Am 19.08.2013 15:55, schrieb Fabio Estevam:
Hi,
I notice slow tftp transfer on mx53qsb and I suspected it could be due to L2 cache being disabled.
Tried enabling with:
--- a/arch/arm/cpu/armv7/mx5/lowlevel_init.S +++ b/arch/arm/cpu/armv7/mx5/lowlevel_init.S @@ -45,6 +45,11 @@ #endif
mcr 15, 1, r0, c9, c0, 2
/* enable L2 cache */mrc 15, 0, r0, c1, c0, 1orr r0, r0, #(1 << 1) /* enable l2 cache */mcr 15, 0, r0, c1, c0, 1.endm /* init_l2cc */
/* AIPS setup - Only setup MPROTx registers.
,but still see the same low tftp throughput (720 kB/s - on mx28 I see the double rate).
Any suggestions as to how properly enable L2 cache on mx53?
Is the mx53 L2 cache the same like on mx6?
If so, besides enabling it, it needs a proper configuration. Have a look to
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5...
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b...
Best regards
Dirk