Re: [PATCH v3] clk: qcom: ipq-cmn-pll: keep the CMN block bus clocks enabled

[Stanislaw Pal <kuncy7@gmail.com>]

Recording a tag that came in off-list, so it does not get lost: a second
user hit the same hang independently, on a board neither I nor anyone in
this thread has touched.

Georg Seema is bringing up a Cudy P5 (also IPQ5018). Without this patch
the board hangs during boot; with it applied it boots reliably. He found
the patch on his own while debugging that hang, and gave the tag on the
OpenWrt pull request that carries it:

  https://github.com/openwrt/openwrt/pull/24653

Tested-by: Georg Seema <georgseema@gmail.com>

That makes three IPQ5018 boards from three vendors - TP-Link Archer AX55
v1, GL.iNet GL-B3000 and Cudy P5 - where gating the CMN block bus clocks
after probe kills the boot, and holding the reference fixes it.

I am not repeating the earlier arguments here. The bisection of the
fatal access is still on my list and I will come back with v4 and a
corrected explanation once I have named the register and the code path,
rather than before.

Thanks,
Stanislaw