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Date:   Fri, 1 Jul 2022 16:08:48 +0100
From:   Sudeep Holla <sudeep.holla@arm.com>
To:     Saravana Kannan <saravanak@google.com>
Cc:     Tony Lindgren <tony@atomide.com>, Rob Herring <robh@kernel.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Kevin Hilman <khilman@kernel.org>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>,
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        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
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Subject: Re: [PATCH v2 1/9] PM: domains: Delete usage of
 driver_deferred_probe_check_state()
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Hi, Saravana,

On Fri, Jul 01, 2022 at 01:26:12AM -0700, Saravana Kannan wrote:

[...]

> Can you check if this hack helps? If so, then I can think about
> whether we can pick it up without breaking everything else. Copy-paste
> tab mess up warning.

Sorry for jumping in late and not even sure if this is right thread.
I have not bisected anything yet, but I am seeing issues on my Juno R2
with SCMI enabled power domains and Coresight AMBA devices.

OF: amba_device_add() failed (-19) for /etf@20010000
OF: amba_device_add() failed (-19) for /tpiu@20030000
OF: amba_device_add() failed (-19) for /funnel@20040000
OF: amba_device_add() failed (-19) for /etr@20070000
OF: amba_device_add() failed (-19) for /stm@20100000
OF: amba_device_add() failed (-19) for /replicator@20120000
OF: amba_device_add() failed (-19) for /cpu-debug@22010000
OF: amba_device_add() failed (-19) for /etm@22040000
OF: amba_device_add() failed (-19) for /cti@22020000
OF: amba_device_add() failed (-19) for /funnel@220c0000
OF: amba_device_add() failed (-19) for /cpu-debug@22110000
OF: amba_device_add() failed (-19) for /etm@22140000
OF: amba_device_add() failed (-19) for /cti@22120000
OF: amba_device_add() failed (-19) for /cpu-debug@23010000
OF: amba_device_add() failed (-19) for /etm@23040000
OF: amba_device_add() failed (-19) for /cti@23020000
OF: amba_device_add() failed (-19) for /funnel@230c0000
OF: amba_device_add() failed (-19) for /cpu-debug@23110000
OF: amba_device_add() failed (-19) for /etm@23140000
OF: amba_device_add() failed (-19) for /cti@23120000
OF: amba_device_add() failed (-19) for /cpu-debug@23210000
OF: amba_device_add() failed (-19) for /etm@23240000
OF: amba_device_add() failed (-19) for /cti@23220000
OF: amba_device_add() failed (-19) for /cpu-debug@23310000
OF: amba_device_add() failed (-19) for /etm@23340000
OF: amba_device_add() failed (-19) for /cti@23320000
OF: amba_device_add() failed (-19) for /cti@20020000
OF: amba_device_add() failed (-19) for /cti@20110000
OF: amba_device_add() failed (-19) for /funnel@20130000
OF: amba_device_add() failed (-19) for /etf@20140000
OF: amba_device_add() failed (-19) for /funnel@20150000
OF: amba_device_add() failed (-19) for /cti@20160000

These are working fine with deferred probe in the mainline.
I tried the hack you have suggested here(rather Tony's version), also
tried with fw_devlink=0 and fw_devlink=1 && fw_devlink.strict=0
No change in the behaviour.

The DTS are in arch/arm64/boot/dts/arm/juno-*-scmi.dts and there
coresight devices are mostly in juno-cs-r1r2.dtsi

Let me know if there is anything obvious or you want me to bisect which
means I need more time. I can do that next week.

-- 
Regards,
Sudeep