From dbb6d86415353980e312c64d12cd337b1abeee74 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Thu, 15 Mar 2018 19:41:36 +0800 Subject: [PATCH] ARM: dts: sun9i: cubieboard4: Enable VGA display output The Cubieboard4 has a dumb VGA DAC connected to the output of LCD0, providing VGA output through the onboard VGA connector. The DDC lines are connected to i2c3. The VGA DAC is a GM7123, which is compatible with Analog Devices' ADV7123, except it only takes 3.3V power, and has a lower standby power consumption. The datasheet found online lists "Chengdu GoldTel Electronical Technology Co., Ltd." as its designer. The company changed its name in 2014 to "Chengdu Corpro Technology Co., Ltd.". Their website lists similar ICs, but not actually the GM7123. Enable the display pipeline with the VGA DAC and connector, and i2c3 for DDC. Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard --- arch/arm/boot/dts/sun9i-a80-cubieboard4.dts | 68 +++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts b/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts index 4024639..126bbf8 100644 --- a/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts +++ b/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts @@ -74,6 +74,52 @@ }; }; + vga-connector { + compatible = "vga-connector"; + label = "vga"; + ddc-i2c-bus = <&i2c3>; + + port { + vga_con_in: endpoint { + remote-endpoint = <&vga_dac_out>; + }; + }; + }; + + vga-dac { + compatible = "corpro,gm7123", "adi,adv7123", "dumb-vga-dac"; + vdd-supply = <®_dcdc1>; + #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>; + }; + }; + }; + }; + wifi_pwrseq: wifi-pwrseq { compatible = "mmc-pwrseq-simple"; clocks = <&ac100_rtc 1>; @@ -83,6 +129,16 @@ }; }; +&de { + status = "okay"; +}; + +&i2c3 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c3_pins>; + status = "okay"; +}; + &mmc0 { pinctrl-names = "default"; pinctrl-0 = <&mmc0_pins>; @@ -403,6 +459,18 @@ #include "axp809.dtsi" +&tcon0 { + pinctrl-names = "default"; + pinctrl-0 = <&lcd0_rgb888_pins>; +}; + +&tcon0_out { + tcon0_out_vga: endpoint@0 { + reg = <0>; + remote-endpoint = <&vga_dac_in>; + }; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_ph_pins>; -- 2.7.4