Messages in this thread Patch in this message | | | From | Baolin Wang <> | Subject | [PATCH] extcon: Add documentation for EXTCON_CHG_USB_SLOW/FAST | Date | Tue, 3 Jan 2017 13:50:54 +0800 |
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Currently there are no documentation for EXTCON_CHG_USB_SLOW/FAST charger connector. These names don't mean much and no guide to tell users how to use it, thus try to add documentation to make them clear.
Suggested-by: NeilBrown <neilb@suse.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> --- include/linux/extcon.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/include/linux/extcon.h b/include/linux/extcon.h index 0020123..ceec1f0 100644 --- a/include/linux/extcon.h +++ b/include/linux/extcon.h @@ -53,6 +53,10 @@ * the USB connector, which means EXTCON_CHG_USB_SDP should always * appear together with EXTCON_USB. The same as ACA charger connector, * EXTCON_CHG_USB_ACA would normally appear with EXTCON_USB_HOST. + * + * A cable of type EXTCON_CHG_USB_SLOW can provide at least 500mA of + * current at 5V. A cable of type EXTCON_CHG_USB_FAST can provide at + * least 1A of current at 5V. */ #define EXTCON_CHG_USB_SDP 5 /* Standard Downstream Port */ #define EXTCON_CHG_USB_DCP 6 /* Dedicated Charging Port */ -- 1.7.9.5
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