linux-kernel - Re: [PATCH v2 0/7] Add TI EMIF SDRAM controller driver

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Message-ID: <4F624A8B.7040407@ti.com>
Date:	Fri, 16 Mar 2012 01:31:15 +0530
From:	Aneesh V <aneesh@...com>
To:	Greg KH <greg@...ah.com>
CC:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-omap@...r.kernel.org
Subject: Re: [PATCH v2 0/7] Add TI EMIF SDRAM controller driver

On Friday 16 March 2012 12:34 AM, Greg KH wrote:
> On Thu, Mar 15, 2012 at 11:47:30PM +0530, Aneesh V wrote:
>> Add a driver for the EMIF SDRAM controller used in TI SoCs
>>
>> EMIF is an SDRAM controller that supports, based on its revision,
>> one or more of LPDDR2/DDR2/DDR3 protocols.This driver adds support
>> for LPDDR2.
>>
>> The driver supports the following features:
>> - Calculates the DDR AC timing parameters to be set in EMIF
>>    registers using data from the device data-sheets and based
>>    on the DDR frequency. If data from data-sheets is not available
>>    default timing values from the JEDEC spec are used. These
>>    will be safe, but not necessarily optimal
>> - API for changing timings during DVFS or at boot-up
>
> Is this a kernel/user API, or just an in-kernel API?

That's just an in-kernel API or more precisely callbacks to be
registered for DDR frequency change events.

thanks,
Aneesh
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