[SOLVED]How to change LDO4 voltage from 2.8V to 3.3V?

So I try to change this value in DTB file “tegra124-jetson_tk1-pmic-pm375-0000-c00-00.dtsi” . But after rebooting, and measuring the voltage on J3A2 -pin 6 I still have 2.8V. Iven after booting my driver, value not changed.

as3722_ldo4: ldo4 {
				     regulator-name = "avdd-cam";
				     regulator-min-microvolt = <2800000>;
				     regulator-max-microvolt = <2800000>;

				     consumers {
					     c1 {
						     regulator-consumer-supply = "vdd_2v7_hv";
					     };
					     c2 {
						     regulator-consumer-supply = "avdd_cam2_cam";
					     };
					     c3 {
						     regulator-consumer-supply = "vana";
					     };
					     c5 {
						     regulator-consumer-supply = "vana";
						     regulator-consumer-device = "2-0018";
					     };
					     c6 {
						     regulator-consumer-supply = "vana";
						     regulator-consumer-device = "2-0036";
					     };
				     };
			     };

I change value from
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
to
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;

Is that write am I doing, or I need change something else in others files to get LDO4 voltage value 3.3V ??

Hello, Leon11t:
After re-compile the DTB with changes you’ve made, I can see the ldo4 volt changes to 3.3v. So please make sure that you’ve compiled/replaced the correct DTB for the Jetson TK1.
BTW: You can also check the voltage through sysfs node.
/sys/devices/platform/tegra12-i2c.4/i2c-4/4-0040/as3722-regulator.0/regulator/
lists all registered regulators. You can check the name ‘avdd-cam’ for the desired LDO you want to change.
You can check ‘microvolts’ for current volt and other nodes for desired configurations.

br
ChenJian

Hi Jachen. Yes, I already solved this issues. The wrong *.dtb file was written in extlinux.conf