[U-Boot] [PATCH v1 20/22] colibri_vf: adjust timing according to data sheet

[Marcel Ziswiler]

From: Stefan Agner <stefan.agner at toradex.com>

Using the DDR Validation tool in Processor Expert uncovered two
timing inconsistencies. Since those timings are related to the
suspend mode they do not affect or change regular memory behaviour.

Signed-off-by: Stefan Agner <stefan.agner at toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>

---

 board/toradex/colibri_vf/colibri_vf.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/board/toradex/colibri_vf/colibri_vf.c b/board/toradex/colibri_vf/colibri_vf.c
index d28a73332a..8c4909af54 100644
--- a/board/toradex/colibri_vf/colibri_vf.c
+++ b/board/toradex/colibri_vf/colibri_vf.c
@@ -99,15 +99,21 @@ int dram_init(void)
 		.tras_lockout      = 0,
 		.tdal              = 12,
 		.bstlen            = 3,
-		.tdll              = 512,
+		.tdll              = 512, /* not applicable since freq. scaling
+					   * is not used
+					   */
 		.trp_ab            = 6,
 		.tref              = 3120,
 		.trfc              = 64,
 		.tref_int          = 0,
 		.tpdex             = 3,
 		.txpdll            = 10,
-		.txsnr             = 48,
-		.txsr              = 468,
+		.txsnr             = 68,  /* changed to conform to JEDEC
+					   * specifications
+					   */
+		.txsr              = 506, /* changed to conform to JEDEC
+					   * specifications
+					   */
 		.cksrx             = 5,
 		.cksre             = 5,
 		.freq_chg_en       = 0,
-- 
2.20.1