diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0240-Add-support-for-the-Digital-Dreamtime-Akkordion-musi.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0240-Add-support-for-the-Digital-Dreamtime-Akkordion-musi.patch | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0240-Add-support-for-the-Digital-Dreamtime-Akkordion-musi.patch b/target/linux/brcm2708/patches-4.4/0240-Add-support-for-the-Digital-Dreamtime-Akkordion-musi.patch new file mode 100644 index 0000000000..4f9a15b9bf --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0240-Add-support-for-the-Digital-Dreamtime-Akkordion-musi.patch @@ -0,0 +1,105 @@ +From ddef7a853652982c2796db7f43d067d8487bc7e9 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 240/304] 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?"; ++ }; ++}; |