linux-kernel - Re: [PATCH 1/3] spi: add xtfpga SPI controller driver

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Date:	Wed, 12 Mar 2014 05:48:16 +0400
From:	Max Filippov <jcmvbkbc@...il.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	"linux-xtensa@...ux-xtensa.org" <linux-xtensa@...ux-xtensa.org>,
	linux-spi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Chris Zankel <chris@...kel.net>,
	Marc Gauthier <marc@...ence.com>,
	Rob Herring <robh+dt@...nel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 1/3] spi: add xtfpga SPI controller driver

On Wed, Mar 12, 2014 at 5:11 AM, Mark Brown <broonie@...nel.org> wrote:
> On Wed, Mar 12, 2014 at 04:59:47AM +0400, Max Filippov wrote:
>
>> And tlv320aic23 has the following regmap:
>
>> const struct regmap_config tlv320aic23_regmap = {
>>         .reg_bits = 7,
>>         .val_bits = 9,
>
>> and its SPI interface accordingly does the following in .probe:
>
>>         spi->bits_per_word = 16
>>         spi->mode = SPI_MODE_0;
>>         ret = spi_setup(spi);
>
> So I just looked again - the SPI code isn't in mainline, there must
> be some out of tree patches here that can't have been tested since the
> driver was converted to regmap (or the byte swapping you're doing in the
> controller is buggy for 16 bits per word).

I'm successfully running this driver with the patches in your ASoC tree
branch topic/tlv320aic23.

-- 
Thanks.
-- Max
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