linux-kernel - Re: [PATCH RFC 1/1] ASoC: fsl_ssi: Make fifo watermark and maxburst settings device tree options

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Message-ID: <20160115192320.GA12418@Asurada-Nvidia>
Date:	Fri, 15 Jan 2016 11:23:21 -0800
From:	Nicolin Chen <nicoleotsuka@...il.com>
To:	Caleb Crome <caleb@...me.org>
Cc:	Timur Tabi <timur@...i.org>, Mark Brown <broonie@...nel.org>,
	Xiubo Li <Xiubo.Lee@...il.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>
Subject: Re: [PATCH RFC 1/1] ASoC: fsl_ssi: Make fifo watermark and maxburst
 settings device tree options

On Fri, Jan 15, 2016 at 11:10:29AM -0800, Caleb Crome wrote:
 
> Shall I submit a patch that sets the value to 4 for for any/all of the
> above?  Should it be different based on whether fiq is enabled.  Maybe
> set it to 4 for whenever DMA is used, and to 13 whenever FIQ is used?

A possible solution:
Use the original settings (depth - 2) as a common configuration
in the main probe() and overwrite it in the fsl_ssi_imx_probe()
if detecting a use_dma flag.