1 files changed, 11 insertions, 0 deletions
diff --git a/include/mmc.h b/include/mmc.h
index 4ecd6c744c5..85fc3497a14 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -896,6 +896,17 @@ int mmc_get_env_dev(void);
  */
 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc);
 
+/**
+ * mmc_send_ext_csd() - read the extended CSD register
+ *
+ * @mmc:	MMC device
+ * @ext_csd	a cache aligned buffer of length MMC_MAX_BLOCK_LEN allocated by
+ *		the caller, e.g. using
+ *		ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN)
+ * Return:	0 for success
+ */
+int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd);
+
 static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
 {
 	return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;