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Commit 34c11a70 authored by Paer-Olof Haakansson's avatar Paer-Olof Haakansson Committed by Lee Jones
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u8500-charger: Delay for USB enumeration 



If charging is started before USB enumeration of an Accessory
Charger Adapter has finished, the AB8500 will generate a
VBUS_ERROR. This in turn results in timeouts and delays the
enumeration with around 15 seconds. This patch delays the
charging and then ramps currents slowly to avoid VBUS errors.
The delay allows the enumeration to have finished before
charging is turned on.

Signed-off-by: default avatarMartin Sjoblom <martin.w.sjoblom@stericsson.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
Reviewed-by: default avatarJonas ABERG <jonas.aberg@stericsson.com>
Tested-by: default avatarJonas ABERG <jonas.aberg@stericsson.com>
parent 97034a1e

drivers/mfd/ab8500-core.c

+6 −0
Original line number Diff line number Diff line
@@ -749,6 +749,12 @@ static struct resource ab8500_charger_resources[] = { 
		.end = AB8500_INT_CH_WD_EXP,

		.flags = IORESOURCE_IRQ,

	},

	{

		.name = "VBUS_CH_DROP_END",

		.start = AB8500_INT_VBUS_CH_DROP_END,

		.end = AB8500_INT_VBUS_CH_DROP_END,

		.flags = IORESOURCE_IRQ,

	},

};



static struct resource ab8500_btemp_resources[] = {

drivers/power/ab8500_charger.c

+325 −107

File changed.

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