regulator: max8973: add support to configure ETR from DT

[linux-2.6-microblaze.git] / drivers / regulator / max8973-regulator.c

diff --git a/drivers/regulator/max8973-regulator.c b/drivers/regulator/max8973-regulator.c
index e94ddcf..a8fd7f4 100644 (file)
--- a/drivers/regulator/max8973-regulator.c
+++ b/drivers/regulator/max8973-regulator.c
@@ -421,6 +421,8 @@ static struct max8973_regulator_platform_data *max8973_parse_dt(
        struct device_node *np = dev->of_node;
        int ret;
        u32 pval;
+       bool etr_enable;
+       bool etr_sensitivity_high;
 
        pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
        if (!pdata)
@@ -452,6 +454,23 @@ static struct max8973_regulator_platform_data *max8973_parse_dt(
        if (of_property_read_bool(np, "maxim,enable-bias-control"))
                pdata->control_flags  |= MAX8973_CONTROL_BIAS_ENABLE;
 
+       etr_enable = of_property_read_bool(np, "maxim,enable-etr");
+       etr_sensitivity_high = of_property_read_bool(np,
+                               "maxim,enable-high-etr-sensitivity");
+       if (etr_sensitivity_high)
+               etr_enable = true;
+
+       if (etr_enable) {
+               if (etr_sensitivity_high)
+                       pdata->control_flags |=
+                               MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US;
+               else
+                       pdata->control_flags |=
+                               MAX8973_CONTROL_CLKADV_TRIP_150mV_PER_US;
+       } else {
+               pdata->control_flags |= MAX8973_CONTROL_CLKADV_TRIP_DISABLED;
+       }
+
        return pdata;
 }