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From: Stefano Babic <sbabic@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/3] misc:pmic: Support for voltage to register value conversion function
Date: Wed, 28 Mar 2012 13:41:38 +0200	[thread overview]
Message-ID: <4F72F8F2.3070109@denx.de> (raw)
In-Reply-To: <20120328132606.7537d9c6@lmajewski.digital.local>

On 28/03/2012 13:26, Lukasz Majewski wrote:

Hi Lukasz,
>>
>>>  
>>> +int pmic_vol_to_reg(struct pmic *p, int uV)
>>
>> You added a new entry point to pmic, but you do not use it...I have
>> not found in your patchset why it is necessary for you.
>>
> 
> Rationale for this change is in commits following this one.
> For trats Samsung target it is necessary to change the default voltage.

Yes, I was expecting that you call pmic_vol_to_reg() in your following
patches, but I cannot find it. Am I missing something ?

> 
> I think, that providing access to such a function as a pointer is the
> best possible solution.
> 
> For example the MAX8997 and MAX8998 PMICs have different way of
> calculating the value, which represents the LDO output value.
> 
> 
>> I am not sure if we require to add this to the PMIC API or hide in the
>> pmic specific code. Other PMICs has not a a register for different
>> voltages, but only a bit inside the same register (this is the case
>> for the Freescale's PMICs we currently support in u-boot).
> 
> I think, that it is easier to define function pointer in the pmic
> structure, than separate functions and handling them in target platform
> data.

Ok, understood.

Best regards,
Stefano Babic

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  reply	other threads:[~2012-03-28 11:41 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-28  8:45 [U-Boot] [PATCH 1/3] misc:pmic: Support for voltage to register value conversion function Lukasz Majewski
2012-03-28  8:45 ` [U-Boot] [PATCH 2/3] misc:pmic:max8997 MAX8997 support for PMIC driver Lukasz Majewski
2012-03-28  8:45 ` [U-Boot] [PATCH 3/3] misc:pmic:samsung Convert TRATS target to use MAX8997 instead of MAX8998 Lukasz Majewski
2012-03-28 10:19   ` Minkyu Kang
2012-03-28 10:26 ` [U-Boot] [PATCH 1/3] misc:pmic: Support for voltage to register value conversion function Stefano Babic
2012-03-28 11:26   ` Lukasz Majewski
2012-03-28 11:41     ` Stefano Babic [this message]
     [not found]       ` <20120328143820.44ca652c@lmajewski.digital.local>
2012-03-28 12:50         ` Stefano Babic
2012-03-28 13:13           ` Lukasz Majewski
2012-03-28 14:43             ` Stefano Babic
2012-03-29  7:39               ` Lukasz Majewski

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