linux-kernel - Re: [RFC PATCH] regulator: palmas: enable all modes for SMPS10

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Date:	Sun, 2 Jun 2013 00:33:10 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	Mark Brown <broonie@...nel.org>
CC:	Kishon Vijay Abraham I <kishon@...com>,
	"lgirdwood@...il.com" <lgirdwood@...il.com>,
	"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"gg@...mlogic.co.uk" <gg@...mlogic.co.uk>,
	"ian@...mlogic.co.uk" <ian@...mlogic.co.uk>,
	"balbi@...com" <balbi@...com>
Subject: Re: [RFC PATCH] regulator: palmas: enable all modes for SMPS10

On Sunday 02 June 2013 12:15 AM, Mark Brown wrote:
> * PGP Signed by an unknown key
>
> On Thu, May 30, 2013 at 06:30:32PM +0530, Laxman Dewangan wrote:
>
>> Palma have SMPS10 regulator which can generate two voltage level
>> 3.75 and 5V.
>> This SMPS10 has the two outputs OUT1 and OUT2 and having one input IN1.
>> SMPS10-OUT2 is always connected to SMPS10-IN1 via following logic:
>> - Through parasitic diode (no sw control)
>> - In bypass mode (bit  configuration is there to enable/disable Bypass)
>> - In Boost mode (bit configuration is there to enable/disable Boost mode)
>> SMPS10-OUT1 is connected to the SMPS10-OUT2 pin through Switch (SW
>> control for enabling/disabling this switch).
>> So I think:
>> regualtor enable/disable, we should toggle the bit for SWITCH.
>> In STANDBY mode, it should be BYPASS disable and Boost disable.
>> In Idle/Normal mode, BYPASS enable and Boost disable.
>> In Fast mode, it should be bypass disable and Boost enable.
> No, that makes no sense at all to me.  Why do you think this maps onto
> the set mode API?  Modes are all about accuracy of regulation.

I mapped this to the regulation under different load, Fast mode is in 
heavy load and so boost enable, normal/idle mode for normal load and so 
bypass.


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