Marc LeFevre schrieb: > I’m new to the list. Welcome! :-)
> I have an e500-based embedded Linux system running > a 2.6.22 kernel. I have a PCF8563T i2c based RTC chip attached to the > PPC i2c bus. In my kernel config file I have selected > CONFIG_RTC_INTF_DEV=y and CONFIG_RTC_DRV_PCF8563=y. I do a mknod for > /dev/rtc as c 10 135 (standard Linux) and link /dev/rtc0 to it. > > When I boot, get the following message: > > drivers/rtc/hctosys.c: unable to open rtc device (rtc0) 2.6.22.x and 2.6.23.x i2c rtc code was quite messy around PCF8563. > 3) Does the PPC have some quirks regarding i2c operation that are > at the root of this problem? The RTC subsystem was improved quite a bit lately. Try 2.6.24' powerpc architecture with a proper device tree instead. It works over here on mpc8540 / mpc8548 whereas the older ones were just a waste of time. Regards, Clemens _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded