From: Łukasz Majewski <l.majewski@samsung.com>
Date: Tue, 14 Jan 2014 07:02:26 +0000 (+0100)
Subject: config: Update envs for trats and trats2 - Disable L2 cache
X-Git-Tag: v2025.01-rc5-pxa1908~15479^2~67
X-Git-Url: http://git.dujemihanovic.xyz/html/static/gitweb.css?a=commitdiff_plain;h=c4e96dbfccef3d8089d94b23e3724ac313c68886;p=u-boot.git

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

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>
---

diff --git a/include/configs/trats.h b/include/configs/trats.h
index 0bdfe86477..fdd8b460b0 100644
--- a/include/configs/trats.h
+++ b/include/configs/trats.h
@@ -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
diff --git a/include/configs/trats2.h b/include/configs/trats2.h
index f335280c0d..892dd8e889 100644
--- a/include/configs/trats2.h
+++ b/include/configs/trats2.h
@@ -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