[ I sent a few private messages to Kim, but I'll sumarize my problem here ]
Hi all,
I have AT91SAM9260-based board, kernel is 2.6.26.3. M41T94 is
connected on SPI channel 1, chip select 0. I've applied Kim's patch
and added SPI device in board-sam9260ek.c:
#if defined(CONFIG_RTC_DRV_M41T94) || defined(CONFIG_RTC_DRV_M41T94_MODULE)
{ /* External RTC */
.modalias = "rtc-m41t94",
.chip_select = 0,
.max_speed_hz = 2 * 1000 * 1000,
.bus_num = 1,
},
#endif
During booting up everything seems fine (M41T94 is found etc), but it
is not working. Here is some output:
rtc-m41t94: dev (254:0)
rtc-m41t94 spi1.0: rtc core: registered rtc-m41t94 as rtc0
rtc-m41t94 spi1.0: read secs=0, mins=0, hours=0, mday=0, mon=-1,
year=100, wday=-1
rtc-m41t94 spi1.0: hctosys: unable to read the hardware clock
[..]
# hwclock -r;dmesg
hwclock: RTC_RD_TIME: Invalid argument
rtc-m41t94 spi1.0: read secs=0, mins=0, hours=0, mday=0, mon=-1,
year=100, wday=-1
#hwclock -w;dmesg
rtc-m41t94 spi1.0: write secs=15, mins=0, hours=0, mday=1, mon=0,
year=70, wday=4
I've tried both SPIMODE0 and SPIMODE3 (according to m41t94 datasheet)
but no improvements.
Thanks
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