diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
index 17b8baf749e6..abc6792e738c 100644
--- a/drivers/spi/spi-mem.c
+++ b/drivers/spi/spi-mem.c
@@ -172,6 +172,9 @@ bool spi_mem_default_supports_op(struct spi_mem *mem,
 		if (!spi_mem_controller_is_capable(ctlr, dtr))
 			return false;
 
+		if (op->data.swap16 && !spi_mem_controller_is_capable(ctlr, swap16))
+			return false;
+
 		if (op->cmd.nbytes != 2)
 			return false;
 	} else {
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index f866d5c8ed32..c46d2b8029be 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -90,6 +90,8 @@ enum spi_mem_data_dir {
  * @data.buswidth: number of IO lanes used to send/receive the data
  * @data.dtr: whether the data should be sent in DTR mode or not
  * @data.ecc: whether error correction is required or not
+ * @data.swap16: whether the byte order of 16-bit words is swapped when read
+ *		 or written in Octal DTR mode compared to STR mode.
  * @data.dir: direction of the transfer
  * @data.nbytes: number of data bytes to send/receive. Can be zero if the
  *		 operation does not involve transferring data
@@ -124,7 +126,8 @@ struct spi_mem_op {
 		u8 buswidth;
 		u8 dtr : 1;
 		u8 ecc : 1;
-		u8 __pad : 6;
+		u8 swap16 : 1;
+		u8 __pad : 5;
 		enum spi_mem_data_dir dir;
 		unsigned int nbytes;
 		union {
@@ -297,10 +300,13 @@ struct spi_controller_mem_ops {
  * struct spi_controller_mem_caps - SPI memory controller capabilities
  * @dtr: Supports DTR operations
  * @ecc: Supports operations with error correction
+ * @swap16: Supports swapping bytes on a 16 bit boundary when configured in
+ *	    Octal DTR
  */
 struct spi_controller_mem_caps {
 	bool dtr;
 	bool ecc;
+	bool swap16;
 };
 
 #define spi_mem_controller_is_capable(ctlr, cap)	\