[PATCH 5/7] mmc: sdhci-of-k1: Use finest delay granularity for RX tuning

[Yixun Lan]

From: Long Wan <long.wan at linux.spacemit.com>

Initialize the RX delay line to 0 (finest step size) instead of 9.
This improves tuning precision by allowing smaller delay increments
when searching for the optimal sampling point.

Fixes: e9cb83c10071 ("mmc: sdhci-of-k1: add comprehensive SDR tuning support")
Signed-off-by: Long Wan <long.wan at linux.spacemit.com>
Signed-off-by: Yixun Lan <dlan at kernel.org>
---
 drivers/mmc/host/sdhci-of-k1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-of-k1.c b/drivers/mmc/host/sdhci-of-k1.c
index be770e8a9884..257c954ce587 100644
--- a/drivers/mmc/host/sdhci-of-k1.c
+++ b/drivers/mmc/host/sdhci-of-k1.c
@@ -84,7 +84,7 @@
 #define  SDHC_RX_DLINE_GAIN             BIT(8)
 #define  SDHC_TX_DLINE_REG_MASK         GENMASK(23, 16)
 
-#define SPACEMIT_RX_DLINE_REG		9
+#define SPACEMIT_RX_DLINE_REG		0
 #define SPACEMIT_RX_TUNE_DELAY_MIN	0x0
 #define SPACEMIT_RX_TUNE_DELAY_MAX	0xFF
 

-- 
2.55.0