Re: [PATCH V3 7/7] arm64: dts: imx8mp: add interconnect for hsio blk ctrl

[Greg Ungerer]

Hi Ahmad,

On 27/3/23 17:16, Ahmad Fatoum wrote:
> On 27.03.23 08:27, Alexander Stein wrote:
> > Am Montag, 27. März 2023, 06:50:37 CEST schrieb Greg Ungerer:
> > > Any thoughts on why this breaks USB?
> >
> > Maybe you are missing CONFIG_INTERCONNECT_IMX8MP?
>
> And if that's the case, did you check /sys/kernel/debug/devices_deferred
> to see if there was any indication that this is the reason?

Yeah, it does:

    # cat /sys/kernel/debug/devices_deferred
    32f10100.usb	platform: supplier 32f10000.blk-ctrl not ready
    32f10108.usb	platform: supplier 32f10000.blk-ctrl not ready
    32ec0000.blk-ctrl	imx8m-blk-ctrl: failed to get noc entries
    381f0040.usb-phy	platform: supplier 32f10000.blk-ctrl not ready
    382f0040.usb-phy	platform: supplier 32f10000.blk-ctrl not ready
    imx-pgc-domain.11	
    imx-pgc-domain.12	
    imx-pgc-domain.13	
    38330000.blk-ctrl	platform: supplier imx-pgc-domain.11 not ready
    32f10000.blk-ctrl	imx8mp-blk-ctrl: failed to get noc entries

As far as I can tell blk-ctrl should be good:

    #
    # i.MX SoC drivers
    #
    CONFIG_IMX_GPCV2_PM_DOMAINS=y
    CONFIG_SOC_IMX8M=y
    # CONFIG_SOC_IMX9 is not set
    CONFIG_IMX8M_BLK_CTRL=y
    # end of i.MX SoC drivers


> If you didn't find any hint there, you might want to place a
> dev_err_probe with a suitable message at the place where -EPROBE_DEFER
> was returned.

I will try that.

Thanks
Greg