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Date:	Sun, 12 Apr 2015 16:02:12 +0300
From:	Andrew <>
To:	Sebastian Hesselbarth <>
Cc:	Rob Herring <>, Pawel Moll <>,
	Mark Rutland <>,
	Ian Campbell <>,
	Kumar Gala <>,
	Russell King <>,
	Linus Walleij <>,
	Wolfram Sang <>,,,,, Andrew Lunn <>,
	Gregory Clement <>,
	Jason Cooper <>
Subject: Re: Fwd: Re: [PATCH 2/2] ARM: mvebu: dts: Add dts file for DLink  DNS-327L

Sebastian Hesselbarth писал 12.04.2015 15:16:
> On 12.04.2015 13:43, Andrew wrote:
>> Sebastian Hesselbarth писал 12.04.2015 14:20:
>>> On 11.04.2015 22:29, Andrew Andrianov wrote:
>>>> Signed-off-by: Andrew Andrianov <>
> [...]
>>>> + * CONFIG_ARM_MVEBU_V7_CPUIDLE=y causes hard freezes every 1-8 
>>>> hours
>>> I don't think the dts is the right place for Linux issues.
>> Not sure if that's a hardware weirdness or software issue (yet).
>> Just checked - this goblin is there in 4.0-rc7.
> I understand the issue, but still the dts is not the right place
> for this comment.

Okay, got it.
I'll file a bug about this issue to the the bugzilla. However something
tells me it might not be cpuidle, but D-link. This one's sounds nasty
and it has been around since 3.16.x. How could it go unnoticed?
Unfortunately I have no other armada-370 hardware to test it.

> [...]
>>>> +                marvell,nand-keep-config;
>>>> +                marvell,nand-enable-arbiter;
>>>> +                nand-on-flash-bbt;
>>> Do you know the ECC scheme used?
>> Any hints on how to find it apart from dumping NAND controller 
>> registers
>> from bootloader ?
> From the original bootlog:
> armada-nand armada-nand.0: Initialize HAL based NFC in 8bit mode with
> DMA Disabled using BCH 4bit ECC
> that translates into
> nand-ecc-strength = <4>;
> nand-ecc-step-size = <512>;


> [...]
>>>> +                /* Hardwired into stock bootloader */
>>> I don't get the comment above.
>> The stock u-boot is hacked with a 'failsafe' kernel address.
> Ok, the above partition isn't passed by the bootloader on mtdparts
> cmdline, i.e. that is why you call it "hardwired" ?

As far I got - stock u-boot knows nothing about partition tables and
operates just on raw NAND offsets.

> Just remove the comment, actually the whole partition table is
> "hacked" into the stock bootloader.
>> If for some reason running the 'bootcmd' fails, it reads
>> 5MiBs from partition @ (5d00000 + 0x800) and tries to boot it.
>> There's no way to change this via environment, only by replacing
>> the bootloader.
>> Personally I'm more happy with a simpler partition table, but I
>> guess upstream should be oriented towards the stock bootloader.
> Yeah, leave the original partition table. Any other, smarter
> bootloader can replace it.
> [...]
>> Thanks for the review, I'll resubmit the fixed patchset shortly.
>> Please disregard my [PATCH v2] messages. I've send them the moment 
>> before
>> I noticed your email and review.
> Please always leave the Cc-list in place.

Sorry, I had to resend that email twice. First one to you, next to the 
and others. I'm quite new to LKML so still playing with proper email 

> And you should relax and leave patches there a day or two (or three).
> Not everybody is reading patches immediately.
> We are in no hurry, the current merge window is already closed,
> the new one is 6 weeks away.
> Sebastian

I only have a chance to play with the hardware at the weekend, since the
spare dns327l is at the country house, so I try to send fixes as soon as
get feedback while I can quickly test it.

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