[Letux-kernel] Charging on GTA04
H. Nikolaus Schaller
hns at goldelico.com
Mon Jun 27 20:06:57 CEST 2016
Hi all,
I have not found the issue, but a "good" kernel where works:
a) hdq / bq27000
b) ip over usb
c) charging
What is also not working is USB plug-in detection with the long cable...
Anyways, we have a "good" and a "bad" kernel. Let's start to diff and
find out what is going wrong :)
good: http://download.goldelico.com/letux-kernel/4.3/
bad: http://download.goldelico.com/letux-kernel/letux-4.7-rc5/
What I suspect from this is that some editing of a feature branch (especially
the charger code) did go wrong.
BR,
Nikolaus
> Am 26.06.2016 um 22:14 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>
>
>> Am 26.06.2016 um 19:36 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>
>>
>>> Am 26.06.2016 um 18:43 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>>
>>>
>>>> Am 26.06.2016 um 18:07 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>>>
>>>>
>>>>> Am 26.06.2016 um 17:12 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>>>>
>>>>>
>>>>>> Am 26.06.2016 um 15:01 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>>>>>
>>>>>>
>>>>>>> Am 24.06.2016 um 10:03 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>>>>>>
>>>>>>> Hi,
>>>>>>> it appears as if USB detection is now completely broken on -rc4...
>>>>>>>
>>>>>>> I have two boards where I neither get some "USB plugged in" nor
>>>>>>> does /sys/class/power/usb start charging.
>>>>>>>
>>>>>>> Something has gone wild.
>>>>>>>
>>>>>>> Does it work for anyone of you?
>>>>>>
>>>>>> Here some observations to this problem (using letux-4.7-rc4):
>>>>>>
>>>>>> root at letux:/sys/class/power_supply/twl4030_usb# cat uevent
>>>>>> POWER_SUPPLY_NAME=twl4030_usb
>>>>>> POWER_SUPPLY_STATUS=Not charging
>>>>>> POWER_SUPPLY_ONLINE=0
>>>>>> POWER_SUPPLY_INPUT_CURRENT_LIMIT=841
>>>>>> root at letux:/sys/class/power_supply/twl4030_usb# echo continuous >mode
>>>>>> root at letux:/sys/class/power_supply/twl4030_usb# cat mode
>>>>>> off auto [continuous]
>>>>>> root at letux:/sys/class/power_supply/twl4030_usb# cat uevent
>>>>>> POWER_SUPPLY_NAME=twl4030_usb
>>>>>> POWER_SUPPLY_STATUS=Charging
>>>>>> POWER_SUPPLY_ONLINE=1
>>>>>> POWER_SUPPLY_VOLTAGE_NOW=0
>>>>>> POWER_SUPPLY_CURRENT_NOW=12474
>>>>>> POWER_SUPPLY_INPUT_CURRENT_LIMIT=841
>>>>>> root at letux:/sys/class/power_supply/twl4030_usb# echo auto >mode
>>>>>> [ 189.735412] twl4030_bci 48070000.i2c:twl at 48:bci: battery temperature out of range
>>>>>> [ 189.766967] twl4030_bci 48070000.i2c:twl at 48:bci: battery temperature out of range
>>>>>> root at letux:/sys/class/power_supply/twl4030_usb# cat uevent
>>>>>> POWER_SUPPLY_NAME=twl4030_usb
>>>>>> POWER_SUPPLY_STATUS=Not charging
>>>>>> POWER_SUPPLY_ONLINE=0
>>>>>> POWER_SUPPLY_INPUT_CURRENT_LIMIT=841
>>>>>> root at letux:/sys/class/power_supply/twl4030_usb#
>>>>>>
>>>>>> This means:
>>>>>> 1. "auto" mode is broken
>>>>>> 2. continuous mode seems to charge
>>>>>> 3. switching back to auto mode gives strange "battery temperature out of range" warning
>>>>>>
>>>>>> And I have no ethernet-gadget.
>>>>>>
>>>>>> I think I should compare with letux-4.6.0 or other -rc. And I should enable debugging
>>>>>> of the driver.
>>>>>
>>>>> Well, 4.6.0 isn't charging as well (and no ethernet gadget). And older versions are not properly booting.
>>>>>
>>>>> One strange observation:
>>>>>
>>>>> root at letux:~# cat /sys/class/power_supply/twl4030_usb/voltage_now
>>>>> 0
>>>>> root at letux:~# cat /sys/class/power_supply/twl4030_usb/uevent
>>>>> POWER_SUPPLY_NAME=twl4030_usb
>>>>> POWER_SUPPLY_STATUS=Charging
>>>>> POWER_SUPPLY_ONLINE=1
>>>>> POWER_SUPPLY_VOLTAGE_NOW=0
>>>>> POWER_SUPPLY_CURRENT_NOW=808476
>>>>> POWER_SUPPLY_INPUT_CURRENT_LIMIT=798505
>>>>> root at letux:~#
>>>>>
>>>>> This means that voltage_now and POWER_SUPPLY_VOLTAGE_NOW is 0 although charging!
>>>>>
>>>>> This is definitively different to 4.6.0 where USB voltage is displayed.
>>>>>
>>>>> Is perhaps the madc broken?
>>>>
>>>> Yes and no...
>>>>
>>>> This is what I get with #define DEBUG
>>>>
>>>> root at letux:~# dmesg|fgrep bci
>>>> [ 8.864227] driver_register 'twl4030_bci'
>>>> [ 8.864868] twl4030_bci_probe
>>>> [ 8.864959] twl4030_bci_probe: of_find_compatible_node
>>>> [ 8.865020] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddfad020)
>>>> [ 8.865051] bci->transceiver = fffffdfb
>>>> [ 8.943939] twl4030_bci_probe
>>>> [ 8.944000] twl4030_bci_probe: of_find_compatible_node
>>>> [ 8.944061] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddfad020)
>>>> [ 8.944091] bci->transceiver = fffffdfb
>>>> [ 8.953796] twl4030_bci_probe
>>>> [ 8.953857] twl4030_bci_probe: of_find_compatible_node
>>>> [ 8.953918] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddfad220)
>>>> [ 8.953948] bci->transceiver = fffffdfb
>>>> [ 8.973114] twl4030_bci_probe
>>>> [ 8.973175] twl4030_bci_probe: of_find_compatible_node
>>>> [ 8.973236] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddfad220)
>>>> [ 8.973266] bci->transceiver = fffffdfb
>>>> [ 8.988189] twl4030_bci_probe
>>>> [ 8.988250] twl4030_bci_probe: of_find_compatible_node
>>>> [ 8.988311] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddd99320)
>>>> [ 8.988342] bci->transceiver = fffffdfb
>>>> [ 9.232696] twl4030_bci_probe
>>>> [ 9.232788] twl4030_bci_probe: of_find_compatible_node
>>>> [ 9.232849] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddd99320)
>>>> [ 9.232849] bci->transceiver = fffffdfb
>>>> [ 9.238159] twl4030_bci_probe
>>>> [ 9.238250] twl4030_bci_probe: of_find_compatible_node
>>>> [ 9.238281] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddfad020)
>>>> [ 9.238311] bci->transceiver = fffffdfb
>>>> [ 9.396270] twl4030_bci_probe
>>>> [ 9.396362] twl4030_bci_probe: of_find_compatible_node
>>>> [ 9.396392] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, dcac2f20)
>>>> [ 9.396423] bci->transceiver = fffffdfb
>>>> [ 9.424865] twl4030_bci_probe
>>>> [ 9.424957] twl4030_bci_probe: of_find_compatible_node
>>>> [ 9.424987] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddfad020)
>>>> [ 9.425018] bci->transceiver = fffffdfb
>>>> [ 9.477874] twl4030_bci_probe
>>>> [ 9.477966] twl4030_bci_probe: of_find_compatible_node
>>>> [ 9.477996] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddfad120)
>>>> [ 9.478027] bci->transceiver = fffffdfb
>>>> [ 9.530670] twl4030_bci_probe
>>>> [ 9.530761] twl4030_bci_probe: of_find_compatible_node
>>>> [ 9.530822] devm_usb_get_phy_by_node(ddcd2410 48070000.i2c:twl at 48:bci, df9b1af4 twl4030-usb, ddfad720)
>>>> [ 9.530853] bci->transceiver = dca39410
>>>> [ 9.530883] twl4030_bci 48070000.i2c:twl at 48:bci: could not request vac iio channel -19
>>>> [ 9.546997] twl4030_bci 48070000.i2c:twl at 48:bci: transceiver = dca39410
>>>> [ 9.546997] twl4030_bci 48070000.i2c:twl at 48:bci: OTG notify 0
>>>> [ 9.548370] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.549224] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.549804] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.550292] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.550781] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.551300] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.552612] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.553131] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.553558] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.554046] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.554534] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.554992] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 9.626617] twl4030_bci 48070000.i2c:twl at 48:bci: v=0 cur=-850000 limit=0 target=500000
>>>> [ 10.615722] twl4030_bci 48070000.i2c:twl at 48:bci: OTG notify 2
>>>> [ 12.135711] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.136260] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.136840] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.137390] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.137817] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.139190] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.139678] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.140136] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.140563] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.141021] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.143005] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.143524] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.143951] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.144409] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.144866] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.146545] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.146972] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.147460] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.147918] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.165832] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.168548] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.169006] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.169433] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.169860] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.170288] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.198486] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.201812] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.202239] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.202697] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.203155] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.211883] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.212341] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.212799] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.213226] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.213684] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.216888] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.217437] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.217895] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.219116] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.219635] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.419799] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.423065] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.423522] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.423980] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.424438] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.426727] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.427215] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.427642] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.428100] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.428558] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.430541] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.431182] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.431610] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.432067] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.432525] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.447662] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.448211] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.448669] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.449127] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 12.449554] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> root at letux:~#
>>>>
>>>> root at letux:~# echo auto >/sys/class/power_supply/twl4030_usb/mode
>>>> [ 280.254119] twl4030_bci 48070000.i2c:twl at 48:bci: BCI irq 00 08
>>>> [ 280.266662] twl4030_bci 48070000.i2c:twl at 48:bci: BCI irq 00 08
>>>> [ 280.279632] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> root at letux:~# [ 280.288757] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.294769] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.303192] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.311340] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.319427] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.327392] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.334716] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.342620] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.356506] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.370605] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.387207] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.393249] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.403289] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.409912] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.418304] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.427124] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.439941] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.447601] twl4030_bci 48070000.i2c:twl at 48:bci: v=0 cur=9150 limit=0 target=500000
>>>> [ 280.452423] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.461273] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.465728] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.466339] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.466888] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.467437] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.467926] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.476196] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.488464] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.490081] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.502502] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.514495] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.557800] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.576171] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.586883] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.607116] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.622772] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.629150] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.638549] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.646270] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.652954] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.659973] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.667388] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.674468] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.681243] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.689605] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.700714] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.708557] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.716094] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.722961] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.731384] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.739349] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.747070] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.754119] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 280.761901] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>>
>>>> root at letux:~# echo continuous >/sys/class/power_supply/twl4030_usb/mode
>>>> root at letux:~# [ 324.358245] twl4030_bci 48070000.i2c:twl at 48:bci: BCI irq 00 10
>>>> [ 324.371276] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.378295] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.385040] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.394165] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.401306] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.402191] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.414855] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.426727] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.441223] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.447875] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.455444] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.463897] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.471313] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.479522] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.488952] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.497528] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.511199] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.522888] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.534454] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.544067] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.551605] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.558898] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.566894] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.573669] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.581848] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.589080] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.597717] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.652496] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.659973] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.667877] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.677307] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>> [ 324.686981] twl4030_bci 48070000.i2c:twl at 48:bci: state: 00
>>>>
>>>> Really interesting is
>>>>
>>>> [ 9.530883] twl4030_bci 48070000.i2c:twl at 48:bci: could not request vac iio channel -19
>>>>
>>>> Which means there is some error in the madc iio subsystem at that stage.
>>>
>>> Well, the bug is in one of our DT patches:
>>>
>>> <http://git.goldelico.com/?p=gta04-kernel.git;a=blob;f=arch/arm/boot/dts/twl4030.dtsi;h=0c862d2d7b5aa7e8460b91d143d6245a5c5a8da8;hb=f704c620abd294972e754c8b59a085191e411da8#l27>
>>>
>>> this line should read
>>>
>>> io-channel-names = "vac";
>>>
>>>>
>>>> The second observation is that there is nothing happening on USB plug/unplug.
>>>>
>>>> IMHO USB-Plug detection is also broken (don't know if hw or software).
>>>
>>> Interestingly, I see different OTG notify values depending on whether
>>> the cable is plugged in during boot or not. But no new notifications if I
>>> unplug the cable.
>>>
>>> Well, that is only part of the truth:
>>>
>>> * if I take a short USB cable I can see notify 0 and notify 2 (but still no charging nor ethernet gadget)
>>> * if I take a long cable and plug/unplug at the hub end, I don't see notifications
>>> * if I take a long cable and plug/unplug at the gta04 end, I see notifications
>>>
>>> * MADC reports some mV only for VBUS
>>>
>>> That is really weird.
>>>
>>> What could this be (if not a hardware problem)?
>>
>> unlikely. I have swapped the SD card to a different GTA04 and it shows the same effects
>> (long vs. short cable, no charging).
>
> HW problem can be definitively ruled out.
>
> I have flashed a fresh SD card through
>
> wget -O - http://download.goldelico.com/gta04/production/20150318-gta04.dd.bz2 | bzcat >/dev/sdc
>
> and that works perfectly (WARNING: it flashes an older U.Boot!).
>
> After reflashing the previous U-Boot and booting 4.6.0 it appears that charging works a little better.
> And I got sometimes Ethernet over USB capability.
>
> But I also got strange problems when unplugging the USB cable:
>
> root at letux:~# [ 127.712615] musb-hdrc musb-hdrc.0.auto: VBUS_ERROR in b_idle (90, <VBusValid), retry #0, port1 00000100
>
> Quite strange...
>
> Will try 4.7-rc4 again tomorrow.
>
>>
>> So please help to fix this!
>>
>>>
>>> * USB/OTG detection is broken (some race between VBUS and D+/D- level detection on cable plug)
>>> * charger is fully enabled (too high inrush-current) preventing VBUS to rising above the VBUS detection level
>>> with short cable I have 4.54V
>>> with long cable I have just 4.39V
>>> * a bug in MADC so that VBUS is not reported properly
>>> * is the OTG charge pump not being turned on/off?
>>>
>>> More ideas?
>>>
>>> BR,
>>> Nikolaus
>>>
>>> _______________________________________________
>>> http://projects.goldelico.com/p/gta04-kernel/
>>> Letux-kernel mailing list
>>> Letux-kernel at openphoenux.org
>>> http://lists.goldelico.com/mailman/listinfo.cgi/letux-kernel
>>
>> _______________________________________________
>> http://projects.goldelico.com/p/gta04-kernel/
>> Letux-kernel mailing list
>> Letux-kernel at openphoenux.org
>> http://lists.goldelico.com/mailman/listinfo.cgi/letux-kernel
>
> _______________________________________________
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