diff options
| -rw-r--r-- | drivers/cpufreq/imx6q-cpufreq.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index 176b9da5ead4..518d8a0a183b 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -21,12 +21,15 @@ #define PU_SOC_VOLTAGE_NORMAL 1250000 #define PU_SOC_VOLTAGE_HIGH 1275000 +#define DC_VOLTAGE_MIN 1300000 +#define DC_VOLTAGE_MAX 1400000 #define FREQ_1P2_GHZ 1200000000 #define FREQ_396_MHZ 396000 static struct regulator *arm_reg; static struct regulator *pu_reg; static struct regulator *soc_reg; +static struct regulator *dc_reg; static struct clk *arm_clk; static struct clk *pll1_sys_clk; @@ -244,9 +247,15 @@ static int imx6_cpufreq_pm_notify(struct notifier_block *nb, case PM_SUSPEND_PREPARE: cpufreq_policy_min_pre_suspend = data->user_policy.min; data->user_policy.min = data->user_policy.max; + + if (!IS_ERR(dc_reg)) + regulator_set_voltage_tol(dc_reg, DC_VOLTAGE_MAX, 0); break; case PM_POST_SUSPEND: data->user_policy.min = cpufreq_policy_min_pre_suspend; + + if (!IS_ERR(dc_reg)) + regulator_set_voltage_tol(dc_reg, DC_VOLTAGE_MIN, 0); break; default: break; @@ -315,6 +324,10 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev) goto put_node; } + dc_reg = devm_regulator_get_optional(cpu_dev, "dc"); + if (!IS_ERR(dc_reg)) + regulator_set_voltage_tol(dc_reg, DC_VOLTAGE_MIN, 0); + /* * soc_reg sync with arm_reg if arm shares the same regulator * with soc. Otherwise, regulator common framework will refuse to update |