Hi Ben, Sorry for bumping that old thread out of the ash :)
On 11.02.2011 15:34, Ben Gardiner wrote: > Hi Sudhakar, > > On Fri, Feb 11, 2011 at 6:03 AM, Rajashekhara, Sudhakar > <sudhakar....@ti.com> wrote: >> When I enable the "gpio-keys" driver I am getting the below error message >> when kernel is booting: >> >> "gpio-keys gpio-keys.0: Unable to get irq number for GPIO 152, error -6" > > This error looks familiar to me; please excuse me if I presume too much. > > It looks like you may be trying to use the gpio-keys driver on an i2c > expander. This driver requires interrupt-capable GPIOs and i2c > expander GPIOs are not interrupt capable -- yet. The support needed > for chained interrupts is being developed by Lennert Buytenhek as part > of the ARM device tree support [1]. Do you know if that has been implemented since then ? I have not found anything about that subject. > To reproduce Chritophe's problem, try using the L138's GPIOs directly > in a gpio-keys driver instance. > > Best Regards, > Ben Gardiner > > [1] http://article.gmane.org/gmane.linux.drivers.devicetree/4261 > > --- > Nanometrics Inc. > http://www.nanometrics.ca Thank you, -- Christophe Aeschlimann Embedded Software Engineer & IT Manager ACN Advanced Communications Networks S.A. Rue du Puits-Godet 8a 2000 Neuchâtel, Switzerland Tél. +41 32 724 74 31 c.aeschlim...@acn-group.ch _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
