From: "Floris Lambrechts" <florisla@gmail.com>
To: linuxppc-embedded@ozlabs.org
Subject: PCF8563 realtime clock does not initialize
Date: Mon, 23 Apr 2007 13:38:26 +0200 [thread overview]
Message-ID: <576210b90704230438h168e15a7q5fc309d791db52b6@mail.gmail.com> (raw)
Hi all,
I have a custom board with an ppc8540 cpu. I'm using a vanilla Linux
kernel 2.6.20.3.
The RTC chip is a PCF8563, connected to 8540's i2c controller at
address 0x51. In u-boot the clock works fine ('date' command) so the
hardware is alright.
In Linux however, I get this at boot:
(...)
i2c /dev entries driver
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
(...)
I have compiled in the PCF8563 rtc driver (not as module), and have
support for RTC class, /dev, /proc and /sys. However, the entries in
/proc and /sys relevant to the RTC remain empty.
I have created a device node /dev/rtc0 with major/minor 254, 0 (254
being what is listed as rtc in /proc/devices).
For some reason, PCF8563 driver does not initialize correctly. I'm
looking for a hint where to look for finding the cause of this...
Some further info:
ARCH=ppc, CROSS_COMPILE=ppc_85xx- (from ELDK 4), boot loader is u-boot 1.2.0.
Thansk for any help.
Regards
Floris
reply other threads:[~2007-04-23 11:38 UTC|newest]
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