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pmic: rk808: slove set voltage error

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rk808 setting voltage had a overshoot question
so we set voltage must step by step.
support 12.5mv/step.

Change-Id: Idfce7b57d6717e51afaff2c170eff7bd16de23af
Signed-off-by: zhangqing <zhangqing@rock-chips.com>
This commit is contained in:
zhangqing
2015-09-15 07:20:56 -07:00
committed by Gerrit Code Review
parent 0f3661b46e
commit cccf1792d7
1 changed files with 2 additions and 2 deletions
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4
drivers/mfd/rk808.c
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@@ -48,7 +48,7 @@
struct rk808 *g_rk808;
#define DCDC_RAISE_VOL_BYSTEP 1
#define DCDC_VOL_STEP 25000 //25mv
#define DCDC_VOL_STEP 12500 /*12.5mv*/
static struct mfd_cell rk808s[] = {
{
@@ -514,7 +514,7 @@ static int rk808_dcdc_set_voltage(struct regulator_dev *dev,
val = rk808_dcdc_select_min_voltage(dev,vol_temp,vol_temp,buck);
// printk("rk808_dcdc_set_voltage buck = %d vol_temp= %d old_voltage= %d min_uV =%d \n",buck,vol_temp,old_voltage,min_uV);
ret = rk808_set_bits(rk808, rk808_BUCK_SET_VOL_REG(buck), BUCK_VOL_MASK, val);
}while(vol_temp != max_uV);
} while (vol_temp < max_uV);
}
else{
val = rk808_dcdc_select_min_voltage(dev,min_uV,max_uV,buck);