[U-Boot] [PATCH 09/13] mmc: tmio: sdhi: Touch SCC only when UHS capable

Marek Vasut marek.vasut at gmail.com
Wed Oct 31 17:16:02 UTC 2018


Add check to avoid touching the SCC tuning registers in case the IP
doesn't support them or if the support isn't in place yet.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
---
 drivers/mmc/renesas-sdhi.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/renesas-sdhi.c b/drivers/mmc/renesas-sdhi.c
index 1590f496d7..6b5871a0ae 100644
--- a/drivers/mmc/renesas-sdhi.c
+++ b/drivers/mmc/renesas-sdhi.c
@@ -294,7 +294,8 @@ static int renesas_sdhi_set_ios(struct udevice *dev)
 #if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
 	struct tmio_sd_priv *priv = dev_get_priv(dev);
 
-	renesas_sdhi_reset_tuning(priv);
+	if (priv->caps & TMIO_SD_CAP_RCAR_UHS)
+		renesas_sdhi_reset_tuning(priv);
 #endif
 
 	return ret;
@@ -371,7 +372,7 @@ static int renesas_sdhi_probe(struct udevice *dev)
 
 	ret = tmio_sd_probe(dev, quirks);
 #if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
-	if (!ret)
+	if (!ret && (priv->caps & TMIO_SD_CAP_RCAR_UHS))
 		renesas_sdhi_reset_tuning(priv);
 #endif
 	return ret;
-- 
2.18.0



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