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| author | Łukasz Majewski <l.majewski@samsung.com> | 2014-01-14 08:02:26 +0100 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-01-17 08:04:28 -0500 |
| commit | c4e96dbfccef3d8089d94b23e3724ac313c68886 (patch) | |
| tree | d784d9b753da57823d82587aada77536e41551ea | |
| parent | cdd15bcebc6ddd5365f2a1133f56cd3209f30288 (diff) | |
| download | u-boot-imx-c4e96dbfccef3d8089d94b23e3724ac313c68886.zip u-boot-imx-c4e96dbfccef3d8089d94b23e3724ac313c68886.tar.gz u-boot-imx-c4e96dbfccef3d8089d94b23e3724ac313c68886.tar.bz2 | |
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>
| -rw-r--r-- | include/configs/trats.h | 1 | ||||
| -rw-r--r-- | include/configs/trats2.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/include/configs/trats.h b/include/configs/trats.h index 0bdfe86..fdd8b46 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 f335280..892dd8e 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 |