[Letux-kernel] automatic charging working with 4.7

Andreas Kemnade andreas at kemnade.info
Tue Jul 26 23:25:07 CEST 2016


On Tue, 26 Jul 2016 22:09:49 +0200
Andreas Kemnade <andreas at kemnade.info> wrote:

> On Tue, 26 Jul 2016 21:07:30 +0200
> Andreas Kemnade <andreas at kemnade.info> wrote:
> 
> > Hi,
> > 
> > I finally took the advice given to us about in the UART slave
> > discussion:
> > Fix powermanagement issues in userspace ;-)
> > So I did:
> > 
> > rmmod twl4030_charger
> > sleep 2
> > #USB PHY_CLK_CTRL
> > #seems to be already done
> > twl-i2c.sh USB w 0xFE 0x01
> > sleep 1
> > twl-i2c.sh USB r 0xFF
> > #should be 01
> > 
> > #USB POWER_CTL_SET  OTG_EN
> > twl-i2c.sh USB w 0xAD 0x20
> > 
> 
> modprobe twl4030_charger here seems to be enough here.
> The further writes seem not to be necessary.
> This was with usb cable attached during boot.
> ethernet gadget seems to work reliably. after that.
> 
> after replugging usb, to re-enable charging
> just a rmmod twl4030_charger ; modprobe twl4030_charger needs
> to be done.
> 
rewriting the charge mode (auto) to the sysfs node seems also be enough,
reloading the module after replugging seems not to be necessary.

Regards,
Andreas


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