On 29/07/14 17:16, Stephen Warren wrote: > I then tried updating the firmware. This didn't work at all. > > First I tried via mxt-app: > >> root@localhost:~# ./obp-utils/mxt-app -d i2c-dev:1-004b --flash >> 130.1_1.0.170.bin >> Version:1.16-65-g0a4c >> Opening firmware file 130.1_1.0.170.bin >> Registered i2c-dev adapter:1 address:0x4b >> Chip detected >> Current firmware version: 1.0.AA >> Skipping version check >> Resetting in bootloader mode >> Registered i2c-dev adapter:1 address:0x25 >> Error Remote I/O error (121) reading from i2c >> Bootloader read failure >> Bootloader not found > > Then I power-cycled and tried via the atmel_mxt_ts modules' sysfs files: > >> root@localhost:~# echo 1 > >> /sys/devices/soc0/7000c400.i2c/i2c-1/1-004b/update_fw >> [ 38.495420] atmel_mxt_ts 1-004b: mxt_bootloader_read: i2c recv failed >> (-121) >> [ 38.506208] atmel_mxt_ts 1-004b: mxt_bootloader_read: i2c recv failed >> (-121) >> [ 38.513836] atmel_mxt_ts 1-004b: The firmware update failed(-121) >> -bash: echo: write error: Remote I/O error OK - that's the same error in both cases, it has tried to switch the device into bootloader mode, however it is not responding on the bootloader I2C address. Couple of things to check: - is the device in deep sleep mode when you run the mxt-app command? can you try doing "mxt-app [device] -W -T7 FFFF" which will make sure it is definitely not sleeping first. - if you do "mxt-app [device] -i" straight after the --flash failure, does it respond (which would mean it hasn't actioned the reset-into-bootloader command) > I also found that removing the module (even without attempting a FW update) > yields: > > After attempted FW update via sysfs: > >> root@localhost:~# rmmod ./atmel_mxt_ts.ko >> [ 81.995672] Unable to handle kernel NULL pointer dereference at virtual address 00000364 Not good. It's trying to free an input device which isn't registered at that point. In a later patch in my series I add a guard around that (mxt_free_input_device): https://github.com/ndyer/linux/commit/bb4800ff8c185 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
