Re: [PATCH RESEND V3 1/2] pinctrl: fsl: add scu based pinctrl support

[Kevin Hilman <khilman@xxxxxxxxxxxx>]

"A.s. Dong" <aisheng.dong@xxxxxxx> writes:

> Some i.MX SoCs (e.g. MX8QXP and MX8QM) contain a system controller
> that is responsible for controlling the pad setting of the IPs that
> are present. Communication between the host processor running an OS
> and the system controller happens through a SCU protocol.
>
> This patch classifies the pad settings into two categories: MMIO and SCU.
> For the original MMIO method, no functional changes except organize them
> into a few imx_*_mmio() functions. Besides that, we add the SCU based
> Pad Mux and Pinconf setting support which are implemented in pinctrl-scu.c.

kernelCI found boot failure caused by this patch.

imx6 started failing in kernelCI in next-20181114 on several wand
boards[1].  There was no kernel output, after uboot started the kernel.

Using the imx6q-wandboard, I bisected it down to this commit.

I verified that reverting this commit on top of next-20181114 fixes the
problem.

Kevin

[1]
https://kernelci.org/boot/all/job/next/branch/master/kernel/next-20181114/