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SubjectHiKey boot hangs with Linus' HEAD due to coresight dts changes?
Testing with Linus' HEAD today on the HiKey board, I started seeing boot hangs:

[ 0.677971] Serial: AMBA PL011 UART driver
[ 0.694299] pstore: using zlib compression
[ 0.698830] console [pstore-1] enabled
[ 0.702623] pstore: Registered ramoops as persistent store backend
[ 0.708880] ramoops: attached 0x100000@0x21f00000, ecc: 0/0
[ 0.715847] f8015000.uart: ttyAMA0 at MMIO 0xf8015000 (irq = 7,
base_baud = 0) is a PL011 rev2
[ 0.725011] uart-pl011 f7111000.uart: could not find pctldev for
node /soc/pinmux@f7010000/uart1_pmx_func, deferring probe
[ 0.736375] uart-pl011 f7112000.uart: could not find pctldev for
node /soc/pinmux@f7010000/uart2_pmx_func, deferring probe
<hangs here>

Bisecting this down, points to:
0b79842775fa ("arm64: dts: hi6220: add coresight dt nodes")

Reverting this patch makes things work again.

Any ideas as to what might be wrong?

Please let me know if I can test any fixes or provide any additional info.

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