Thread (13 messages) flat view 13 messages, 6 authors, 2009-07-03

Re: [PATCH -mm v3][POWERPC] mpc8xxx : allow SPI without cs.

From: Rini van Zetten <hidden>
Date: 2009-06-19 11:16:19
Also in: linux-spi

On Jun 19, 2009, at 2:26 AM, 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 */

Signed-off-by: Rini van Zetten <redacted>
---
Changes :
    patch against 2.6.30-rc8-mm1
    style updates
    compiler warning fix
comment :
    This feature is needed on our home made board to program an 
onboard fpga.
    The fpga needs some special pin toggling to put it in programming 
mode.
    That's why we want to skip the usual gpio cs and do the pin toggling
    in our driver
    
Which FSL chip are you using?
We use the MPC8377E

Rini
- k

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-- 
Rini van Zetten
Senior Software Engineer

-------------------------
ARVOO Engineering B.V.
Tasveld 13
3417 XS Montfoort
The Netherlands

E-mail : <mailto:rini@arvoo.com> Rini van Zetten

Web : www.arvoo.com
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