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Today's Topics:
1. Openmoko Bug #2310: charging N900 with gta02 causes the gta02
to overheat (Openmoko Public Trac)
2. Re: Openmoko Bug #2310: charging N900 with gta02 causes the
gta02 to overheat (Openmoko Public Trac)
3. Re: Openmoko Bug #2310: charging N900 with gta02 causes the
gta02 to overheat (Openmoko Public Trac)
4. Re: Openmoko Bug #2310: charging N900 with gta02 causes the
gta02 to overheat (Openmoko Public Trac)
5. Re: Openmoko Bug #2310: charging N900 with gta02 causes the
gta02 to overheat (Openmoko Public Trac)
--- Begin Message ---
#2310: charging N900 with gta02 causes the gta02 to overheat
-----------------------------+----------------------------------------------
Reporter: lindi | Owner: openmoko-kernel
Type: defect | Status: new
Priority: normal | Milestone:
Component: System Software | Version: unspecified
Severity: normal | Keywords: battery pmu charging
Haspatch: 0 | Blockedby:
Estimated: | Patchreview:
Blocking: | Reproducible:
-----------------------------+----------------------------------------------
Steps to reproduce:
1) modprobe ochi-hcd
2) echo host > /sys/devices/platform/s3c-ohci/usb_mode
3) echo 1 > /sys/class/i2c-adapter/i2c-0/0-0073/neo1973-pm-host.0/hostmode
4) connect nokia N900 and openmoko with usb cable
Expected results:
4) N900 charges from openmoko
Actual results:
4) N900 charges from openmoko. However, the openmoko heats considerably up
and you notice the smell of burning components. The current_now sysfs node
shows a current of 2000 mA.
More info:
1)
Qi 9ef7754b8243457c
linux andy-tracking 9ecc089861ab238e
kernel cmdline: loglevel=4 console=tty0 console=ttySAC2,115200
init=/sbin/init ro mtdparts=physmap-
flash:-(nor);neo1973-nand:0x00040000(qi),0x00040000(depr-ub-
env),0x00800000(kernel),0x000a0000(depr),0x00040000(identity-
ext2),0x0f6a0000(rootfs) g_ether.host_addr=00:1F:11:01:1F:6B
g_ether.dev_addr=00:1F:11:01:1F:6B root=/dev/mmcblk0p1 rootdelay=1
rootdelay=1 panic=20 mem=127M root=/dev/mmcblk0p2 loglevel=8
distro: debian gnu/linux unstable
hardware revision: 24420350
gta02v5 with buzz fix
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/2310>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#2310: charging N900 with gta02 causes the gta02 to overheat
-----------------------------+----------------------------------------------
Reporter: lindi | Owner: openmoko-kernel
Type: defect | Status: new
Priority: normal | Milestone:
Component: System Software | Version: unspecified
Severity: normal | Keywords: battery pmu charging
Haspatch: 0 | Blockedby:
Estimated: | Patchreview:
Blocking: | Reproducible:
-----------------------------+----------------------------------------------
Comment(by lindi):
This was version 'F4 37-1' of N900.
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/2310#comment:1>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#2310: charging N900 with gta02 causes the gta02 to overheat
-----------------------------+----------------------------------------------
Reporter: lindi | Owner: openmoko-kernel
Type: defect | Status: new
Priority: normal | Milestone:
Component: System Software | Version: unspecified
Severity: normal | Keywords: battery pmu charging
Haspatch: 0 | Blockedby:
Estimated: | Patchreview:
Blocking: | Reproducible:
-----------------------------+----------------------------------------------
Comment(by lindi):
AAT1275 specs say that 16.9K resistor equals 500mA output current limit.
We have 14K resistor there so shouldn't this still be strictly less than
1000 mA? (40K R_SET resistor means 100mA and I assume this is linear).
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/2310#comment:2>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#2310: charging N900 with gta02 causes the gta02 to overheat
-----------------------------+----------------------------------------------
Reporter: lindi | Owner: openmoko-kernel
Type: defect | Status: new
Priority: normal | Milestone:
Component: System Software | Version: unspecified
Severity: normal | Keywords: battery pmu charging
Haspatch: 0 | Blockedby:
Estimated: | Patchreview:
Blocking: | Reproducible:
-----------------------------+----------------------------------------------
Comment(by lindi):
Here's syslog output I recovered from the SD card. Here's what I remember:
1) I stopped gprs, put phone to hostmode and connected it to nokia
2) I was watching current_now and got really nervous when it showed values
around 2000 mA
3) I disconnected nokia from the phone and was really worried since the
current_now values seemed to stay high
4) I did a few suspend/resume cycles but that did not help, current_now
still showed pretty high values. You can see this if you grep for
'consumption' from the syslog output:
Sep 10 19:11:24 ginger logger: resuming (reason EINT09_PMU:button)
(temperature 31.1) (consumption 19875) (energy 98)
Sep 10 19:19:49 ginger logger: resuming (reason EINT09_PMU:button)
(temperature 31.1) (consumption 18000) (energy 97)
Sep 10 19:38:07 ginger logger: resuming (reason EINT09_PMU:button)
(temperature 30.8) (consumption 13500) (energy 93)
Sep 10 19:55:16 ginger logger: resuming (reason EINT09_PMU:button)
(temperature 55.6) (consumption 1812187) (energy 0)
Sep 10 19:57:01 ginger logger: resuming (reason EINT09_PMU:button)
(temperature 58.6) (consumption 1757437) (energy 0)
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/2310#comment:3>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#2310: charging N900 with gta02 causes the gta02 to overheat
-----------------------------+----------------------------------------------
Reporter: lindi | Owner: openmoko-kernel
Type: defect | Status: new
Priority: normal | Milestone:
Component: System Software | Version: unspecified
Severity: normal | Keywords: battery pmu charging
Haspatch: 0 | Blockedby:
Estimated: | Patchreview:
Blocking: | Reproducible:
-----------------------------+----------------------------------------------
Comment(by lindi):
The kernel version was actually andy-tracking 4e418ad2a6bae968
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/2310#comment:4>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
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