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mem: Increase the default buffer sizes for the DDR4 controller
author
Andreas Hansson
<andreas.hansson@arm.com>
Fri, 3 Jul 2015 14:14:48 +0000
(10:14 -0400)
committer
Andreas Hansson
<andreas.hansson@arm.com>
Fri, 3 Jul 2015 14:14:48 +0000
(10:14 -0400)
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
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diff --git
a/src/mem/DRAMCtrl.py
b/src/mem/DRAMCtrl.py
index ef187a31ca2b4d2897dc7951c72c912ba057d02f..d0201152611d2549512eedbce19bed12f9281d48 100644
(file)
--- 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'