From 0d2a0f4f4c00c958fb6e7a2673adbe51c2a932f2 Mon Sep 17 00:00:00 2001 From: b-ak Date: Thu, 3 Jan 2019 00:29:14 +0530 Subject: [PATCH 300/806] BCM270X: Adding device tree support for AudioSense-Pi add-on soundcard Device tree overlay for AudioSense-Pi card. To enable support for the hardware add the following line to the RPi /boot/config.txt: dtoverlay=audiosense-pi More documentation @ arch/arm/boot/dts/overlays/README Signed-off-by: b-ak --- arch/arm/boot/dts/overlays/Makefile | 1 + arch/arm/boot/dts/overlays/README | 8 ++ .../dts/overlays/audiosense-pi-overlay.dts | 82 +++++++++++++++++++ 3 files changed, 91 insertions(+) create mode 100644 arch/arm/boot/dts/overlays/audiosense-pi-overlay.dts --- a/arch/arm/boot/dts/overlays/Makefile +++ b/arch/arm/boot/dts/overlays/Makefile @@ -20,6 +20,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ audioinjector-addons.dtbo \ audioinjector-ultra.dtbo \ audioinjector-wm8731-audio.dtbo \ + audiosense-pi.dtbo \ audremap.dtbo \ balena-fin.dtbo \ bmp085_i2c-sensor.dtbo \ --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -453,6 +453,14 @@ Load: dtoverlay=audioinjector-wm8731-a Params: +Name: audiosense-pi +Info: Configures the audiosense-pi add on soundcard + For more information refer to + https://gitlab.com/kakar0t/audiosense-pi +Load: dtoverlay=audiosense-pi +Params: + + Name: audremap Info: Switches PWM sound output to pins 12 (Right) & 13 (Left) Load: dtoverlay=audremap,= --- /dev/null +++ b/arch/arm/boot/dts/overlays/audiosense-pi-overlay.dts @@ -0,0 +1,82 @@ +// Definitions for audiosense add on soundcard +/dts-v1/; +/plugin/; +#include +#include + +/ { + compatible = "brcm,bcm2837", "brcm,bcm2836", "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@1 { + target-path = "/"; + __overlay__ { + codec_reg_1v8: codec-reg-1v8 { + compatible = "regulator-fixed"; + regulator-name = "tlv320aic3204_1v8"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-always-on; + }; + }; + }; + + fragment@2 { + target = <&gpio>; + __overlay__ { + codec_rst: codec-rst { + brcm,pins = <26>; + brcm,function = ; + }; + }; + }; + + fragment@3 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + /* audio external oscillator */ + codec_osc: codec_osc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <12000000>; /* 12 MHz */ + }; + + codec: tlv320aic32x4@18 { + #sound-dai-cells = <0>; + compatible = "ti,tlv320aic32x4"; + reg = <0x18>; + + clocks = <&codec_osc>; + clock-names = "mclk"; + + iov-supply = <&vdd_3v3_reg>; + ldoin-supply = <&vdd_3v3_reg>; + + gpio-controller; + #gpio-cells = <2>; + reset-gpios = <&gpio 26 GPIO_ACTIVE_HIGH>; + + status = "okay"; + }; + }; + }; + + fragment@4 { + target = <&sound>; + __overlay__ { + compatible = "as,audiosense-pi"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; +};