linux-kernel - Re: [PATCH 0/5] mmc: host: omap

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Message-ID: <20140424143931.GE26661@saruman.home>
Date:	Thu, 24 Apr 2014 09:39:31 -0500
From:	Felipe Balbi <balbi@...com>
To:	Balaji T K <balajitk@...com>
CC:	Felipe Balbi <balbi@...com>, <chris@...ntf.net>,
	<ulf.hansson@...aro.org>, <linux-mmc@...r.kernel.org>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/5] mmc: host: omap_hsmmc: a few improvements

On Thu, Apr 24, 2014 at 08:01:19PM +0530, Balaji T K wrote:
> On Thursday 27 March 2014 05:34 AM, Felipe Balbi wrote:
> >Hi,
> >
> >this series lets us access the newer registers introduced
> >back in OMAP4 which give us some valid information about
> >the OMAP HSMMC IP like max block size, support for ADMA,
> >support for Retention.
> 
> "Support for Retention" looks interesting, can you shed more lights on
> it

HWINFO has a bit (bit 6) which tells you whether retention is supported,
it's in all TRMs since OMAP3630 or so.

"6	RERETMODE		Retention mode generic parameter
				This bit field indicates whether the
				retention mode is supported using the
				pin PIRFFRET.

				0x0: Retention mode disabled
				0x1: Retention mode enabled"

-- 
balbi

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