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SubjectRe: HiKey boot hangs with Linus' HEAD due to coresight dts changes?
On Thu, Nov 16, 2017 at 5:54 PM, John Stultz <john.stultz@linaro.org> wrote:
> 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.

If its helpful, the full tree I'm using (with the problematic patch
reverted - as well as a few other needed fixups for recent
regressions) is here:
https://git.linaro.org/people/john.stultz/android-dev.git
dev/hikey-mainline-WIP

I'm using the "hikey_defconfig" added in the patchset to build with.

thanks
-john
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