linux-kernel - RE: [PATCH V1] ARM: tegra: Pause DMA when reading transfer count

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Message-ID: <74CDBE0F657A3D45AFBB94109FB122FF177EE3A77E@HQMAIL01.nvidia.com>
Date:	Wed, 11 Jan 2012 12:48:26 -0800
From:	Stephen Warren <swarren@...dia.com>
To:	Laxman Dewangan <ldewangan.com@...dia.com>,
	"ccross@...roid.com" <ccross@...roid.com>,
	"olof@...om.net" <olof@...om.net>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>
CC:	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Laxman Dewangan <ldewangan@...dia.com>
Subject: RE: [PATCH V1] ARM: tegra: Pause DMA when reading transfer count

Laxman Dewangan wrote at Monday, January 09, 2012 11:05 PM:
> In order to read an accurate channel transfer count
> from the APB DMA engine, the DMA controller must be
> paused first.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>

Acked-by: Stephen Warren <swarren@...dia.com>
Tested-by: Stephen Warren <swarren@...dia.com>

(Audio playback on Harmony booted using device tree works fine in my
brief testing)

-- 
nvpublic


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