Hi, there! (Only subscribed to linuxppc-embedded and lkml; otherwise, please CC)
Well, as already mentioned, I have problems to get my DS1337 RTC on I2C on my MPC8540(ads like) PowerPC working properly on latest 2.6.24-rc2-ge6a5c27f kernels. A paulus.git 2.6.21-rc5-g9a5ee4cc as well as a 2.6.22-rc6-gb75ae860 is working fine. (mainstream's console is broken, so cannot test these, yet.) My guess is that the new rtc-lib's RTC_DRV_DS1307 support is still broken and it also breaks the deprecated SENSORS_DS1337. :-( Before I start bisecting and digging in the code (I'm booting from flash, so it isn't fun to change kernels on the fly), I just want to verify that my configuration is correct. I am using hwclock-2.31 from Bryan Henderson since the one which comes with util-linux doesn't support to choose another rtc device than /dev/rtc. Here is a snippet from my .config which is similar among my kernels. CONFIG_GEN_RTC=y CONFIG_I2C=y CONFIG_I2C_CHARDEV=y CONFIG_I2C_MPC=y CONFIG_SENSORS_DS1337=y CONFIG_SENSORS_DS1374=y CONFIG_SENSORS_EEPROM=y CONFIG_SENSORS_M41T00=y CONFIG_HWMON=y CONFIG_RTC_CLASS=y CONFIG_RTC_DEBUG=y CONFIG_RTC_DRV_DS1307=y CONFIG_RTC_DRV_PCF8563=y CONFIG_RTC_DRV_TEST=m CONFIG_RTC_HCTOSYS=y CONFIG_RTC_HCTOSYS_DEVICE="rtc0" CONFIG_RTC_INTF_DEV=y CONFIG_RTC_INTF_DEV_UIE_EMUL=y CONFIG_RTC_INTF_PROC=y CONFIG_RTC_INTF_SYSFS=y CONFIG_RTC_LIB=y So, I enabled both, the new rtc-lib DS1307 (which is compatible to the DS1337) and the deprecated SENSORS_DS1337. Deselecting SENSORS_* doesn't help. My /etc/udev/rules.d/50-udev-default.rules contains the line: KERNEL=="rtc[0-9]*", MODE="0666" When the RTC is working, I get the following: dmesg: ------ i2c /dev entries driver ds1307 0-0068: rtc core: registered ds1307 as rtc0 ds1307 0-0068: setting the system clock to 2007-11-28 18:56:33 (1196276193) and I get: [EMAIL PROTECTED]:/dev$ l rtc* crw-r--r-- 1 root root 10, 135 Jan 1 2000 rtc crw-rw---- 1 root root 239, 0 Jan 1 2000 rtc0 (Jan 1 2000 is the default date when the rtc chip was powered down, so the rtc was read successfully.) $hwclock --systohc --rtc /dev/rtc0 is working properly... When it's NOT working (2.6.24-rc2-git with some debugging enabled) I get: dmesg: ------ i2c /dev entries driver device class 'i2c-dev': registering bus i2c: add driver dev_driver bus platform: add driver fsl-i2c platform: Matched Device fsl-i2c.0 with Driver fsl-i2c platform: Probing driver fsl-i2c with device fsl-i2c.0 DEV: registering device: ID = 'i2c-0' DEV: registering device: ID = 'i2c-0' bound device 'fsl-i2c.0' to driver 'fsl-i2c' platform: Bound Device fsl-i2c.0 to Driver fsl-i2c bus i2c: add driver ds1337 DEV: registering device: ID = '0-0068' bus i2c: add device 0-0068 bound device '0-0068' to driver 'ds1337' bus i2c: add driver lm75 DEV: registering device: ID = '0-0048' bus i2c: add device 0-0048 bound device '0-0048' to driver 'lm75' DEV: registering device: ID = 'hwmon0' bus i2c: add driver max6650 $ ls /dev/rt* crw-r--r-- 1 root root 10, 135 Jan 1 1970 rtc and $ cat /proc/driver/rtc rtc_time : 00:00:570426440 rtc_date : 269131772-01-00 rtc_epoch : 1900 alarm : 00:00:00 DST_enable : no BCD : yes 24hr : yes square_wave : no alarm_IRQ : no update_IRQ : no periodic_IRQ : no periodic_freq : 0 batt_status : okay shows up but these values never seem to get an update. (==stable among reboots) :-( My /etc/udev/50-udev-default.rules contains KERNEL=="rtc", MODE="0644" Any ideas to debug? -- Clemens Koller __________________________________ R&D Imaging Devices Anagramm GmbH Rupert-Mayer-Straße 45/1 Linhof Werksgelände D-81379 München Tel.089-741518-50 Fax 089-741518-19 http://www.anagramm-technology.com _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded