U-Boot warnings on Nokia N900
Hello,
when starting U-Boot (from git master) on Nokia N900 it show lot of these lines on N900 screen:
Timed out in wait_for_event: status=0000
Check if pads/pull-ups of bus 1 are properly configured Timed out in wait_for_event: status=0000
Check if pads/pull-ups of bus 1 are properly configured
...i2c_read (addr phase): pads on bus 1 probably not configured (status=0x10)i2c_write: timeout writing last byte!
But booting linux kernel working without problem. What above warning messages means? They were not in U-Boot 2013.04 version.
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Quoted 14 lines · On Thursday 15 January 2015 10:07:05 Pali Roh?r wrote:
Hello,
when starting U-Boot (from git master) on Nokia N900 it show lot of these lines on N900 screen:
Timed out in
wait_for_event: status=0000
Check if pads/pull-ups of bus 1 are properly configured Timed out inwait_for_event: status=0000
Check if pads/pull-ups of bus 1 are properly configured
...i2c_read(addr phase): pads on bus 1 probably not configured (status=0x10)i2c_write: timeout writing last byte!
Quoted 3 lines
But booting linux kernel working without problem. What above warning messages means? They were not in U-Boot 2013.04 version.
Ok, these warning/error lines are generated by this code:
/* reset lp5523 led */ i2c_set_bus_num(1); state = 0xff; i2c_write(0x32, 0x3d, 1, &state, 1); i2c_set_bus_num(0);
in function misc_init_r() in file board/nokia/rx51/rx51.c
Above code worked fine in U-Boot 2013.04 and now in U-Boot from git master it generates warnings/errors. Why?
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Pali Roh?r pali.rohar at gmail.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: <http://lists.denx.de/pipermail/u-boot/attachments/20150115/bd4980ad/attachment.pgp>
Quoted 27 lines · Pali Roh?r
Quoted 14 lines · On Thursday 15 January 2015 10:07:05 Pali Roh?r wrote:
Hello,
when starting U-Boot (from git master) on Nokia N900 it show lot of these lines on N900 screen:
Timed out in
wait_for_event: status=0000
Check if pads/pull-ups of bus 1 are properly configured Timed out inwait_for_event: status=0000
Check if pads/pull-ups of bus 1 are properly configured
...i2c_read(addr phase): pads on bus 1 probably not configured (status=0x10)i2c_write: timeout writing last byte!Quoted 3 lines
But booting linux kernel working without problem. What above warning messages means? They were not in U-Boot 2013.04 version.
Ok, these warning/error lines are generated by this code:
/* reset lp5523 led */ i2c_set_bus_num(1); state = 0xff; i2c_write(0x32, 0x3d, 1, &state, 1); i2c_set_bus_num(0);
Quoted 4 lines
in function
misc_init_r()in fileboard/nokia/rx51/rx51.cAbove code worked fine in U-Boot 2013.04 and now in U-Boot from git master it generates warnings/errors. Why?
Sadly I think you'll have to git bisect to see just when things changed. This area of code is a bit finicky to say the least.
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