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Date:   Tue, 28 Mar 2023 09:33:02 +0200
From:   Marco Felsch <m.felsch@pengutronix.de>
To:     Greg Ungerer <gerg@linux-m68k.org>
Cc:     Ahmad Fatoum <a.fatoum@pengutronix.de>, peng.fan@nxp.com,
        Alexander Stein <alexander.stein@ew.tq-group.com>,
        abailon@baylibre.com, krzysztof.kozlowski+dt@linaro.org,
        festevam@gmail.com, abelvesa@kernel.org, marex@denx.de,
        Markus.Niebel@ew.tq-group.com, paul.elder@ideasonboard.com,
        gerg@kernel.org, linux-imx@nxp.com, devicetree@vger.kernel.org,
        "Peng Fan (OSS)" <peng.fan@oss.nxp.com>, linux-pm@vger.kernel.org,
        s.hauer@pengutronix.de, robh+dt@kernel.org, aford173@gmail.com,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        linux-kernel@vger.kernel.org, kernel@pengutronix.de,
        djakov@kernel.org, l.stach@pengutronix.de, shawnguo@kernel.org,
        laurent.pinchart@ideasonboard.com
Subject: Re: [PATCH V3 7/7] arm64: dts: imx8mp: add interconnect for hsio blk
 ctrl
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Hi Greg,

On 23-03-27, Greg Ungerer wrote:
> Hi Ahmad,
> 
> On 27/3/23 17:16, Ahmad Fatoum wrote:
> > On 27.03.23 08:27, Alexander Stein wrote:
> > > Am Montag, 27. M?rz 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.

Can you check that CONFIG_ARM_IMX_BUS_DEVFREQ is enabled? This is the
noc/interconnect driver. This could also the problem for you vpu issue.

Regards,
  Marco


> 
> Thanks
> Greg
> 
> 
> 
>