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tps65910:set dcdc time step 12.5mv/us

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This commit is contained in:
张晴
2013-03-14 11:47:26 +08:00
parent e609b8428a
commit 8283fc01e8
2 changed files with 5 additions and 2 deletions
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5
arch/arm/mach-rk30/board-pmu-tps65910.c
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@@ -92,7 +92,8 @@ int tps65910_pre_init(struct tps65910 *tps65910){
}
val |= (1<<5); //when 1: 1.5 A
val |= (0x07<<2); //TSTEP[2:0] = 111 : 2.5 mV/<2F><>s(sampling 3 Mhz/5)
val &= (~(0x3 <<2));
val |= (0x01<<2); //TSTEP[3:2] = 01 : 12.5 mV/us(sampling 3 Mhz)
err = tps65910_reg_write(tps65910, TPS65910_VDD1, val);
if (err) {
printk(KERN_ERR "Unable to write TPS65910_VDD1 reg\n");
@@ -107,6 +108,8 @@ int tps65910_pre_init(struct tps65910 *tps65910){
}
val |= (1<<5); //when 1: 1.5 A
val &= (~(0x3 <<2));
val |= (0x01<<2); //TSTEP[3:2] = 01 : 12.5 mV/us(sampling 3 Mhz)
err = tps65910_reg_write(tps65910, TPS65910_VDD2, val);
if (err) {
printk(KERN_ERR "Unable to write TPS65910_VDD2 reg\n");

2
drivers/regulator/tps65910-regulator.c
View File

@@ -936,7 +936,7 @@ static int tps65910_set_voltage_dcdc_time_sel(struct regulator_dev *dev,
switch (id) {
case TPS65910_REG_VDD1:
case TPS65910_REG_VDD2:
return DIV_ROUND_UP(abs(old_volt - new_volt), 12500);
return DIV_ROUND_UP(abs(old_volt - new_volt)*2, 12500);
case TPS65911_REG_VDDCTRL:
return DIV_ROUND_UP(abs(old_volt - new_volt), 5000);
}