I'm starting to play around with cgminer (Zefir's version from sometime in Jan-Feb, before it was integrated). One thing I noticed was that the HW_RESET was not being done, thus it must be done by hand. No problem there. This next issue however is somewhat puzzling to me:
I set the sysclk to 200000 kHz (200MHz) in the --bitmine-a1-options, the debug output confirms this:
[2014-05-02 07:57:20] Started cgminer 3.9.0
[2014-05-02 07:57:20] SPI '/dev/spidev0.0': mode=1, bits=8, speed=800000
[2014-05-02 07:57:20] spidev0.0: Found 2 A1 chips
[2014-05-02 07:57:20] Setting PLL: CLK_REF=12MHz, SYS_CLK=200MHz
[2014-05-02 07:57:20] Setting PLL to pre_div=2, post_div=4, fb_div=133: 0x88 0x85 0x21 0x84 0x00 0x00
I did my testing between 180MHz and 480MHz, and the temps got as hot as 50C. Now, at 200MHz they get
blazing hot! I can't even touch them anymore.
Is this to be expected? Or is the PLL being misset somehow and I end up running at closer to 800MHz?