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<la_mettrie>
on FreeBSD i get various kind of crashes during the boot if i try to modify JH7110's (visionfive2) syscon registers (more specifically: sys_syscon used by pll clock).
<la_mettrie>
if mcause is seen, it seems to be 'load access fault' or 'illegal instruction'. crashes can happen in several places and have several forms (sometimes just total halt without any kind of error message).
<la_mettrie>
what kind of issue this might be and how it might be possible to debug it?
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<geertu>
la_mettrie: You disabled a critical clock that must be running when accessing a hardware register?
<geertu>
drewfustini: Does that mean there will be an FLOSS FPGA toolchain for MPFS soon?
<drewfustini>
Unfortunately, I'm not sure about that.
<la_mettrie>
geertu: okay, that might make sense that a faulty set_pll_freq() is the reason for crashes if it effectually disables the clock. i've checked several times it should write the same values as it does on linux but... there may be something wrong there nevertheless
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<conchuod>
palmer: is evan on here?
<palmer>
conchuod: not usually
<conchuod>
Ok, ty
<palmer>
I can poke him if you want, though
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<conchuod>
Palmer there's an RT thread on linux-riscv from today that he should look at
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<conchuod>
It's relevant to his parallel misaligned access stuff
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<smaeul>
pabs3: are you looking specifically for one of the new boards, or just any RISC-V board with USB gadget support? because all of the D1 boards have USB gadget support on mainline Linux