113 lines
2.9 KiB
Diff
113 lines
2.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Icenowy Zheng <icenowy@aosc.io>
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Date: Fri, 26 Jun 2020 02:56:00 +0200
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Subject: [PATCH] arm64: dts: sun50i-a64-pinephone: Enable LCD support on
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PinePhone
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PinePhone uses PWM backlight and a XBD599 LCD panel over DSI for
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display.
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Backlight levels curve was optimized by Martijn Braam using a
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lux meter.
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Add its device nodes.
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Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
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Signed-off-by: Martijn Braam <martijn@brixit.nl>
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Signed-off-by: Ondrej Jirman <megous@megous.com>
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---
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.../allwinner/sun50i-a64-pinephone-1.1.dts | 19 ++++++++++
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.../dts/allwinner/sun50i-a64-pinephone.dtsi | 35 +++++++++++++++++++
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2 files changed, 54 insertions(+)
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diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
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index 06a775c41664..3e99a87e9ce5 100644
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--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
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+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
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@@ -9,3 +9,22 @@ / {
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model = "Pine64 PinePhone Braveheart (1.1)";
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compatible = "pine64,pinephone-1.1", "allwinner,sun50i-a64";
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};
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+
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+&backlight {
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+ power-supply = <®_ldo_io0>;
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+ /*
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+ * PWM backlight circuit on this PinePhone revision was changed since
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+ * 1.0, and the lowest PWM duty cycle that doesn't lead to backlight
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+ * being off is around 20%. Duty cycle for the lowest brightness level
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+ * also varries quite a bit between individual boards, so the lowest
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+ * value here was chosen as a safe default.
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+ */
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+ brightness-levels = <
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+ 774 793 814 842
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+ 882 935 1003 1088
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+ 1192 1316 1462 1633
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+ 1830 2054 2309 2596
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+ 2916 3271 3664 4096>;
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+ num-interpolated-steps = <50>;
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+ default-brightness-level = <400>;
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+};
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diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
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index cefda145c3c9..85a7aa5efd32 100644
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--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
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+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
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@@ -16,6 +16,13 @@ aliases {
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serial0 = &uart0;
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};
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+ backlight: backlight {
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+ compatible = "pwm-backlight";
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+ pwms = <&r_pwm 0 50000 PWM_POLARITY_INVERTED>;
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+ enable-gpios = <&pio 7 10 GPIO_ACTIVE_HIGH>; /* PH10 */
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+ /* Backlight configuration differs per PinePhone revision. */
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+ };
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+
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chosen {
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stdout-path = "serial0:115200n8";
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};
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@@ -84,6 +91,30 @@ &dai {
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status = "okay";
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};
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+&de {
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+ status = "okay";
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+};
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+
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+&dphy {
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+ status = "okay";
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+};
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+
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+&dsi {
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+ vcc-dsi-supply = <®_dldo1>;
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ panel@0 {
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+ compatible = "xingbangda,xbd599";
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+ reg = <0>;
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+ reset-gpios = <&pio 3 23 GPIO_ACTIVE_LOW>; /* PD23 */
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+ iovcc-supply = <®_dldo2>;
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+ vcc-supply = <®_ldo_io0>;
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+ backlight = <&backlight>;
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+ };
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+};
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+
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&ehci0 {
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status = "okay";
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};
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@@ -188,6 +219,10 @@ &r_pio {
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*/
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};
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+&r_pwm {
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+ status = "okay";
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+};
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+
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&r_rsb {
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status = "okay";
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--
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2.26.2
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