diff options
Diffstat (limited to 'arch/arm/mach-tegra/dvfs.c')
| -rw-r--r-- | arch/arm/mach-tegra/dvfs.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/mach-tegra/dvfs.c b/arch/arm/mach-tegra/dvfs.c index dc0d779870a6..2276c8befbe5 100644 --- a/arch/arm/mach-tegra/dvfs.c +++ b/arch/arm/mach-tegra/dvfs.c @@ -98,6 +98,7 @@ static int dvfs_rail_set_voltage(struct dvfs_rail *rail, int millivolts) int step = (millivolts > rail->millivolts) ? rail->step : -rail->step; int i; int steps; + bool jmp_to_zero; if (!rail->reg) { if (millivolts == rail->millivolts) @@ -110,10 +111,14 @@ static int dvfs_rail_set_voltage(struct dvfs_rail *rail, int millivolts) return 0; rail->resolving_to = true; - steps = DIV_ROUND_UP(abs(millivolts - rail->millivolts), rail->step); + jmp_to_zero = rail->jmp_to_zero && + ((millivolts == 0) || (rail->millivolts == 0)); + steps = jmp_to_zero ? 1 : + DIV_ROUND_UP(abs(millivolts - rail->millivolts), rail->step); for (i = 0; i < steps; i++) { - if (abs(millivolts - rail->millivolts) > rail->step) + if (!jmp_to_zero && + (abs(millivolts - rail->millivolts) > rail->step)) rail->new_millivolts = rail->millivolts + step; else rail->new_millivolts = millivolts; |