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<[Matt]>
Howdy all! I don't suppose anyone has tried dynamic reconfig. of iCE40 SB_PLL40_CORE on a HX part? (I noticed DR mentioned on the icestorm wiki, but seems to have no effect on HX4K, am likely holding it wrong..)
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<tnt>
I only tried it on UP5k ... but I don't see why it wouldn't work on HX.
<[Matt]>
tnt: I did not, is that required? (-> will try it, thx)
<[Matt]>
I feared TEST_MODE would lead to explosions or weird undef stuff
<[Matt]>
tnt: Aha! Many thanks, that helps (though the output is /4 from the programmed value, something's shifted :/ ) The wiki has a discrepancy, "25 bits, or 26 bits for the UP5k" followed by a 26/27b list, am I reading that right?
<[Matt]>
tnt: Got it working; seems 0=genclk for plloutXSel (not 2). (Using 2 as per wiki I noticed [21] affected output rate which IIUC it shouldn't, indicates SHIFTREG was being used.) Do you have perms to update the wiki to mention this (and TEST_MODE, and s/25/26/)? Thanks 1E6 for the mode hint!