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128 lines
3.4 KiB
128 lines
3.4 KiB
From 36a2db8647b19b0c8576a10ab787b14098049f9b Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 28 Feb 2018 21:29:42 +0000
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Subject: [PATCH 235/454] overlays: Add overlay for PiBell soundcard
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This overlay is presented as another example of using the simple card
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driver.
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See: https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=99784&p=1279490#p1278971
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 7 ++
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arch/arm/boot/dts/overlays/pibell-overlay.dts | 81 +++++++++++++++++++
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3 files changed, 89 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/pibell-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -76,6 +76,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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pi3-disable-bt.dtbo \
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pi3-disable-wifi.dtbo \
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pi3-miniuart-bt.dtbo \
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+ pibell.dtbo \
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piscreen.dtbo \
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piscreen2r.dtbo \
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pisound.dtbo \
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -1182,6 +1182,13 @@ Load: dtoverlay=pi3-miniuart-bt
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Params: <None>
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+Name: pibell
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+Info: Configures the pibell audio card.
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+Load: dtoverlay=pibell,<param>=<val>
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+Params: alsaname Set the name as it appears in ALSA (default
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+ "PiBell")
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+
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+
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Name: piscreen
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Info: PiScreen display by OzzMaker.com
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Load: dtoverlay=piscreen,<param>=<val>
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/pibell-overlay.dts
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@@ -0,0 +1,81 @@
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2708";
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+
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+ fragment@0 {
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+ target-path = "/";
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+ __overlay__ {
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+ codec_out: spdif-transmitter {
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+ #address-cells = <0>;
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+ #size-cells = <0>;
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+ #sound-dai-cells = <0>;
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+ compatible = "linux,spdif-dit";
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+ status = "okay";
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+ };
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+
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+ codec_in: card-codec {
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+ #sound-dai-cells = <0>;
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+ compatible = "invensense,ics43432";
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+ status = "okay";
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+ };
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&i2s>;
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+ __overlay__ {
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+ #sound-dai-cells = <0>;
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&sound>;
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+ snd: __overlay__ {
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+ compatible = "simple-audio-card";
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+ simple-audio-card,name = "PiBell";
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+
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+ status="okay";
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+
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+ capture_link: simple-audio-card,dai-link@0 {
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+ format = "i2s";
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+
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+ r_cpu_dai: cpu {
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+ sound-dai = <&i2s>;
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+
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+/* example TDM slot configuration
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+ dai-tdm-slot-num = <2>;
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+ dai-tdm-slot-width = <32>;
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+*/
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+ };
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+
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+ r_codec_dai: codec {
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+ sound-dai = <&codec_in>;
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+ };
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+ };
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+
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+ playback_link: simple-audio-card,dai-link@1 {
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+ format = "i2s";
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+
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+ p_cpu_dai: cpu {
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+ sound-dai = <&i2s>;
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+
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+/* example TDM slot configuration
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+ dai-tdm-slot-num = <2>;
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+ dai-tdm-slot-width = <32>;
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+*/
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+ };
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+
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+ p_codec_dai: codec {
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+ sound-dai = <&codec_out>;
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+ };
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+ };
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+ };
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+ };
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+
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+ __overrides__ {
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+ alsaname = <&snd>, "simple-audio-card,name";
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+ };
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+};
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