Messages in this thread | | | Date | Fri, 16 May 2008 17:25:28 -0400 | From | "Jon Smirl" <> | Subject | Re: [RFC PATCH 0/4] Describe SPI devices in the OF device tree and add mpc5200-spi driver |
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On 5/16/08, Grant Likely <grant.likely@secretlab.ca> wrote: > On Fri, May 16, 2008 at 2:27 PM, Jon Smirl <jonsmirl@gmail.com> wrote: > > On 5/16/08, Grant Likely <grant.likely@secretlab.ca> wrote: > >> This series is a set of changes to allow the slaves on an SPI bus to be > >> described in the OF device tree (useful in arch/powerpc) and adds a driver > >> that uses it (the Freescale MPC5200 SoC's SPI device). > > > > Right now we have SPI hooked up to PSC3. Hardware engineer is gone but > > I'll see if I can get him to alter things to use the SPI controller. I > > have an old mail from him where he thinks the Phytec board is missing > > a signal needed to use the SPI controller. > > > While I'd appreciate the testing, I suspect that you really don't want > to do that. The dedicated SPI controller isn't very good. It only > does a byte at a time and so is rather slow. A PSC is SPI mode should > be better (but I haven't tried it personally it yet).
What is the device tree node for PSC3 supposed to look like when it has both serial and spi enabled?
-- Jon Smirl jonsmirl@gmail.com
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