diff --git a/drivers/mmc/host/sdhci-pic32.c b/drivers/mmc/host/sdhci-pic32.c
index 72c13b6f05f9..a6caa49ca25a 100644
--- a/drivers/mmc/host/sdhci-pic32.c
+++ b/drivers/mmc/host/sdhci-pic32.c
@@ -97,7 +97,7 @@ static const struct sdhci_ops pic32_sdhci_ops = {
 	.get_ro = pic32_sdhci_get_ro,
 };
 
-static struct sdhci_pltfm_data sdhci_pic32_pdata = {
+static const struct sdhci_pltfm_data sdhci_pic32_pdata = {
 	.ops = &pic32_sdhci_ops,
 	.quirks = SDHCI_QUIRK_NO_HISPD_BIT,
 	.quirks2 = SDHCI_QUIRK2_NO_1_8_V,
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index f953f35c2624..a34434166ca7 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -337,7 +337,7 @@ static const struct sdhci_ops pxav3_sdhci_ops = {
 	.set_uhs_signaling = pxav3_set_uhs_signaling,
 };
 
-static struct sdhci_pltfm_data sdhci_pxav3_pdata = {
+static const struct sdhci_pltfm_data sdhci_pxav3_pdata = {
 	.quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK
 		| SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
 		| SDHCI_QUIRK_32BIT_ADMA_SIZE