When the CPU clock speed is set to 480 MHz by the U-Boot SPL, the performance of 'sunxi-fel write' transfers to DRAM improves from ~95 KB/s to ~510 KB/s.
When the CPU clock speed is set to 1008 MHz by the U-Boot SPL, the performance of 'sunxi-fel write' transfers to DRAM improves from ~180 KB/s to ~510 KB/s. This means that the CPU is not a bottleneck for FEL transfers anymore. Further performance improvements are possible by increasing the AHB1 clock speed in the U-Boot SPL (up to something like ~900 KB/s). Signed-off-by: Siarhei Siamashka <siarhei.siamas...@gmail.com> --- fel.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fel.c b/fel.c index 9a08af6..1544d18 100644 --- a/fel.c +++ b/fel.c @@ -487,6 +487,7 @@ soc_sram_info soc_sram_info_table[] = { { .soc_id = 0x1680, /* Allwinner H3 */ .scratch_addr = 0x2000, + .mmu_tt_addr = 0x44000, .thunk_addr = 0x46E00, .thunk_size = 0x200, .swap_buffers = a31_sram_swap_buffers, }, -- 2.4.10 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.