2 Apr
2015
2 Apr
'15
10:07 a.m.
On Tue, 2015-03-31 at 13:20 +0300, Alexey Brodkin wrote:
With recent changes in mother-board firmware DMA works properly with data cache enabled. So we enable data cache for the board in defconfig to gain significant improvement in performance.
Even though NAND controller seem to work fine now I discovered yet unknown problem with class 10 SD cards. If data cache is enabled I see error messages like "Invalid FAT entry". Once data cache is disabled I see very nice and clean reads: --->8--- AXS# fatload mmc 0 0x83000000 uimage reading uimage 7354948 bytes read in 315 ms (22.3 MiB/s) --->8---
So before enabling data cache on AXS101 I'll need to fix this issue with SD-cards. Deferring this patch for now.
-Alexey