Chipselect in SPI binding with mpc5200-psc-spi
kari.davidsson at marel.com
Tue Jun 16 20:41:02 EST 2009
Now my driver gets probed.
This "modalias" error was due to wrong "compatible" attribute of
my of node.
But I still need to have the call to of_register_spi_devices().
The attached patch shows what I mean.
Grant Likely wrote:
> On Mon, Jun 15, 2009 at 10:36 AM, Kári
> Davíðsson<kari.davidsson at marel.com> wrote:
>> Is this true?
>> Grant Likely wrote:
>>> Yes, this is right. The psc_spi driver automatically registers all
>>> spi children that it finds in the device tree onto the SPI bus.
>>> Therefore registering an spi_driver() is the right thing to do.
>> I am writing an SPI protocol driver and I find that my driver
>> is never probed.
>> I tried to add and call to of_register_spi_devices() in the
>> drivers/spi/mpc52xx_psc_spi.c::mpc52xx_psc_spi_of_probe() function,
>> without much effect besided that the DTS node is parsed but the driver probe
>> is not called, actually it complains about a modalias for my node is
> What do you see when you look in /sys/bus/spi/devices? You should see
> a directory for your device. What do you see in /sys/bus/spi/drivers?
> In here you should see your driver. If they are both there, then you
> just have a problem matching your driver name to the device name.
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
More information about the Linuxppc-dev