25.03.2020 16:32, Jiada Wang пишет: > From: Nick Dyer <nick.dyer@xxxxxxxxxxx> > > Allow the driver to optionally manage enabling/disable power to the touch > controller itself. If the regulators are not present then use the deep > sleep power mode instead. > > For a correct power on sequence, it is required that we have control over > the RESET line. ... > + data->reg_vdd = devm_regulator_get(dev, "vdd"); > + if (IS_ERR(data->reg_vdd)) { > + error = PTR_ERR(data->reg_vdd); > + dev_err(dev, "Error %d getting vdd regulator\n", error); > + goto fail; > + } > + > + data->reg_avdd = devm_regulator_get(dev, "avdd"); > + if (IS_ERR(data->reg_avdd)) { > + error = PTR_ERR(data->reg_avdd); > + dev_err(dev, "Error %d getting avdd regulator\n", error); > + goto fail_release; > + } Hello Jiada, The new regulator properties should be documented in the device-tree binding.