Just a note, that this caused a regression [1]. Denis had already reported the regression in the board status repository, but was one commit off [2].

Reverting this commit here on top of master and, to fix the now caught build error, revert commit b2a10f8264 (devicetree: Remove weak declarations for ops), Ifb783e2f733d5c65c615e5c1879e3e4c7a83e049 [3], gets rid of the hang.

I’ll try to figure out, what is wrong with the Super I/O settings in the devicetree.

[1]: https://mail.coreboot.org/hyperkitty/list/coreboot@coreboot.org/thread/5GCRUSMY3EXZ524L2NEW7HIY3TWOQXSC/
     "Asus F2A85-M Pro: Accessing DMA1_RESET_REG in `isa_dma_init()` hangs system"
[2]: https://review.coreboot.org/cgit/board-status.git/commit/asus/f2a85-m/4.10-942-ga89c82e4021/2019-10-08T12_59_37Z/cbfs.txt?id=a922631d481cec9951be67b2c6c208f74054676f
[3]: https://review.coreboot.org/c/coreboot/+/35086

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