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From: Pierre Aubert <p.aubert@staubli.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] ARM: arch-mx6: fix PLL2_PFD2_FREQ
Date: Fri, 20 Sep 2013 07:32:46 -0700 (PDT)	[thread overview]
Message-ID: <1379687566495-163654.post@n7.nabble.com> (raw)
In-Reply-To: <523C534C.70309@denx.de>

Stefano Babic wrote
> On 11/09/2013 15:30, Markus Niebel wrote:
>> From: Markus Niebel &lt;

> Markus.Niebel@

> &gt;
>> 
>> according to the manual frequency of PLL2 PFD2 is 396.000.000
>> instead of 400.000.000
>> 
>> Signed-off-by: Markus Niebel &lt;

> Markus.Niebel@

> &gt;
>> ---
>>  arch/arm/include/asm/arch-mx6/crm_regs.h |    2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>> 
>> diff --git a/arch/arm/include/asm/arch-mx6/crm_regs.h
>> b/arch/arm/include/asm/arch-mx6/crm_regs.h
>> index 74aefe6..2813593 100644
>> --- a/arch/arm/include/asm/arch-mx6/crm_regs.h
>> +++ b/arch/arm/include/asm/arch-mx6/crm_regs.h
>> @@ -892,7 +892,7 @@ struct mxc_ccm_reg {
>>  
>>  #define PLL2_PFD0_FREQ		352000000
>>  #define PLL2_PFD1_FREQ		594000000
>> -#define PLL2_PFD2_FREQ		400000000
>> +#define PLL2_PFD2_FREQ		396000000
>>  #define PLL2_PFD2_DIV_FREQ	200000000
>>  #define PLL3_PFD0_FREQ		720000000
>>  #define PLL3_PFD1_FREQ		540000000
>> 
> 
> Acked-by: Stefano Babic &lt;

> sbabic@

> &gt;

Hello Markus, Hello Stephano
I think it's better to compute  this frequencies rather than hard coding
values. The default PFD frequencies are not the same for the Quad and for
the other Socs.
Furthermore, if you modify PLL2_PFD2_FREQ, you must also change
PLL2_PFD2_DIV_FREQ.

Please, see the patch I've submitted yesterday ([PATCH V2] mx6: compute PLL
PFD frequencies rather than using defines)

Best regards




--
View this message in context: http://u-boot.10912.n7.nabble.com/PATCH-ARM-arch-mx6-fix-PLL2-PFD2-FREQ-tp162976p163654.html
Sent from the U-Boot mailing list archive at Nabble.com.

  reply	other threads:[~2013-09-20 14:32 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-11 13:30 [U-Boot] [PATCH] ARM: arch-mx6: fix PLL2_PFD2_FREQ Markus Niebel
2013-09-11 13:30 ` [U-Boot] [PATCH] ARM: i.MX6: add i.MX6D to detected variants Markus Niebel
2013-09-20 13:53 ` [U-Boot] [PATCH] ARM: arch-mx6: fix PLL2_PFD2_FREQ Stefano Babic
2013-09-20 14:32   ` Pierre Aubert [this message]
2013-09-25  7:24     ` Markus Niebel
2013-09-25  7:38       ` Pierre AUBERT
2013-10-10 15:09     ` Stefano Babic
2013-09-20 16:02 ` Stefano Babic

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