[PATCH 1/2] arm64: dts: qcom: hamoa-iot-evk: Add eDP display overlay
From: Anand Tiwari
Date: Thu Aug 06 2026 - 12:41:38 EST
Move the eDP panel configuration and related power, backlight, and pinctrl
nodes into a separate overlay. Keep the base DTB suitable for headless
variants and provide a composite DTB for headed variants.
Signed-off-by: Anand Tiwari <anand.tiwari@xxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/Makefile | 3 +
arch/arm64/boot/dts/qcom/hamoa-iot-evk-edp.dtso | 126 ++++++++++++++++++++++++
arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 107 --------------------
3 files changed, 129 insertions(+), 107 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 1c86e7e98f55..bb0da34983c8 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -20,6 +20,9 @@ dtb-$(CONFIG_ARCH_QCOM) += glymur-asus-zenbook-a16-ux3607oa.dtb
dtb-$(CONFIG_ARCH_QCOM) += glymur-crd.dtb
dtb-$(CONFIG_ARCH_QCOM) += hamoa-iot-evk.dtb
+hamoa-iot-evk-edp-dtbs := hamoa-iot-evk.dtb hamoa-iot-evk-edp.dtbo
+dtb-$(CONFIG_ARCH_QCOM) += hamoa-iot-evk-edp.dtb
+
hamoa-iot-evk-el2-dtbs := hamoa-iot-evk.dtb x1-el2.dtbo
dtb-$(CONFIG_ARCH_QCOM) += hamoa-iot-evk-el2.dtb
diff --git a/arch/arm64/boot/dts/qcom/hamoa-iot-evk-edp.dtso b/arch/arm64/boot/dts/qcom/hamoa-iot-evk-edp.dtso
new file mode 100644
index 000000000000..759d05342627
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/hamoa-iot-evk-edp.dtso
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&pmk8550_pwm 0 5000000>;
+ enable-gpios = <&pmc8380_3_gpios 4 GPIO_ACTIVE_HIGH>;
+ power-supply = <&vreg_edp_bl>;
+
+ pinctrl-0 = <&edp_bl_en>, <&edp_bl_pwm>;
+ pinctrl-names = "default";
+ };
+
+ vreg_edp_3p3: regulator-edp-3p3 {
+ compatible = "regulator-fixed";
+
+ regulator-name = "VREG_EDP_3P3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+
+ gpio = <&tlmm 70 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+
+ pinctrl-0 = <&edp_reg_en>;
+ pinctrl-names = "default";
+
+ regulator-boot-on;
+ };
+
+ vreg_edp_bl: regulator-edp-bl {
+ compatible = "regulator-fixed";
+
+ regulator-name = "VBL9";
+ regulator-min-microvolt = <3600000>;
+ regulator-max-microvolt = <3600000>;
+
+ gpio = <&pmc8380_3_gpios 10 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+
+ pinctrl-0 = <&edp_bl_reg_en>;
+ pinctrl-names = "default";
+
+ regulator-boot-on;
+ };
+};
+
+&mdss_dp3 {
+ /delete-property/ #sound-dai-cells;
+
+ pinctrl-0 = <&edp0_hpd_default>;
+ pinctrl-names = "default";
+
+ status = "okay";
+
+ aux-bus {
+ panel {
+ compatible = "edp-panel";
+
+ backlight = <&backlight>;
+ power-supply = <&vreg_edp_3p3>;
+
+ port {
+ edp_panel_in: endpoint {
+ remote-endpoint = <&mdss_dp3_out>;
+ };
+ };
+ };
+ };
+};
+
+&mdss_dp3_out {
+ data-lanes = <0 1 2 3>;
+ link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
+
+ remote-endpoint = <&edp_panel_in>;
+};
+
+&mdss_dp3_phy {
+ vdda-phy-supply = <&vreg_l3j_0p8>;
+ vdda-pll-supply = <&vreg_l2j_1p2>;
+
+ status = "okay";
+};
+
+&pmc8380_3_gpios {
+ edp_bl_en: edp-bl-en-state {
+ pins = "gpio4";
+ function = "normal";
+ power-source = <1>;
+ input-disable;
+ output-enable;
+ };
+
+ edp_bl_reg_en: edp-bl-reg-en-state {
+ pins = "gpio10";
+ function = "normal";
+ };
+};
+
+&pmk8550_gpios {
+ edp_bl_pwm: edp-bl-pwm-state {
+ pins = "gpio5";
+ function = "func3";
+ };
+};
+
+&pmk8550_pwm {
+ status = "okay";
+};
+
+&tlmm {
+ edp_reg_en: edp-reg-en-state {
+ pins = "gpio70";
+ function = "gpio";
+ drive-strength = <16>;
+ bias-disable;
+ };
+};
diff --git a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts b/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
index 9fa86bb6438e..78cefd5391b1 100644
--- a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
+++ b/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
@@ -19,16 +19,6 @@ aliases {
serial1 = &uart14;
};
- backlight: backlight {
- compatible = "pwm-backlight";
- pwms = <&pmk8550_pwm 0 5000000>;
- enable-gpios = <&pmc8380_3_gpios 4 GPIO_ACTIVE_HIGH>;
- power-supply = <&vreg_edp_bl>;
-
- pinctrl-0 = <&edp_bl_en>, <&edp_bl_pwm>;
- pinctrl-names = "default";
- };
-
clocks {
mcp2518fd_osc: clock-40000000 {
compatible = "fixed-clock";
@@ -213,38 +203,6 @@ pmic_glink_ss2_con_sbu_in: endpoint {
};
};
- vreg_edp_3p3: regulator-edp-3p3 {
- compatible = "regulator-fixed";
-
- regulator-name = "VREG_EDP_3P3";
- regulator-min-microvolt = <3300000>;
- regulator-max-microvolt = <3300000>;
-
- gpio = <&tlmm 70 GPIO_ACTIVE_HIGH>;
- enable-active-high;
-
- pinctrl-0 = <&edp_reg_en>;
- pinctrl-names = "default";
-
- regulator-boot-on;
- };
-
- vreg_edp_bl: regulator-edp-bl {
- compatible = "regulator-fixed";
-
- regulator-name = "VBL9";
- regulator-min-microvolt = <3600000>;
- regulator-max-microvolt = <3600000>;
-
- gpio = <&pmc8380_3_gpios 10 GPIO_ACTIVE_HIGH>;
- enable-active-high;
-
- pinctrl-0 = <&edp_bl_reg_en>;
- pinctrl-names = "default";
-
- regulator-boot-on;
- };
-
vreg_nvme: regulator-nvme {
compatible = "regulator-fixed";
@@ -974,44 +932,6 @@ &mdss_dp2_out {
link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
};
-&mdss_dp3 {
- /delete-property/ #sound-dai-cells;
-
- pinctrl-0 = <&edp0_hpd_default>;
- pinctrl-names = "default";
-
- status = "okay";
-
- aux-bus {
- panel {
- compatible = "edp-panel";
-
- backlight = <&backlight>;
- power-supply = <&vreg_edp_3p3>;
-
- port {
- edp_panel_in: endpoint {
- remote-endpoint = <&mdss_dp3_out>;
- };
- };
- };
- };
-};
-
-&mdss_dp3_out {
- data-lanes = <0 1 2 3>;
- link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
-
- remote-endpoint = <&edp_panel_in>;
-};
-
-&mdss_dp3_phy {
- vdda-phy-supply = <&vreg_l3j_0p8>;
- vdda-pll-supply = <&vreg_l2j_1p2>;
-
- status = "okay";
-};
-
&pcie3_port0 {
vpcie12v-supply = <&vreg_pcie_12v>;
vpcie3v3-supply = <&vreg_pcie_3v3>;
@@ -1140,19 +1060,6 @@ led@2 {
};
&pmc8380_3_gpios {
- edp_bl_en: edp-bl-en-state {
- pins = "gpio4";
- function = "normal";
- power-source = <1>;
- input-disable;
- output-enable;
- };
-
- edp_bl_reg_en: edp-bl-reg-en-state {
- pins = "gpio10";
- function = "normal";
- };
-
pm_sde7_aux_3p3_en: pcie-aux-3p3-default-state {
pins = "gpio8";
function = "normal";
@@ -1181,13 +1088,6 @@ usb0_pwr_1p15_reg_en: usb0-pwr-1p15-reg-en-state {
};
};
-&pmk8550_gpios {
- edp_bl_pwm: edp-bl-pwm-state {
- pins = "gpio5";
- function = "func3";
- };
-};
-
&pmk8550_pwm {
status = "okay";
};
@@ -1357,13 +1257,6 @@ ec_int_n_default: ec-int-n-state {
bias-disable;
};
- edp_reg_en: edp-reg-en-state {
- pins = "gpio70";
- function = "gpio";
- drive-strength = <16>;
- bias-disable;
- };
-
eusb3_reset_n: eusb3-reset-n-state {
pins = "gpio6";
function = "gpio";
--
2.54.0