From: "Yazdani, Reyhaneh" <RYazdani@data-modul.com>
To: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: "barebox@lists.infradead.org" <barebox@lists.infradead.org>
Subject: Re: Bringup Barebox on imx8mm
Date: Tue, 25 Jun 2019 09:12:44 +0000 [thread overview]
Message-ID: <c5d05019-b85c-fef8-0097-448da9ebe5bb@data-modul.com> (raw)
In-Reply-To: <CAHQ1cqHAz=ZAbUvThUOo8WcB74CgnoWdSgAEOTy_94TE81zwfQ@mail.gmail.com>
Hello,
The issue is resolved. It was related to the DDR clock init. It was necessary to
initialize the DDR clock before starting ddr_init():
/* DDR clock init*/
writel( 0x3, 0x30384058);
writel(0x11000000, 0x3038a000);
writel(0x11000000,0x3038a080);
writel(0x3, 0x30384054);
Best,
Reyhaneh
On 6/14/19 9:11 AM, Andrey Smirnov wrote:
> On Thu, Jun 13, 2019 at 8:14 AM Yazdani, Reyhaneh
> <RYazdani@data-modul.com> wrote:
>>
>> Hello Everyone,
>>
>> I am trying to bringup Barebox on i.MX8MM-evk.
>>
>> I have followed all the commits related to the i.MX8MQ and added proper files
>> and changes for i.MX8MM-evk board.
>>
>> The problem is Barebox stops at "ddrc_phy_wait_training_complete" function,
>> exactly at sub-function "ddrc_phy_get_message". The read-value from the
>>
>> phy + DDRC_PHY_REG(0xd0004) is not correct, and it remains in while loop.
>>
>> I used the ddr_init and ddrphy_train files produced from mscale_ddr_tool of NXP,
>> and even compared with the value from U-boot. All are similar.
>>
>> Does any body have an idea what would be the problem?
>>
>
> What about DDR PHY firmware? Is it the same as in working U-boot
> image? From what you describe it sounds that DDR PHY is not
> responding, so I am wondering if DDR firmware is running. Also, did
> you check that various memory offsets in, say
> arch/arm/mach-imx/include/mach/imx8-ddrc.h are valid for i.MX8MM and
> are not values that MQ specific? Another thing to debug this would be
> to trace all of the register reads/writes in working U-Boot vs Barebox
> and see what the difference is.
>
> Anyway, just my 2 cents.
>
> Thanks,
> Andrey Smirnov
>
--
Reyhaneh Yazdani
Data Modul AG TEL: +49-89-56017-154
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prev parent reply other threads:[~2019-06-25 9:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-13 15:14 Yazdani, Reyhaneh
2019-06-14 7:11 ` Andrey Smirnov
2019-06-17 8:17 ` Yazdani, Reyhaneh
2019-06-25 9:12 ` Yazdani, Reyhaneh [this message]
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