You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
105 lines
3.6 KiB
Diff
105 lines
3.6 KiB
Diff
From 00fa941a2c5be22d7ab5034458b1275d108c18bb Mon Sep 17 00:00:00 2001
|
|
From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
|
|
Date: Thu, 14 Apr 2016 01:00:58 +0100
|
|
Subject: [PATCH] Add support for the Digital Dreamtime Akkordion music player.
|
|
|
|
Support the Digital Dreamtime Akkordion using the OEM IQAudIO DAC+ or
|
|
DACZero modules. Set ALSA card name, ("Akkordion"), from dt config.
|
|
|
|
Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
|
|
---
|
|
arch/arm/boot/dts/overlays/Makefile | 1 +
|
|
arch/arm/boot/dts/overlays/README | 20 ++++++++++
|
|
.../dts/overlays/akkordion-iqdacplus-overlay.dts | 46 ++++++++++++++++++++++
|
|
3 files changed, 67 insertions(+)
|
|
create mode 100644 arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts
|
|
|
|
--- a/arch/arm/boot/dts/overlays/Makefile
|
|
+++ b/arch/arm/boot/dts/overlays/Makefile
|
|
@@ -13,6 +13,7 @@ ifeq ($(CONFIG_ARCH_BCM2835),y)
|
|
endif
|
|
|
|
dtbo-$(RPI_DT_OVERLAYS) += ads7846.dtbo
|
|
+dtbo-$(RPI_DT_OVERLAYS) += akkordion-iqdacplus.dtbo
|
|
dtbo-$(RPI_DT_OVERLAYS) += at86rf233.dtbo
|
|
dtbo-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor.dtbo
|
|
dtbo-$(RPI_DT_OVERLAYS) += dpi24.dtbo
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -186,6 +186,26 @@ Params: cs SPI bus
|
|
www.kernel.org/doc/Documentation/devicetree/bindings/input/ads7846.txt
|
|
|
|
|
|
+Name: akkordion-iqdacplus
|
|
+Info: Configures the Digital Dreamtime Akkordion Music Player (based on the
|
|
+ OEM IQAudIO DAC+ or DAC Zero module).
|
|
+Load: dtoverlay=akkordion-iqdacplus,<param>=<val>
|
|
+Params: 24db_digital_gain Allow gain to be applied via the PCM512x codec
|
|
+ Digital volume control. Enable with
|
|
+ dtoverlay=akkordion-iqdacplus,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!)
|
|
+
|
|
+
|
|
Name: at86rf233
|
|
Info: Configures the Atmel AT86RF233 802.15.4 low-power WPAN transceiver,
|
|
connected to spi0.0
|
|
--- /dev/null
|
|
+++ b/arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts
|
|
@@ -0,0 +1,46 @@
|
|
+// Definitions for Digital Dreamtime Akkordion using IQaudIO DAC+ or DACZero
|
|
+/dts-v1/;
|
|
+/plugin/;
|
|
+
|
|
+/ {
|
|
+ compatible = "brcm,bcm2708";
|
|
+
|
|
+ fragment@0 {
|
|
+ target = <&sound>;
|
|
+ frag0: __overlay__ {
|
|
+ compatible = "iqaudio,iqaudio-dac";
|
|
+ card_name = "Akkordion";
|
|
+ dai_name = "IQaudIO DAC";
|
|
+ dai_stream_name = "IQaudIO DAC HiFi";
|
|
+ i2s-controller = <&i2s>;
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@1 {
|
|
+ target = <&i2s>;
|
|
+ __overlay__ {
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+
|
|
+ fragment@2 {
|
|
+ target = <&i2c1>;
|
|
+ __overlay__ {
|
|
+ #address-cells = <1>;
|
|
+ #size-cells = <0>;
|
|
+ status = "okay";
|
|
+
|
|
+ pcm5122@4c {
|
|
+ #sound-dai-cells = <0>;
|
|
+ compatible = "ti,pcm5122";
|
|
+ reg = <0x4c>;
|
|
+ status = "okay";
|
|
+ };
|
|
+ };
|
|
+ };
|
|
+
|
|
+ __overrides__ {
|
|
+ 24db_digital_gain = <&frag0>,"iqaudio,24db_digital_gain?";
|
|
+ };
|
|
+};
|