mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
133 lines
4.5 KiB
Diff
133 lines
4.5 KiB
Diff
From d689ccf52fb81664b7eccb91dc05a93d64ba793c Mon Sep 17 00:00:00 2001
|
|
From: Joerg Schambacher <joerg@i2audio.com>
|
|
Date: Fri, 29 Jan 2021 08:26:44 +0100
|
|
Subject: [PATCH] Adds the DT-overlays to support Hifiberry AMP100
|
|
|
|
Adds new DT-overlay to control AMP100.
|
|
|
|
Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
|
|
---
|
|
arch/arm/boot/dts/overlays/Makefile | 1 +
|
|
arch/arm/boot/dts/overlays/README | 30 ++++++++-
|
|
.../dts/overlays/hifiberry-amp100-overlay.dts | 64 +++++++++++++++++++
|
|
3 files changed, 94 insertions(+), 1 deletion(-)
|
|
create mode 100644 arch/arm/boot/dts/overlays/hifiberry-amp100-overlay.dts
|
|
|
|
--- a/arch/arm/boot/dts/overlays/Makefile
|
|
+++ b/arch/arm/boot/dts/overlays/Makefile
|
|
@@ -60,6 +60,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
|
|
hd44780-lcd.dtbo \
|
|
hdmi-backlight-hwhack-gpio.dtbo \
|
|
hifiberry-amp.dtbo \
|
|
+ hifiberry-amp100.dtbo \
|
|
hifiberry-dac.dtbo \
|
|
hifiberry-dacplus.dtbo \
|
|
hifiberry-dacplusadc.dtbo \
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -1045,8 +1045,36 @@ Load: dtoverlay=hifiberry-amp
|
|
Params: <None>
|
|
|
|
|
|
+Name: hifiberry-amp100
|
|
+Info: Configures the HifiBerry AMP100 audio card
|
|
+Load: dtoverlay=hifiberry-amp100,<param>=<val>
|
|
+Params: 24db_digital_gain Allow gain to be applied via the PCM512x codec
|
|
+ Digital volume control. Enable with
|
|
+ "dtoverlay=hifiberry-amp100,24db_digital_gain"
|
|
+ (The default behaviour is that the Digital
|
|
+ volume control is limited to a maximum of
|
|
+ 0dB. ie. it can attenuate but not provide
|
|
+ gain. For most users, this will be desired
|
|
+ as it will prevent clipping. By appending
|
|
+ the 24dB_digital_gain parameter, the Digital
|
|
+ volume control will allow up to 24dB of
|
|
+ gain. If this parameter is enabled, it is the
|
|
+ responsibility of the user to ensure that
|
|
+ the Digital volume control is set to a value
|
|
+ that does not result in clipping/distortion!)
|
|
+ slave Force DAC+ Pro into slave mode, using Pi as
|
|
+ master for bit clock and frame clock.
|
|
+ leds_off If set to 'true' the onboard indicator LEDs
|
|
+ are switched off at all times.
|
|
+ auto_mute If set to 'true' the amplifier is automatically
|
|
+ muted when the DAC is not playing.
|
|
+ mute_ext_ctl The amplifier's HW mute control is enabled
|
|
+ in ALSA mixer and set to <val>.
|
|
+ Will be overwritten by ALSA user settings.
|
|
+
|
|
+
|
|
Name: hifiberry-dac
|
|
-Info: Configures the HifiBerry DAC audio card
|
|
+Info: Configures the HifiBerry DAC audio cards
|
|
Load: dtoverlay=hifiberry-dac
|
|
Params: <None>
|
|
|
|
--- /dev/null
|
|
+++ b/arch/arm/boot/dts/overlays/hifiberry-amp100-overlay.dts
|
|
@@ -0,0 +1,64 @@
|
|
+// Definitions for HiFiBerry AMP100
|
|
+/dts-v1/;
|
|
+/plugin/;
|
|
+
|
|
+/ {
|
|
+ compatible = "brcm,bcm2835";
|
|
+
|
|
+ fragment@0 {
|
|
+ target-path = "/";
|
|
+ __overlay__ {
|
|
+ dacpro_osc: dacpro_osc {
|
|
+ compatible = "hifiberry,dacpro-clk";
|
|
+ #clock-cells = <0>;
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@1 {
|
|
+ target = <&i2s>;
|
|
+ __overlay__ {
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@2 {
|
|
+ target = <&i2c1>;
|
|
+ __overlay__ {
|
|
+ #address-cells = <1>;
|
|
+ #size-cells = <0>;
|
|
+ status = "okay";
|
|
+
|
|
+ pcm5122@4d {
|
|
+ #sound-dai-cells = <0>;
|
|
+ compatible = "ti,pcm5122";
|
|
+ reg = <0x4d>;
|
|
+ clocks = <&dacpro_osc>;
|
|
+ AVDD-supply = <&vdd_3v3_reg>;
|
|
+ DVDD-supply = <&vdd_3v3_reg>;
|
|
+ CPVDD-supply = <&vdd_3v3_reg>;
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@3 {
|
|
+ target = <&sound>;
|
|
+ hifiberry_dacplus: __overlay__ {
|
|
+ compatible = "hifiberry,hifiberry-dacplus";
|
|
+ i2s-controller = <&i2s>;
|
|
+ status = "okay";
|
|
+ mute-gpio = <&gpio 4 0>;
|
|
+ reset-gpio = <&gpio 17 0x11>;
|
|
+ };
|
|
+ };
|
|
+
|
|
+ __overrides__ {
|
|
+ 24db_digital_gain =
|
|
+ <&hifiberry_dacplus>,"hifiberry,24db_digital_gain?";
|
|
+ slave = <&hifiberry_dacplus>,"hifiberry-dacplus,slave?";
|
|
+ leds_off = <&hifiberry_dacplus>,"hifiberry-dacplus,leds_off?";
|
|
+ mute_ext_ctl = <&hifiberry_dacplus>,"hifiberry-dacplus,mute_ext_ctl:0";
|
|
+ auto_mute = <&hifiberry_dacplus>,"hifiberry-dacplus,auto_mute?";
|
|
+ };
|
|
+};
|