Re: [PATCH -mm][POWERPC] mpc8xxx : allow SPI without cs.

On Jun 18, 2009, at 8:09 AM, Anton Vorontsov wrote:

On Thu, Jun 18, 2009 at 08:19:44AM +0200, Rini van Zetten wrote:

quoted

This patch adds the possibility to have a spi device without a cs.

For example, the dts file should look something like this:

spi-controller {
      gpios = <&pio1 1 0      /* cs0 */
               0              /* cs1, no GPIO */
               &pio2 2 0>;    /* cs2 */

Interesting scheme. I guess this is for eSPI controllers that can
do their own chip-selects, but we want GPIO chip selects in addition
(or in place of built-in ones), correct?

That is a good question.  What HW is this for (I don't think its for  
eSPI but I could be wrong).

- k