diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index fa6c188e0327..82150a966391 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -130,7 +130,7 @@ static unsigned int renesas_sdhi_clk_update(struct tmio_mmc_host *host,
 	unsigned int freq, diff, best_freq = 0, diff_min = ~0;
 	int i, ret;
 
-	/* tested only on RCar Gen2+ currently; may work for others */
+	/* tested only on R-Car Gen2+ currently; may work for others */
 	if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
 		return clk_get_rate(priv->clk);
 
diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index a1520d88ebf3..c83c16b931a8 100644
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -66,7 +66,7 @@
  */
 #define TMIO_MMC_SDIO_IRQ		(1 << 2)
 
-/* Some features are only available or tested on RCar Gen2 or later */
+/* Some features are only available or tested on R-Car Gen2 or later */
 #define TMIO_MMC_MIN_RCAR2		(1 << 3)
 
 /*