Commit 0ea34b57 authored Apr 22, 2013 by Axel Lin Committed by Mark Brown Apr 22, 2013

regulator: palmas: Fix off-by-one for ramp_delay and register value mapping



Datasheet says:
Time Step (TSTEP) selection, when changing the output voltage, the new value is
reached through successive voltage steps (if not bypassed). The equivalent
programmable slew rate of the output voltage is:

TSTEP[1:0]: 00 Jump (no slope control)
TSTEP[1:0]: 01 10mV/us
TSTEP[1:0]: 10 5mV/us (default)
TSTEP[1:0]: 11 2.5mV/us

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

parent e31089c6

drivers/regulator/palmas-regulator.c

+2 −2

Original line number	Original line	Diff line number	Diff line
	@@ -447,9 +447,9 @@ static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,

	if (ramp_delay <= 0)		if (ramp_delay <= 0)
	reg = 0;		reg = 0;
	else if (ramp_delay < 2500)		else if (ramp_delay <= 2500)
	reg = 3;		reg = 3;
	else if (ramp_delay < 5000)		else if (ramp_delay <= 5000)
	reg = 2;		reg = 2;
	else		else
	reg = 1;		reg = 1;