From: Łukasz Majewski Date: Tue, 14 Jan 2014 07:02:26 +0000 (+0100) Subject: config: Update envs for trats and trats2 - Disable L2 cache X-Git-Tag: v2014.01~19 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=c4e96dbfccef3d8089d94b23e3724ac313c68886;p=oweals%2Fu-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 Acked-by: Minkyu Kang --- 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