diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
index d3cf64c16dcd..b3ba23a88a0b 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
@@ -85,6 +85,24 @@ map1 {
 	};
 };
 
+/*
+ * ADDITIONS TO FIXED REGULATORS DEFINED IN PARENT DEVICE TREE FILES
+ *
+ * Sort order matches the order in the parent files (parents before children).
+ */
+
+&pp3300_dx_edp {
+	/*
+	 * The atna33xc20 really likes to be power cycled to keep it from
+	 * getting in a bad state. This is the reason that the touchscreen
+	 * rail and eDP rails are separate from each other on homestar (but
+	 * not other trogdor devices) Make sure it starts "off" at bootup.
+	 */
+	/delete-property/ regulator-boot-on;
+};
+
+/* ADDITIONS TO NODES DEFINED IN PARENT DEVICE TREE FILES */
+
 ap_ts_pen_1v8: &i2c4 {
 	status = "okay";
 	clock-frequency = <400000>;
diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-parade-ps8640.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-parade-ps8640.dtsi
index e27a769f8cd4..5aa7949b5328 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-parade-ps8640.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-parade-ps8640.dtsi
@@ -34,6 +34,14 @@ pp3300_brij_ps8640: pp3300-brij-ps8640-regulator {
 
 &pp3300_dx_edp {
 	off-on-delay-us = <500000>;
+
+	/*
+	 * It's nicer to start with this regulator enabled. The
+	 * bootloader may have left it on and it's nice not to cause an
+	 * extra power cycle of the touchscreen and eDP panel at bootup.
+	 * This should help speed bootup because we have off-on-delay-us.
+	 */
+	regulator-boot-on;
 };
 
 /* ADDITIONS TO NODES DEFINED IN PARENT DEVICE TREE FILES */
diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-ti-sn65dsi86.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-ti-sn65dsi86.dtsi
index 3188788306d0..e52b8776755d 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-ti-sn65dsi86.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-ti-sn65dsi86.dtsi
@@ -15,6 +15,14 @@
 
 &pp3300_dx_edp {
 	off-on-delay-us = <500000>;
+
+	/*
+	 * It's nicer to start with this regulator enabled. The
+	 * bootloader may have left it on and it's nice not to cause an
+	 * extra power cycle of the touchscreen and eDP panel at bootup.
+	 * This should help speed bootup because we have off-on-delay-us.
+	 */
+	regulator-boot-on;
 };
 
 /* ADDITIONS TO NODES DEFINED IN PARENT DEVICE TREE FILES */