linux-kernel - Re: [PATCH] SPI: spi-pxa2xx: SPI support for Intel Quark X1000

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Date:	Fri, 26 Sep 2014 17:22:37 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	Weike Chen <alvin.chen@...el.com>,
	Eric Miao <eric.y.miao@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Mika Westerberg <mika.westerberg@...el.com>,
	Hock Leong Kweh <hock.leong.kweh@...el.com>,
	Boon Leong Ong <boon.leong.ong@...el.com>,
	Raymond Tan <raymond.tan@...el.com>
Subject: Re: [PATCH] SPI: spi-pxa2xx: SPI support for Intel Quark X1000

On Fri, 2014-09-26 at 11:08 +0100, Mark Brown wrote:
> On Fri, Sep 26, 2014 at 10:25:49AM -0700, Weike Chen wrote:

[]

>   It might also be helpful for review to have two
> patches, one splitting things out into the functions and another adding
> the Quark support.

I also suggest to go this way.

> 
> > +/*  see Quark SPI data sheet for implementation rationale */
> > +static u32 quark_x1000_set_clk_regvals(u32 rate, u32 *dds, u32 *clk_div)
> > +{
> 
> Please document this in the driver - I don't know if this datasheet is
> public but even if it is it may not stay that way.

Datasheet is public.
I'm just wondering if we can use just a formula instead of table.

-- 
Andy Shevchenko <andriy.shevchenko@...el.com>
Intel Finland Oy

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