From fe7029a7e03b7f93c236ec798b51a461381e8d7e Mon Sep 17 00:00:00 2001
From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Thu, 22 Apr 2021 17:06:21 +0200
Subject: [PATCH] software/liblitedram: Add missing read window re-centering
 after selecting bitslip in Write DQ-DQS training.

---
 litex/soc/software/liblitedram/sdram.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/litex/soc/software/liblitedram/sdram.c b/litex/soc/software/liblitedram/sdram.c
index 79a85ab7e..af4096d45 100644
--- a/litex/soc/software/liblitedram/sdram.c
+++ b/litex/soc/software/liblitedram/sdram.c
@@ -1071,10 +1071,12 @@ static void sdram_read_leveling_best_bitslip(int module)
 		sdram_read_leveling_inc_bitslip(module);
 	}
 
-	/* Select best read window */
+	/* Select best read window and re-center it */
 	sdram_read_leveling_rst_bitslip(module);
 	for (bitslip=0; bitslip<best_bitslip; bitslip++)
 		sdram_read_leveling_inc_bitslip(module);
+	sdram_leveling_center_module(module, 0, 0,
+		sdram_read_leveling_rst_delay, sdram_read_leveling_inc_delay);
 }
 
 static void sdram_write_dq_dqs_training(void)