The Hummingbird A31 board has a VGA DAC which converts RGB output
from the LCD interface to VGA analog signals.
Add nodes for the VGA DAC, its power supply, and enable this part
of the display pipeline.
Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
arch/arm/boot/dts/sun6i-a31-hummingbird.dts | 76 +++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
b/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
index 9a74637f677f..1ab28b2108fe 100644
--- a/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
+++ b/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
@@ -63,6 +63,62 @@
stdout-path = "serial0:115200n8";
};
+ vga-connector {
+ compatible = "vga-connector";
+
+ port {
+ vga_con_in: endpoint {
+ remote-endpoint = <&vga_dac_out>;
+ };
+ };
+ };
+
+ vga-dac {
+ compatible = "dumb-vga-dac";
+ vdd-supply = <®_vga_3v3>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ vga_dac_in: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&tcon0_out_vga>;
+ };
+ };
+
+ port@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ vga_dac_out: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&vga_con_in>;
+ };
+ };
+ };
+ };
+
+ reg_vga_3v3: vga_3v3_regulator {
+ compatible = "regulator-fixed";
+ pinctrl-names = "default";
+ pinctrl-0 = <&vga_3v3_enable_pin_hummingbird>;
+ regulator-name = "vga-3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ enable-active-high;
+ gpio = <&pio 7 25 GPIO_ACTIVE_HIGH>; /* PH25 */
+ };
+
wifi_pwrseq: wifi_pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&pio 6 10 GPIO_ACTIVE_LOW>; /* PG10 */
@@ -166,6 +222,13 @@
allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
};
+ vga_3v3_enable_pin_hummingbird: vga_3v3_enable_pin {
+ allwinner,pins = "PH25";
+ allwinner,function = "gpio_out";
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+ };
+
wifi_reset_pin_hummingbird: wifi_reset_pin@0 {
allwinner,pins = "PG10";
allwinner,function = "gpio_out";
@@ -245,6 +308,19 @@
status = "okay";
};
+&tcon0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&lcd0_rgb888_pins>;
+ status = "okay";
+};
+
+&tcon0_out {
+ tcon0_out_vga: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&vga_dac_in>;
+ };
+};
+
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_pins_a>;
--
2.9.3
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