On Tuesday 23 February 2021 15:49:46 Andreas Kemnade wrote:

On Tue, 23 Feb 2021 15:11:20 +0100
Matthias Schiffer [off-list ref] wrote:

quoted

Commit cd060b4d0868 ("power: supply: bq27xxx: fix polarity of current_now")
changed the sign of current_now for all bq27xxx variants, but on BQ28Z610
I'm now seeing negated values *with* that patch.

The GTA04/Openmoko device that was used for testing uses a BQ27000 or
BQ27010 IC, so I assume only the BQ27XXX_O_ZERO code path was incorrect.
Revert the behaviour for newer ICs.

Fixes: cd060b4d0868 "power: supply: bq27xxx: fix polarity of current_now"
Signed-off-by: Matthias Schiffer <redacted>
---

@Andreas Kemnade: It would be great to get a confirmation that the
Openmoko battery indeed uses BQ27000/BQ27010 - I was having some trouble
finding that information.

I can confirm that.
here is the corresponding schematic:

http://people.openmoko.org/tony_tu/GTA02/hardware/GTA02/CT-GTA02.pdf

Regards,
Andreas

Nokia N900 has BQ27200 connected via i2c. CCing Maemo mailing list maemo-leste@lists.dyne.org