[PATCH 2/2] arm64: dts: rockchip: Add headphone amplifier to Orange Pi 5 Pro

[Kel Modderman <kelvmod@gmail.com>]

The Orange Pi 5 Pro routes the ES8388 LOUT1/ROUT1 to the headphone jack
through an amplifier enabled by GPIO4_B5. Without it the jack is silent
apart from faint leakage on signal peaks.

Describe the amplifier as a simple-audio-amplifier aux device and route
the headphone path through it.

Fixes: f47af8ebbe53 ("arm64: dts: rockchip: Add Orange Pi 5 Pro board support")
Signed-off-by: Kel Modderman <kelvmod@gmail.com>
---
 .../boot/dts/rockchip/rk3588s-orangepi-5-pro.dts    | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-orangepi-5-pro.dts b/arch/arm64/boot/dts/rockchip/rk3588s-orangepi-5-pro.dts
index 783675337a..f5e43dfe1e 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588s-orangepi-5-pro.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588s-orangepi-5-pro.dts
@@ -18,13 +18,16 @@ analog-sound {
 		compatible = "simple-audio-card";
 		pinctrl-names = "default";
 		pinctrl-0 = <&hp_detect>;
+		simple-audio-card,aux-devs = <&headphone_amp>;
 		simple-audio-card,format = "i2s";
 		simple-audio-card,hp-det-gpios = <&gpio1 RK_PD5 GPIO_ACTIVE_HIGH>;
 		simple-audio-card,mclk-fs = <256>;
 		simple-audio-card,name = "rockchip,es8388";
 		simple-audio-card,routing =
-			"Headphones", "LOUT1",
-			"Headphones", "ROUT1",
+			"Headphones", "Headphones Amp OUTL",
+			"Headphones", "Headphones Amp OUTR",
+			"Headphones Amp INL", "LOUT1",
+			"Headphones Amp INR", "ROUT1",
 			"LINPUT1", "Microphone Jack",
 			"RINPUT1", "Microphone Jack",
 			"LINPUT2", "Onboard Microphone",
@@ -44,6 +47,14 @@ simple-audio-card,codec {
 		};
 	};
 
+	headphone_amp: headphone-amp {
+		compatible = "simple-audio-amplifier";
+		enable-gpios = <&gpio4 RK_PB5 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&headphone_amp_en>;
+		sound-name-prefix = "Headphones Amp";
+	};
+
 	pwm-leds {
 		compatible = "pwm-leds";
 
@@ -233,6 +244,12 @@ pcie2_2_rst: pcie2-2-rst {
 		};
 	};
 
+	sound {
+		headphone_amp_en: headphone-amp-en {
+			rockchip,pins = <4 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	usb {
 		vcc5v0_otg_en: vcc5v0-otg-en {
 			rockchip,pins = <0 RK_PC4 RK_FUNC_GPIO &pcfg_pull_down>;

-- 
2.55.0