commit 143309fad45e01c623036c981d568cfb3bd5662f
author Angel Pons <th3fanbus@gmail.com> Sat Mar 21 21:38:16 2020 +0100
committer Patrick Georgi <pgeorgi@google.com> Mon Mar 23 09:45:26 2020 +0000
tree 324b256f5d707f6c8d2fc99ccb231db460cdfeb4
parent 66f569f4aed42cb1995866a887c9eb780fa7f432

nb/intel/sandybridge: Remove oddball `- 1` in tRFC

Fixes a blunder in commit 50db9c99be7e09aafb7cfd353bd0ac9878b76fca
(nb/intel/sandybridge: Use DIV_ROUND_UP macro to select timings).

Tested on Asus P8Z77-V LX2, still boots fine with an i7-2600.

Change-Id: I73436b9f7df9f3a065469fb89bcd0cc6183bb774
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39736
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/northbridge/intel/sandybridge/raminit_sandy.c

diff --git a/src/northbridge/intel/sandybridge/raminit_sandy.c b/src/northbridge/intel/sandybridge/raminit_sandy.c
index 3b68c22..c554c3a 100644
--- a/src/northbridge/intel/sandybridge/raminit_sandy.c
+++ b/src/northbridge/intel/sandybridge/raminit_sandy.c
@@ -281,7 +281,7 @@
 	printk(BIOS_DEBUG, "Selected tWTR          : %uT\n", ctrl->tWTR);
 
 	/* Refresh-to-Active or Refresh-to-Refresh (tRFC) */
-	ctrl->tRFC = DIV_ROUND_UP(ctrl->tRFC, ctrl->tCK - 1);	/* FIXME: Why the -1 ? */
+	ctrl->tRFC = DIV_ROUND_UP(ctrl->tRFC, ctrl->tCK);
 	printk(BIOS_DEBUG, "Selected tRFC          : %uT\n", ctrl->tRFC);
 
 	ctrl->tREFI     =     get_REFI(ctrl->tCK);