0x9129)
 
 /* WLAN IDs */
 static const struct sdio_device_id mwifiex_ids[] = {
 	{SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787)},
+	{SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797)},
 	{},
 };
 
@@ -1573,7 +1576,16 @@
 	sdio_set_drvdata(func, card);
 
 	adapter->dev = &func->dev;
-	strcpy(adapter->fw_name, SD8787_DEFAULT_FW_NAME);
+
+	switch (func->device) {
+	case SDIO_DEVICE_ID_MARVELL_8797:
+		strcpy(adapter->fw_name, SD8797_DEFAULT_FW_NAME);
+		break;
+	case SDIO_DEVICE_ID_MARVELL_8787:
+	default:
+		strcpy(adapter->fw_name, SD8787_DEFAULT_FW_NAME);
+		break;
+	}
 
 	return 0;
 
@@ -1774,4 +1786,5 @@
 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
 MODULE_VERSION(SDIO_VERSION);
 MODULE_LICENSE("GPL v2");
-MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
+MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
+MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
diff --git a/drivers/net/wireless/mwifiex/sdio.h b/drivers/net/wireless/mwifiex/sdio.h
index 3f71180..a3fb3222 100644
--- a/drivers/net/wireless/mwifiex/sdio.h
+++ b/drivers/net/wireless/mwifiex/sdio.h
@@ -29,6 +29,7 @@
 #include "main.h"
 
 #define SD8787_DEFAULT_FW_NAME "mrvl/sd8787_uapsta.bin"
+#define SD8797_DEFAULT_FW_NAME "mrvl/sd8797_uapsta.bin"
 
 #define BLOCK_MODE	1
 #define BYTE_MODE	0
diff --git a/drivers/net/wireless/mwifiex/sta_cmdresp.c b/drivers/net/wireless/mwifiex/sta_cmdresp.c
index 7a16b0c..e812db8 100644
--- a/drivers/net/wireless/mwifiex/sta_cmdresp.c
+++ b/drivers/net/wireless/mwifiex/sta_cmdresp.c
@@ -508,7 +508,7 @@
 	priv->tx_htinfo = resp->params.tx_rate.ht_info;
 	if (!priv->is_data_rate_auto)
 		priv->data_rate =
-			mwifiex_index_to_data_rate(priv->tx_rate,
+			mwifiex_index_to_data_rate(priv, priv->tx_rate,
 						   priv->tx_htinfo);
 
 	return 0;
diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
index ea4a29b..4b6f553 100644
--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -832,8 +832,8 @@
 
 	if (!ret) {
 		if (rate->is_rate_auto)
-			rate->rate = mwifiex_index_to_data_rate(priv->tx_rate,
-							priv->tx_htinfo);
+			rate->rate = mwifiex_index_to_data_rate(priv,
+					priv->tx_rate, priv->tx_htinfo);
 		else
 			rate->rate = priv->data_rate;
 	} else {