linux-kernel - tqm8315 + ds1337: problems

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Date:	Sat, 21 Mar 2015 21:09:57 +0100
From:	Pavel Machek <pavel@....cz>
To:	kernel list <linux-kernel@...r.kernel.org>,
	Sergey.Gerasimov@...rosoft-development.com, o.weber@...eware.de,
	a.zummo@...ertech.it, rtc-linux@...glegroups.com, tomas@...otny.cz,
	matti.vaittinen@....com, s.trumtrar@...gutronix.de
Subject: tqm8315 + ds1337: problems

Hi!

Something is wrong with real time clock on tqm8315 board... or maybe
with i2c on board, as I have trouble reading same information from
u-boot using "i2c md" commands:

Does rtc work for you on tqm8315? Any ideas how to debug this further?

Thanks,
								Pavel

[    1.480289] i2c /dev entries driver
[    1.484371] mpc-i2c e0003000.i2c: initializing
[    1.489119] mpc-i2c e0003000.i2c: clock 378787 Hz (dfsrr=6 fdr=1)
[    1.495330] mpc-i2c e0003000.i2c: timeout 1000000 us
[    1.501640] mpc-i2c e0003000.i2c: Doing write 1 bytes to 0x68 - 1
of 2 messa
ges
[    1.512126] mpc-i2c e0003000.i2c: Doing read 2 bytes to 0x68 - 2 of
2 messag
es
[    1.519696] mpc-i2c e0003000.i2c: Doing write 2 bytes to 0x68 - 1
of 1 messa
ges
[    1.527413] mpc-i2c e0003000.i2c: Doing write 1 bytes to 0x68 - 1
of 2 messa
ges
[    1.534959] mpc-i2c e0003000.i2c: Doing read 8 bytes to 0x68 - 2 of
2 messag
es
[    1.542951] mpc-i2c e0003000.i2c: Doing write 1 bytes to 0x68 - 1
of 2 messa
ges
[    1.550552] mpc-i2c e0003000.i2c: Doing read 7 bytes to 0x68 - 2 of
2 messag
es
[    1.558329] rtc-ds1307 0-0068: read: 07 39 00 06 00 81 01
[    1.563868] rtc-ds1307 0-0068: read secs=7, mins=39, hours=0,
mday=0, mon=0,
 year=101, wday=5
 [    1.572493] rtc (null): read_time: fail to read
 [    1.577664] rtc-ds1307 0-0068: rtc core: registered ds1337 as rtc0
[    1.584476] at24 0-0057: 32768 byte 24c256 EEPROM, writable, 64
bytes/write
[    1.592483] mpc-i2c e0003000.i2c: Doing write 1 bytes to 0x48 - 1
of 2 messa
ges
[    1.602493] mpc-i2c e0003000.i2c: Doing read 1 bytes to 0x48 - 2 of
2 messag
es
[    1.610538] lm75 0-0048: hwmon0: sensor 'lm75'
[    1.615870] TCP: cubic registered
[    1.619331] NET: Registered protocol family 17
[    1.624127] Key type dns_resolver registered
[    1.633413] mpc-i2c e0003000.i2c: Doing write 1 bytes to 0x68 - 1
of 2 messa
ges
[    1.641012] mpc-i2c e0003000.i2c: Doing read 7 bytes to 0x68 - 2 of
2 messag
es
[    1.648787] rtc-ds1307 0-0068: read: 07 39 00 06 00 81 01
[    1.654305] rtc-ds1307 0-0068: read secs=7, mins=39, hours=0,
mday=0, mon=0,
 year=101, wday=5
 [    1.662921] rtc rtc0: read_time: fail to read
 [    1.667375] rtc-ds1307 0-0068: hctosys: unable to read the
 hardware clock
 [    1.739679] gianfar: not advertising gigabit
 [    1.851232] ata2: No Device OR PHYRDY change,Hstatus = 0xa0000000
 [    1.857466] ata2: SATA link down (SStatus 0 SControl 300)
 [    1.863072] ata1: Signature Update detected @ 508 msecs
 [    2.039242] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
 

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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