On On Wed, 2015-01-07 at 18:37 +0000, Sjoerd Simons writes wrote: >On Wed, 2015-01-07 at 18:37 +0000, Anand Moon wrote:> [...]
>> Only 4 core cpu's are on my board. Also CpuFreq is not working. > > Can you share some point on this. >The defconfig is using the bL switcher, which pairs up big and little cores to >make them appear as one core.. So for 8 real cores, you'll get >4 "virtual cores". That configuration is appropriate for the 5420, which allegedly has a hardware bug in the cache-coherence between the Cortex-A7 block and the Cortex-A15 block. Newer Exynos 5 SoCs -- 5422/5800, 5620, etc -- don't have that bug. The scheduler should configured to do HMP on all 8 (or 6) cores. I don't have a 5410, but I assume it has the same bug as the 5420. The XU3 kernel supplied by HardKernel shows all 8 cores, and does HMP scheduling across all 8. I tried v1.0 of the Odroid-XU3 DTB patch, applied to linux-next 20150107. I'm only seeing 1 core running on my Odroid-XU3. The USB 3.0 port works (great!) but I'm not getting any HDMI output. I didn't try DisplayPort. I'll gladly try v2 of the patch on an XU3; is there a better base to apply the patch to?
