From: Greg Davill <greg.davill@gmail.com>
Date: Sat, 25 Jan 2020 02:41:39 +0000 (+1030)
Subject: soc/software/bios/sdram: On ECP5 strobe dly_sel after read leveling
X-Git-Tag: 24jan2021_ls180~712^2~1
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f84f57d651eaf80f85e0bfa8c37f723be603ef1d;p=litex.git

soc/software/bios/sdram: On ECP5 strobe dly_sel after read leveling
---

diff --git a/litex/soc/software/bios/sdram.c b/litex/soc/software/bios/sdram.c
index f7d8458c..15d5e1e9 100644
--- a/litex/soc/software/bios/sdram.c
+++ b/litex/soc/software/bios/sdram.c
@@ -943,6 +943,13 @@ int sdrlevel(void)
 		printf("\n");
 	}
 
+#ifdef ECP5DDRPHY
+	/* Toggle all dly_sel lines. 
+	 * Which toggles all DQSBUFM.PAUSE lines, this ensures they're using the correct delays. */
+	ddrphy_dly_sel_write(0xFF);
+	ddrphy_dly_sel_write(0);
+#endif
+
 	return 1;
 }
 #endif