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From: Seb <sebtx452@gmail.com>
To: John Crispin <john@phrozen.org>
Cc: linux-mtd@lists.infradead.org, linux-mips@linux-mips.org
Subject: Re: [PATCH] mtd: maps: lantiq-flash: Check if the EBU endianness swap is enabled
Date: Wed, 18 Jan 2017 14:48:33 +0100	[thread overview]
Message-ID: <CA+hF=GeD0dhBUkR+wR_35pSXgSnU0kW6EfYWa9h2QrGOTReMnA@mail.gmail.com> (raw)
In-Reply-To: <e5bb2245-a0d0-5b66-2c75-9af26c6ea846@phrozen.org>

Hi John,


>>
>>       ltq_mtd->map->map_priv_1 = LTQ_NOR_PROBING;
>
> this line should be dropped

Yes, I noticed this mistake. I fixed it but forgotten to add thix fix
to my commit -_-

>> +     /* We swap the addresses only if the EBU endianness swap is disabled */
>> +     if (ltq_ebu_r32(LTQ_EBU_BUSCON0) & BIT(30))
>
> add a define for BIT(30) please and we should really check if this a
> v1.2 or newer. if my memory is correct this was a silicon bug inside
> v1.0 and v1.1

In my kernel (OpenWrt) boot log I have :

[    0.000000] Linux version 4.4.14 (qa@serveurQA) (gcc version 5.3.0
(OpenWrt GCC 5.3.0 50020) ) #150 SMP Tue Jan 17 09:18:24 UTC 2017
[    0.000000] SoC: xRX200 rev 1.2
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019556 (MIPS 34Kc)

It would be better to ensure that the SoC version is >= 1.2 (as this
bug was fixed in this version).

You can get more informations in my OpenWrt pull request :

https://github.com/openwrt/openwrt/pull/321


Regards,

Sebastien.

  reply	other threads:[~2017-01-18 13:48 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-18 12:10 Sebastien Decourriere
2017-01-18 12:38 ` John Crispin
2017-01-18 13:48   ` Seb [this message]
2017-01-18 13:51     ` John Crispin
2017-01-18 17:12       ` Seb
2017-01-19 10:06 Sebastien Decourriere
2017-01-19 23:50 ` Langer, Thomas
2017-01-20  9:33 Sebastien Decourriere
2017-01-24 17:03 ` Ralf Baechle
2017-01-24 21:32 ` Hauke Mehrtens
2017-01-25  9:04   ` Seb
2017-01-25 16:58     ` Langer, Thomas
2017-01-26 11:02       ` Seb
2017-01-26 16:01         ` Langer, Thomas

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