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* bq27000: directory/files exists even when hardware is not available
@ 2018-04-20  7:40 Pavel Machek
  2018-04-20  7:48 ` Pali Rohár
  0 siblings, 1 reply; 3+ messages in thread
From: Pavel Machek @ 2018-04-20  7:40 UTC (permalink / raw)
  To: kernel list, linux-arm-kernel, linux-omap, tony, sre, nekit1000,
	mpartap, merlijn, afd, pali.rohar, linux-pm

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Hi!

On droid4 (4.17-rc1), /sys/class/power_supply/bq27000-battery exists
even when hardware is not present (as on Droid 4).

Any ideas?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: bq27000: directory/files exists even when hardware is not available
  2018-04-20  7:40 bq27000: directory/files exists even when hardware is not available Pavel Machek
@ 2018-04-20  7:48 ` Pali Rohár
  2018-04-20  8:17   ` Pavel Machek
  0 siblings, 1 reply; 3+ messages in thread
From: Pali Rohár @ 2018-04-20  7:48 UTC (permalink / raw)
  To: Pavel Machek
  Cc: kernel list, linux-arm-kernel, linux-omap, tony, sre, nekit1000,
	mpartap, merlijn, afd, linux-pm

On Friday 20 April 2018 09:40:36 Pavel Machek wrote:
> Hi!
> 
> On droid4 (4.17-rc1), /sys/class/power_supply/bq27000-battery exists
> even when hardware is not present (as on Droid 4).
> 
> Any ideas?
> 									Pavel

Somebody must have registered bq device into power_supply subsystem.
Maybe DT note is present?

-- 
Pali Rohár
pali.rohar@gmail.com

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: bq27000: directory/files exists even when hardware is not available
  2018-04-20  7:48 ` Pali Rohár
@ 2018-04-20  8:17   ` Pavel Machek
  0 siblings, 0 replies; 3+ messages in thread
From: Pavel Machek @ 2018-04-20  8:17 UTC (permalink / raw)
  To: Pali Rohár
  Cc: kernel list, linux-arm-kernel, linux-omap, tony, sre, nekit1000,
	mpartap, merlijn, afd, linux-pm

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On Fri 2018-04-20 09:48:26, Pali Rohár wrote:
> On Friday 20 April 2018 09:40:36 Pavel Machek wrote:
> > Hi!
> > 
> > On droid4 (4.17-rc1), /sys/class/power_supply/bq27000-battery exists
> > even when hardware is not present (as on Droid 4).
> > 
> > Any ideas?
> > 									Pavel
> 
> Somebody must have registered bq device into power_supply subsystem.
> Maybe DT note is present?

No, I don't think so:

pavel@duo:/data/l/linux-n900$ grep bq27 arch/arm/boot/dts/*
Binary file arch/arm/boot/dts/omap3-n900.dtb matches
arch/arm/boot/dts/omap3-n900.dts:	     bq27200: bq27200@55 {
arch/arm/boot/dts/omap3-n900.dts:	     	      compatible =
"ti,bq27200";
arch/arm/boot/dts/omap3-n900.dts~:	bq27200: bq27200@55 {
arch/arm/boot/dts/omap3-n900.dts~:		 compatible =
"ti,bq27200";
arch/arm/boot/dts/omap3-n900.dts.orig:	bq27200: bq27200@55 {
arch/arm/boot/dts/omap3-n900.dts.orig:		 compatible =
"ti,bq27200";
Binary file arch/arm/boot/dts/omap3-n950.dtb matches
arch/arm/boot/dts/omap3-n950-n9.dtsi:	     bq27521: bq27521@55 {
arch/arm/boot/dts/omap3-n950-n9.dtsi:	     	      compatible =
"ti,bq27521";
arch/arm/boot/dts/omap3-n950-n9.dtsi~:	bq27521: bq27521@55 {
arch/arm/boot/dts/omap3-n950-n9.dtsi~:		 compatible =
"ti,bq27521";
arch/arm/boot/dts/omap3-n950-n9.dtsi.orig:	bq27521: bq27521@55 {
arch/arm/boot/dts/omap3-n950-n9.dtsi.orig:		 compatible =
"ti,bq27521";
Binary file arch/arm/boot/dts/omap3-n9.dtb matches
arch/arm/boot/dts/omap3-pandora-common.dtsi:	bq27500@55 {
arch/arm/boot/dts/omap3-pandora-common.dtsi:		   compatible
= "ti,bq27500";
arch/arm/boot/dts/qcom-apq8064-asus-nexus7-flo.dts:
bq27541@55 {
arch/arm/boot/dts/qcom-apq8064-asus-nexus7-flo.dts:
compatible = "ti,bq27541";
arch/arm/boot/dts/rk3288-veyron-minnie.dts:	battery: bq27500@55 {
arch/arm/boot/dts/rk3288-veyron-minnie.dts:		 compatible =
"ti,bq27500";
pavel@duo:/data/l/linux-n900$


Is it possible that one wire subsystem registers bq27000 even without
device tree node?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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2018-04-20  7:40 bq27000: directory/files exists even when hardware is not available Pavel Machek
2018-04-20  7:48 ` Pali Rohár
2018-04-20  8:17   ` Pavel Machek

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