The Apalis iMX6 modules use a simple DAC using resistor ladders
to convert parallel RGB to VGA. Add support for this output using
the dumb VGA driver.
Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
---
arch/arm/boot/dts/imx6q-apalis-eval.dts | 28 +++++++++++++
arch/arm/boot/dts/imx6qdl-apalis.dtsi | 52 +++++++++++++++++++++++++
2 files changed, 80 insertions(+)
diff --git a/arch/arm/boot/dts/imx6q-apalis-eval.dts b/arch/arm/boot/dts/imx6q-apalis-eval.dts
index 707ac9a46115..ae07b3a105ef 100644
--- a/arch/arm/boot/dts/imx6q-apalis-eval.dts
+++ b/arch/arm/boot/dts/imx6q-apalis-eval.dts
@@ -140,6 +140,16 @@
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
+
+ vga {
+ compatible = "vga-connector";
+
+ port {
+ vga_con_in: endpoint {
+ remote-endpoint = <&vga_bridge_out>;
+ };
+ };
+ };
};
&backlight {
@@ -281,6 +291,24 @@
status = "okay";
};
+&vgabridge {
+ status = "okay";
+
+ ports {
+ port@1 {
+ reg = <1>;
+
+ vga_bridge_out: endpoint {
+ remote-endpoint = <&vga_con_in>;
+ };
+ };
+ };
+};
+
+&vgadisplay {
+ status = "okay";
+};
+
&iomuxc {
/*
* Mux the Apalis GPIOs
diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
index 05f07ea3e8c8..e8d0407e3e18 100644
--- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
@@ -138,6 +138,54 @@
spdif-out;
status = "disabled";
};
+
+ vgabridge: bridge {
+ compatible = "dumb-vga-dac";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ de-active = <0>;
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ vga_bridge_in: endpoint {
+ remote-endpoint = <&vga_display_out>;
+ };
+ };
+ };
+ };
+
+ vgadisplay: display@di0 {
+ compatible = "fsl,imx-parallel-display";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interface-pix-fmt = "rgb565";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_ipu2_vdac>;
+ status = "disabled";
+
+ port@0 {
+ reg = <0>;
+
+ vga_display_in: endpoint {
+ remote-endpoint = <&ipu2_di0_disp0>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ vga_display_out: endpoint {
+ remote-endpoint = <&vga_bridge_in>;
+ };
+ };
+ };
+
};
&audmux {
@@ -373,6 +421,10 @@
status = "disabled";
};
+&ipu2_di0_disp0 {
+ remote-endpoint = <&vga_display_in>;
+};
+
&pwm1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pwm1>;
--
2.18.0
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