diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index 4c622ad26a7026aed08e382f63e4d369655d62ea..c9f251713611512b9f4c572c1537f71f9316fc69 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -778,6 +778,9 @@ static int meson_mmc_probe(struct platform_device *pdev)
 	if (ret)
 		goto free_host;
 
+	mmc->max_blk_count = CMD_CFG_LENGTH_MASK;
+	mmc->max_req_size = mmc->max_blk_count * mmc->max_blk_size;
+
 	/* data bounce buffer */
 	host->bounce_buf_size = SZ_512K;
 	host->bounce_buf =