Re: [PATCH 1/4] mfd: mc13xxx: Honor designed SPI mode

[Alexander Shiyan]

Понедельник,  3 марта 2014, 10:41 +01:00 от Sascha Hauer <s.hauer at pengutronix.de>:
> On Sun, Mar 02, 2014 at 11:44:32AM +0400, Alexander Shiyan wrote:
> > Instead of using hard coded SPI mode, use mode described in
> > devicetree or defined for the board.
> > Additionally, patch updates all users of this PMIC to use
> > correct SPI mode.
> 
> What's the reason for this change? Without it the driver just does the
> correct thing, this only adds a chance for boards do get it wrong. This
> for example happens with the i.MX27 phyCORE in this patch, see
> happens with arch/arm/boot/dts/imx27-phytec-phycore-som.dts whih doesn't
> have the spi-cs-high property.

How specify proper functionality if chipselect connected through inverter?

For i.MX27 phyCORE:
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/arch/arm/boot/dts/imx27-phytec-phycore-som.dtsi?id=986cc4920412d8a7b5c9dba85601651f6373f45e

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