Configuring Power in Device Tree for Display Port on TX2

Hello,

What is the correct configuration in the power tree for the display port on the Jetson TX2? I’m looking at the sources/hardware/nvidia/platform/t18x/common/kernel-dts/t18x-common-platforms/tegra186-quill-power-tree-p3310-1000-a00-00.dtsi configuration file. What should battery_reg be replaced with?

host1x {
		nvdisplay@15200000 {
			avdd_lcd-supply = <&en_avdd_disp_3v3>;
			dvdd_lcd-supply = <&en_vdd_disp_1v8>;
			avdd_dsi_csi-supply = <&spmic_sd1>;
			outp-supply = <&vpp_lcd>;
			outn-supply = <&vmm_lcd>;
			vdd_lcd_bl-supply = <&battery_reg>;
			vdd_lcd_bl_en-supply = <&vdd_bl_en>;
			/* added hdmi for testing in head 0 */
			avdd_hdmi-supply = <&spmic_ldo7>;
			avdd_hdmi_pll-supply = <&spmic_sd2>;
			vdd_hdmi_5v0-supply = <&vdd_hdmi>;
		};
		nvdisplay@15210000 {
			avdd_hdmi-supply = <&spmic_ldo7>;
			avdd_hdmi_pll-supply = <&spmic_sd2>;
			vdd_hdmi_5v0-supply = <&vdd_hdmi>;
		};
		nvdisplay@15220000 {
			vdd-dp-pwr-supply = <&battery_reg>;
			avdd-dp-pll-supply = <&battery_reg>;
			vdd-edp-sec-mode-supply = <&battery_reg>;
			vdd-dp-pad-supply = <&battery_reg>;
			vdd_hdmi_5v0-supply = <&battery_reg>;
		};
		vi@15700000 {
			avdd_dsi_csi-supply = <&spmic_sd1>;
		};
		nvcsi@150c0000 {
			nvidia,csi_regulator = "avdd_dsi_csi";
		};
	};

Visionear,

What usecase are you try to do? Single DP monitor or with more displays?

We are simply replacing the development board HDMI on DP1 with a single display port on DP0. We are only using one display.

Replied this in another topic you filed. Please check.

WayneWWW Put the link to the other topic in this topic.

Don’t leave topics hanging without answers.

Please quit being a …

Hi terrysu50z,

Thanks for the comments, please continue following up those topics you opened, don’t spend time on those none-related.