linux-kernel - Re: [PowerPC] [PASEMI] Issue with the identification of ATA drives after the of/irq updates 2024-05-29

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Message-ID: <68b7988d-eaaa-4713-99c3-525a34c5b322@xenosoft.de>
Date: Tue, 2 Jul 2024 19:55:38 +0200
From: Christian Zigotzky <chzigotzky@...osoft.de>
To: Marc Zyngier <maz@...nel.org>
Cc: Rob Herring <robh@...nel.org>, apatel@...tanamicro.com,
 DTML <devicetree@...r.kernel.org>,
 Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
 linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
 mad skateman <madskateman@...il.com>, "R.T.Dickinson" <rtd2@...a.co.nz>,
 Matthew Leaman <matthew@...on.biz>, Darren Stevens
 <darren@...vens-zone.net>, Christian Zigotzky <info@...osoft.de>
Subject: Re: [PowerPC] [PASEMI] Issue with the identification of ATA drives
 after the of/irq updates 2024-05-29

Hello Marc,

Thank you for your reply.

On 02.07.24 17:19, Marc Zyngier wrote:
> Christian,
>
> On Sun, 30 Jun 2024 11:21:55 +0100,
> Christian Zigotzky <chzigotzky@...osoft.de> wrote:
>> Hello,
>>
>> There is an issue with the identification of ATA drives with our
>> P.A. Semi Nemo boards [1] after the
>> commit "of/irq: Factor out parsing of interrupt-map parent
>> phandle+args from of_irq_parse_raw()" [2].
>>
>> Error messages:
>>
>> ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>> ata2.00: qc timeout after 10000 mssecs (cmd 0xec)
>>
>> Screenshots [3]
>>
>> I bisected yesterday [4] and "of/irq: Factor out parsing of
>> interrupt-map parent phandle+args from of_irq_parse_raw()" [2] is the
>> first bad commit.
>>
>> Then I created a patch for reverting this first bad commit. I also
>> reverted the changes in drivers/of/property.c. [5]
>>
>> The patched kernel boots with successful detection of the ATA devices.
>>
>> Please check the of/irq updates.
> It is hard to understand what is going on with so little information.
>
> Please provide the device tree for your platform. It isn't possible to
> debug this without it, no matter how many pictures you provide. If it
> doesn't exist in source form, you can dump it using:
>
> # dtc -I dtb /sys/firmware/fdt
>
> and posting the full output.
>
> Additionally, a full dmesg of both working and non working boots would
> be useful.
>
> Thanks,
>
> 	M.
>
The device tree of the Nemo board and further information: 
https://forum.hyperion-entertainment.com/viewtopic.php?p=54406#p54406

Cheers,
Christian