Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2025-03-17 23:37:01 +00:00
Code Issues Projects Releases Packages Wiki Activity

config: Update envs for trats and trats2 - Disable L2 cache

Browse source 
Disable L2 caches for Trats and Trats2 devices.

It turns out that for data downloading with thordown command L2 cache
disablement brings a significant speed improvement.

rootfs - 400 MiB:
- L2 cache enabled:			2.69 MiB/s
- L2 cache disabled: 			5.56 MiB/s

Such improvement is possible due to reduction of the need to invalidate
redundant data, which resides in L2 cache.

Since the sent USB request size at once is 512B (L1 - 32 KiB in total) -
one can be quite confident that it is already available in L1 and L2 can
be disabled.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Łukasz Majewski 2014-01-14 08:02:26 +01:00 • committed by Tom Rini
parent cdd15bcebc
commit c4e96dbfcc
2 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
include/configs/trats.h
View file

@ -27,6 +27,7 @@
#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_DISPLAY_BOARDINFO
#define CONFIG_SYS_L2CACHE_OFF
#ifndef CONFIG_SYS_L2CACHE_OFF
#define CONFIG_SYS_L2_PL310
#define CONFIG_SYS_PL310_BASE 0x10502000

1
include/configs/trats2.h
View file

@ -30,6 +30,7 @@
#define CONFIG_SYS_CACHELINE_SIZE 32
#define CONFIG_SYS_L2CACHE_OFF
#ifndef CONFIG_SYS_L2CACHE_OFF
#define CONFIG_SYS_L2_PL310
#define CONFIG_SYS_PL310_BASE 0x10502000