diff --git a/sound/soc/tegra-alt/include/tegra_asoc_machine_alt.h b/sound/soc/tegra-alt/include/tegra_asoc_machine_alt.h
index 8fd4a681..f32384d2 100644
--- a/sound/soc/tegra-alt/include/tegra_asoc_machine_alt.h
+++ b/sound/soc/tegra-alt/include/tegra_asoc_machine_alt.h
@@ -493,8 +493,6 @@ int tegra_machine_add_codec_jack_control(struct snd_soc_card *card,
 					 struct snd_soc_pcm_runtime *rtd,
 					 struct snd_soc_jack *jack);
 
-void tegra_machine_dma_set_mask(struct platform_device *pdev);
-
 /* new helper functions for populating sound card DAI links and codec confs */
 int tegra_asoc_populate_dai_links(struct platform_device *pdev);
 int tegra_asoc_populate_codec_confs(struct platform_device *pdev);
diff --git a/sound/soc/tegra-alt/machine_drivers/tegra_machine_driver_mobile.c b/sound/soc/tegra-alt/machine_drivers/tegra_machine_driver_mobile.c
index efe40550..5ad2797d 100644
--- a/sound/soc/tegra-alt/machine_drivers/tegra_machine_driver_mobile.c
+++ b/sound/soc/tegra-alt/machine_drivers/tegra_machine_driver_mobile.c
@@ -854,8 +854,6 @@ static int tegra_machine_driver_probe(struct platform_device *pdev)
 		dev_dbg(&pdev->dev, "Missing property mclk-fs\n");
 	}
 
-	tegra_machine_dma_set_mask(pdev);
-
 	ret = add_dai_links(pdev);
 	if (ret < 0)
 		goto cleanup_asoc;
diff --git a/sound/soc/tegra-alt/utils/tegra_asoc_machine_alt.c b/sound/soc/tegra-alt/utils/tegra_asoc_machine_alt.c
index feb75221..89777baa 100644
--- a/sound/soc/tegra-alt/utils/tegra_asoc_machine_alt.c
+++ b/sound/soc/tegra-alt/utils/tegra_asoc_machine_alt.c
@@ -17,7 +17,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/dma-mapping.h>
 #include <linux/of.h>
 #include <linux/version.h>
 #include <sound/jack.h>
@@ -3879,22 +3878,6 @@ int tegra_machine_add_codec_jack_control(struct snd_soc_card *card,
 }
 EXPORT_SYMBOL_GPL(tegra_machine_add_codec_jack_control);
 
-void tegra_machine_dma_set_mask(struct platform_device *pdev)
-{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
-	struct device_node *np = pdev->dev.of_node;
-	uint64_t dma_mask;
-	int ret;
-
-	ret = of_property_read_u64(np, "dma-mask", &dma_mask);
-	if (ret)
-		dev_err(&pdev->dev, "Missing property dma-mask\n");
-	else
-		dma_set_mask_and_coherent(&pdev->dev, dma_mask);
-#endif
-}
-EXPORT_SYMBOL_GPL(tegra_machine_dma_set_mask);
-
 void release_asoc_phandles(struct tegra_machine *machine)
 {
 	unsigned int i;