diff --git a/drivers/i2s/i2s_cavs.c b/drivers/i2s/i2s_cavs.c
index 50fcebb1d62..e8f1c0a9b07 100644
--- a/drivers/i2s/i2s_cavs.c
+++ b/drivers/i2s/i2s_cavs.c
@@ -227,7 +227,7 @@ static void i2s_dma_rx_callback(const struct device *dma_dev, void *arg,
 }
 
 static int i2s_cavs_configure(const struct device *dev, enum i2s_dir dir,
-			      struct i2s_config *i2s_cfg)
+			      const struct i2s_config *i2s_cfg)
 {
 	const struct i2s_cavs_config *const dev_cfg = DEV_CFG(dev);
 	struct i2s_cavs_dev_data *const dev_data = DEV_DATA(dev);
diff --git a/drivers/i2s/i2s_common.c b/drivers/i2s/i2s_common.c
index 2319a59194d..180c0f26c8e 100644
--- a/drivers/i2s/i2s_common.c
+++ b/drivers/i2s/i2s_common.c
@@ -16,8 +16,9 @@ int z_impl_i2s_buf_read(const struct device *dev, void *buf, size_t *size)
 	ret = i2s_read((const struct device *)dev, &mem_block, size);
 
 	if (!ret) {
-		struct i2s_config *rx_cfg =
-			i2s_config_get((const struct device *)dev, I2S_DIR_RX);
+		const struct i2s_config *rx_cfg;
+
+		rx_cfg = i2s_config_get((const struct device *)dev, I2S_DIR_RX);
 
 		memcpy(buf, mem_block, *size);
 		k_mem_slab_free(rx_cfg->mem_slab, &mem_block);
@@ -29,7 +30,7 @@ int z_impl_i2s_buf_read(const struct device *dev, void *buf, size_t *size)
 int z_impl_i2s_buf_write(const struct device *dev, void *buf, size_t size)
 {
 	int ret;
-	struct i2s_config *tx_cfg;
+	const struct i2s_config *tx_cfg;
 	void *mem_block;
 
 	tx_cfg = i2s_config_get((const struct device *)dev, I2S_DIR_TX);
diff --git a/drivers/i2s/i2s_handlers.c b/drivers/i2s/i2s_handlers.c
index 27384887f25..0bd3d4dc311 100644
--- a/drivers/i2s/i2s_handlers.c
+++ b/drivers/i2s/i2s_handlers.c
@@ -11,7 +11,7 @@
 
 static inline int z_vrfy_i2s_configure(const struct device *dev,
 				       enum i2s_dir dir,
-				       struct i2s_config *cfg_ptr)
+				       const struct i2s_config *cfg_ptr)
 {
 	struct i2s_config config;
 	int ret = -EINVAL;
@@ -20,7 +20,7 @@ static inline int z_vrfy_i2s_configure(const struct device *dev,
 		goto out;
 	}
 
-	Z_OOPS(z_user_from_copy(&config, (void *)cfg_ptr,
+	Z_OOPS(z_user_from_copy(&config, (const void *)cfg_ptr,
 				sizeof(struct i2s_config)));
 
 	/* Check that the k_mem_slab provided is a valid pointer and that
@@ -55,14 +55,13 @@ static inline int z_vrfy_i2s_buf_read(const struct device *dev,
 	ret = i2s_read((const struct device *)dev, &mem_block, &data_size);
 
 	if (!ret) {
-		struct i2s_config *rx_cfg;
+		const struct i2s_config *rx_cfg;
 		int copy_success;
 
 		/* Presumed to be configured otherwise the i2s_read() call
 		 * would have failed.
 		 */
-		rx_cfg = i2s_config_get((const struct device *)dev,
-					I2S_DIR_RX);
+		rx_cfg = i2s_config_get((const struct device *)dev, I2S_DIR_RX);
 
 		copy_success = z_user_to_copy((void *)buf, mem_block,
 					      data_size);
@@ -81,7 +80,7 @@ static inline int z_vrfy_i2s_buf_write(const struct device *dev,
 				       void *buf, size_t size)
 {
 	int ret;
-	struct i2s_config *tx_cfg;
+	const struct i2s_config *tx_cfg;
 	void *mem_block;
 
 	Z_OOPS(Z_SYSCALL_DRIVER_I2S(dev, write));
diff --git a/drivers/i2s/i2s_litex.c b/drivers/i2s/i2s_litex.c
index ec159c7a817..d63e4ff94e7 100644
--- a/drivers/i2s/i2s_litex.c
+++ b/drivers/i2s/i2s_litex.c
@@ -334,7 +334,7 @@ static int i2s_litex_initialize(const struct device *dev)
 }
 
 static int i2s_litex_configure(const struct device *dev, enum i2s_dir dir,
-			       struct i2s_config *i2s_cfg)
+			       const struct i2s_config *i2s_cfg)
 {
 	struct i2s_litex_data *const dev_data = DEV_DATA(dev);
 	const struct i2s_litex_cfg *const cfg = DEV_CFG(dev);
@@ -393,7 +393,9 @@ static int i2s_litex_configure(const struct device *dev, enum i2s_dir dir,
 			"only %"
 			"i bytes of data are valid ",
 			req_buf_s);
-		i2s_cfg->block_size = req_buf_s;
+		/* The block_size field will be corrected to req_buf_s in the
+		 * structure copied as stream configuration (see below).
+		 */
 	}
 
 	int dev_sample_width = i2s_get_sample_width(cfg->base);
@@ -434,6 +436,8 @@ static int i2s_litex_configure(const struct device *dev, enum i2s_dir dir,
 #endif
 
 	memcpy(&stream->cfg, i2s_cfg, sizeof(struct i2s_config));
+	stream->cfg.block_size = req_buf_s;
+
 	stream->state = I2S_STATE_READY;
 	return 0;
 }
diff --git a/drivers/i2s/i2s_ll_stm32.c b/drivers/i2s/i2s_ll_stm32.c
index ebc5df4d221..02d0cd51ae0 100644
--- a/drivers/i2s/i2s_ll_stm32.c
+++ b/drivers/i2s/i2s_ll_stm32.c
@@ -181,7 +181,7 @@ static int i2s_stm32_set_clock(const struct device *dev,
 }
 
 static int i2s_stm32_configure(const struct device *dev, enum i2s_dir dir,
-			       struct i2s_config *i2s_cfg)
+			       const struct i2s_config *i2s_cfg)
 {
 	const struct i2s_stm32_cfg *const cfg = DEV_CFG(dev);
 	struct i2s_stm32_data *const dev_data = DEV_DATA(dev);
diff --git a/drivers/i2s/i2s_mcux_flexcomm.c b/drivers/i2s/i2s_mcux_flexcomm.c
index c67d28303c8..c153839a142 100644
--- a/drivers/i2s/i2s_mcux_flexcomm.c
+++ b/drivers/i2s/i2s_mcux_flexcomm.c
@@ -48,7 +48,7 @@ struct i2s_mcux_data {
 
 static int i2s_mcux_flexcomm_cfg_convert(uint32_t base_frequency,
 					 enum i2s_dir dir,
-					 struct i2s_config *i2s_cfg,
+					 const struct i2s_config *i2s_cfg,
 					 i2s_config_t *fsl_cfg)
 {
 	if (dir == I2S_DIR_RX) {
@@ -149,8 +149,8 @@ static int i2s_mcux_flexcomm_cfg_convert(uint32_t base_frequency,
 	return 0;
 }
 
-static struct i2s_config *i2s_mcux_config_get(const struct device *dev,
-				enum i2s_dir dir)
+static const struct i2s_config *i2s_mcux_config_get(const struct device *dev,
+						    enum i2s_dir dir)
 {
 	struct i2s_mcux_data *dev_data = dev->data;
 	struct stream *stream;
@@ -169,7 +169,7 @@ static struct i2s_config *i2s_mcux_config_get(const struct device *dev,
 }
 
 static int i2s_mcux_configure(const struct device *dev, enum i2s_dir dir,
-			       struct i2s_config *i2s_cfg)
+			      const struct i2s_config *i2s_cfg)
 {
 	const struct i2s_mcux_config *cfg = dev->config;
 	struct i2s_mcux_data *dev_data = dev->data;
diff --git a/drivers/i2s/i2s_sam_ssc.c b/drivers/i2s/i2s_sam_ssc.c
index be7201fee1a..f5666af3687 100644
--- a/drivers/i2s/i2s_sam_ssc.c
+++ b/drivers/i2s/i2s_sam_ssc.c
@@ -311,7 +311,7 @@ tx_disable:
 }
 
 static int set_rx_data_format(const struct i2s_sam_dev_cfg *const dev_cfg,
-			      struct i2s_config *i2s_cfg)
+			      const struct i2s_config *i2s_cfg)
 {
 	Ssc *const ssc = dev_cfg->regs;
 	const bool pin_rk_en = IS_ENABLED(CONFIG_I2S_SAM_SSC_0_PIN_RK_EN);
@@ -404,7 +404,7 @@ static int set_rx_data_format(const struct i2s_sam_dev_cfg *const dev_cfg,
 }
 
 static int set_tx_data_format(const struct i2s_sam_dev_cfg *const dev_cfg,
-			      struct i2s_config *i2s_cfg)
+			      const struct i2s_config *i2s_cfg)
 {
 	Ssc *const ssc = dev_cfg->regs;
 	uint8_t word_size_bits = i2s_cfg->word_size;
@@ -515,8 +515,8 @@ static int bit_clock_set(Ssc *const ssc, uint32_t bit_clk_freq)
 	return 0;
 }
 
-static struct i2s_config *i2s_sam_config_get(const struct device *dev,
-					     enum i2s_dir dir)
+static const struct i2s_config *i2s_sam_config_get(const struct device *dev,
+						   enum i2s_dir dir)
 {
 	struct i2s_sam_dev_data *const dev_data = DEV_DATA(dev);
 	struct stream *stream;
@@ -535,7 +535,7 @@ static struct i2s_config *i2s_sam_config_get(const struct device *dev,
 }
 
 static int i2s_sam_configure(const struct device *dev, enum i2s_dir dir,
-			     struct i2s_config *i2s_cfg)
+			     const struct i2s_config *i2s_cfg)
 {
 	const struct i2s_sam_dev_cfg *const dev_cfg = DEV_CFG(dev);
 	struct i2s_sam_dev_data *const dev_data = DEV_DATA(dev);
diff --git a/include/drivers/i2s.h b/include/drivers/i2s.h
index b96be3efb5f..5b11c852771 100644
--- a/include/drivers/i2s.h
+++ b/include/drivers/i2s.h
@@ -316,9 +316,9 @@ struct i2s_config {
  */
 __subsystem struct i2s_driver_api {
 	int (*configure)(const struct device *dev, enum i2s_dir dir,
-			 struct i2s_config *cfg);
-	struct i2s_config *(*config_get)(const struct device *dev,
-					 enum i2s_dir dir);
+			 const struct i2s_config *cfg);
+	const struct i2s_config *(*config_get)(const struct device *dev,
+				  enum i2s_dir dir);
 	int (*read)(const struct device *dev, void **mem_block, size_t *size);
 	int (*write)(const struct device *dev, void *mem_block, size_t size);
 	int (*trigger)(const struct device *dev, enum i2s_dir dir,
@@ -351,11 +351,11 @@ __subsystem struct i2s_driver_api {
  * @retval -ENOSYS I2S_DIR_BOTH value is not supported.
  */
 __syscall int i2s_configure(const struct device *dev, enum i2s_dir dir,
-			    struct i2s_config *cfg);
+			    const struct i2s_config *cfg);
 
 static inline int z_impl_i2s_configure(const struct device *dev,
 				       enum i2s_dir dir,
-				       struct i2s_config *cfg)
+				       const struct i2s_config *cfg)
 {
 	const struct i2s_driver_api *api =
 		(const struct i2s_driver_api *)dev->api;
@@ -371,8 +371,8 @@ static inline int z_impl_i2s_configure(const struct device *dev,
  * @retval Pointer to the structure containing configuration parameters,
  *         or NULL if un-configured
  */
-static inline struct i2s_config *i2s_config_get(const struct device *dev,
-						enum i2s_dir dir)
+static inline const struct i2s_config *i2s_config_get(const struct device *dev,
+						      enum i2s_dir dir)
 {
 	const struct i2s_driver_api *api =
 		(const struct i2s_driver_api *)dev->api;