[U-Boot] [PATCH] ARM: S3C64XX: fix clock setup

Minkyu Kang promsoft at gmail.com
Mon Nov 22 09:48:03 CET 2010


Dear Darius Augulis,

On 19 November 2010 17:54, Darius Augulis <augulis.darius at gmail.com> wrote:
> Hi,
>
> On Fri, Nov 19, 2010 at 10:32 AM, Minkyu Kang <promsoft at gmail.com> wrote:
>> Dear Darius Augulis,
>>
>> On 13 November 2010 03:05, Darius Augulis <augulis.darius at gmail.com> wrote:
>>> Fix pll divider values to standard ones described
>>> in "S3C6410X RISC Microprocessor User's Manual,
>>> Revision 1.20", p. 3-21.
>>>
>>> Signed-off-by: Darius Augulis <augulis.darius at gmail.com>
>>> ---
>>>  arch/arm/include/asm/arch-s3c64xx/s3c6400.h |   17 ++++++-----------
>>>  1 files changed, 6 insertions(+), 11 deletions(-)
>>>
>>
>> Hm, no..
>> Please consider s3c6400.
>> Those values are fit with s3c6400.
>
> does s3c6400 have different clock controller compared to s3c6410?
> I have only old manual of s3c6400 and it has the same equation for pll
> clock setting.
> Please take a look into arch/arm/cpu/arm1176/s3c64xx/speed.c. There
> are common functions for both CPU's and
> they work ok. So i guess my patch should not break s3c6400 operation.

According to the TRM...
Equations are same. but, recommended values are different.
Your patch is no guarantee with s3c6400.
Did you tested with s3c6400?

> Btw, we don't have any working s3c6400 board in main line and it seems
> nobody is interested to have one.

We have the SMDK6400.

Thanks
Minkyu Kang
-- 
from. prom.
www.promsoft.net


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