diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
index a88b9f038356..5f973ebfb8b6 100644
--- a/drivers/spi/spi-mem.c
+++ b/drivers/spi/spi-mem.c
@@ -541,6 +541,38 @@ const char *spi_mem_get_name(struct spi_mem *mem)
 }
 EXPORT_SYMBOL_GPL(spi_mem_get_name);
 
+/**
+ * spi_mem_set_dqs() - Mark DQS as being available
+ * @mem: the SPI memory
+ *
+ * When reading at high frequencies (> 100MHz), especially when DTR is enabled,
+ * transfer speed is limited due to clock skews. In particular, the controller
+ * does not know the board propagation delay nor the memory chip internal delay
+ * (clock in to data out) and thus cannot optimize its sampling points.
+ * Mitigating this limitation is possible with the addition of a data strobe
+ * signal, commonly named DQS.
+ *
+ * Set the DQS boolean if the feature is available and configured at the chip
+ * level. Controllers may query this value.
+ */
+void spi_mem_set_dqs(struct spi_mem *mem)
+{
+	mem->dqs = true;
+}
+EXPORT_SYMBOL_GPL(spi_mem_set_dqs);
+
+/**
+ * spi_mem_has_dqs() - Query whether the DQS is available or not
+ * @mem: the SPI memory
+ *
+ * Return: a boolean indicating whether the DQS signal is available or not.
+ */
+bool spi_mem_has_dqs(struct spi_mem *mem)
+{
+	return mem->dqs;
+}
+EXPORT_SYMBOL_GPL(spi_mem_has_dqs);
+
 /**
  * spi_mem_adjust_op_size() - Adjust the data size of a SPI mem operation to
  *			      match controller limitations
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index f660bb2e9f85..0cce6b57242a 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -275,6 +275,7 @@ struct spi_mem_dirmap_desc {
  * @spi: the underlying SPI device
  * @drvpriv: spi_mem_driver private data
  * @name: name of the SPI memory device
+ * @dqs: extra data trobe pin available for high frequency read operations
  *
  * Extra information that describe the SPI memory device and may be needed by
  * the controller to properly handle this device should be placed here.
@@ -286,6 +287,7 @@ struct spi_mem {
 	struct spi_device *spi;
 	void *drvpriv;
 	const char *name;
+	bool dqs;
 };
 
 /**
@@ -461,6 +463,8 @@ bool spi_mem_default_supports_op(struct spi_mem *mem,
 }
 #endif /* CONFIG_SPI_MEM */
 
+void spi_mem_set_dqs(struct spi_mem *mem);
+bool spi_mem_has_dqs(struct spi_mem *mem);
 int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op);
 void spi_mem_adjust_op_freq(struct spi_mem *mem, struct spi_mem_op *op);
 u64 spi_mem_calc_op_duration(struct spi_mem *mem, struct spi_mem_op *op);