[U-Boot] [PATCH 13/13] mmc: tmio: sdhi: Merge DTCNTL access into single register write

Marek Vasut marek.vasut at gmail.com
Wed Oct 31 17:16:06 UTC 2018


It is perfectly fine to write th DTCNTL TAP count and enable the
SCC sampling clock operation in the same write.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
 drivers/mmc/renesas-sdhi.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/renesas-sdhi.c b/drivers/mmc/renesas-sdhi.c
index 813cf8749b..05a100754a 100644
--- a/drivers/mmc/renesas-sdhi.c
+++ b/drivers/mmc/renesas-sdhi.c
@@ -51,12 +51,9 @@ static unsigned int renesas_sdhi_init_tuning(struct tmio_sd_priv *priv)
 	tmio_sd_writel(priv, reg, TMIO_SD_CLKCTL);
 
 	/* Set sampling clock selection range */
-	tmio_sd_writel(priv, 0x8 << RENESAS_SDHI_SCC_DTCNTL_TAPNUM_SHIFT,
-			   RENESAS_SDHI_SCC_DTCNTL);
-
-	reg = tmio_sd_readl(priv, RENESAS_SDHI_SCC_DTCNTL);
-	reg |= RENESAS_SDHI_SCC_DTCNTL_TAPEN;
-	tmio_sd_writel(priv, reg, RENESAS_SDHI_SCC_DTCNTL);
+	tmio_sd_writel(priv, (0x8 << RENESAS_SDHI_SCC_DTCNTL_TAPNUM_SHIFT) |
+			     RENESAS_SDHI_SCC_DTCNTL_TAPEN,
+			     RENESAS_SDHI_SCC_DTCNTL);
 
 	reg = tmio_sd_readl(priv, RENESAS_SDHI_SCC_CKSEL);
 	reg |= RENESAS_SDHI_SCC_CKSEL_DTSEL;
-- 
2.18.0



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