From 7e711c98f8fcd949b9430bbf243d60348d0ef28b Mon Sep 17 00:00:00 2001
From: Andreas Hansson <andreas.hansson@arm.com>
Date: Fri, 3 Jul 2015 10:14:48 -0400
Subject: [PATCH] mem: Increase the default buffer sizes for the DDR4
 controller

This patch increases the default read/write buffer sizes for the DDR4
controller config to values that are more suitable for the high
bandwidth and high bank count.
---
 src/mem/DRAMCtrl.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mem/DRAMCtrl.py b/src/mem/DRAMCtrl.py
index ef187a31c..d02011526 100644
--- a/src/mem/DRAMCtrl.py
+++ b/src/mem/DRAMCtrl.py
@@ -522,6 +522,11 @@ class DDR4_2400_x64(DRAMCtrl):
     # constraints incurred by the bank groups
     banks_per_rank = 16
 
+    # override the default buffer sizes and go for something larger to
+    # accommodate the larger bank count
+    write_buffer_size = 128
+    read_buffer_size = 64
+
     # 1200 MHz
     tCK = '0.833ns'