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openwrt/target/linux/brcm2708/patches-4.4/0305-BCM270X_DT-Sound-DT-ad...

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From 18530eb2ce1219fb8e11c7ffbeb0a8ff73a7cabf Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 26 Apr 2016 10:44:59 +0100
Subject: [PATCH] BCM270X_DT: Sound DT adjustments for Dynamic DT
There are a number of issues when loading and unloading overlays for
sound cards:
1) The "sound" and "audio" nodes must be children of a bus node, such
as "/soc", otherwise the DT changes don't result in platform devices
being created and deleted.
2) The "/sound" node must have a "disabled" status property, otherwise
setting the status to "okay" won't be detected.
3) ALSA doesn't like having components unloaded under its feet, and it
is easy to deadlock or crash. Ordering the overlay fragments so that
the sound card appears last avoids this problem.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/boot/dts/bcm2708_common.dtsi | 23 +++++++++---------
.../dts/overlays/akkordion-iqdacplus-overlay.dts | 28 +++++++++++-----------
.../boot/dts/overlays/boomberry-dac-overlay.dts | 22 ++++++++---------
.../boot/dts/overlays/boomberry-digi-overlay.dts | 20 ++++++++--------
.../boot/dts/overlays/hifiberry-amp-overlay.dts | 20 ++++++++--------
.../boot/dts/overlays/hifiberry-dac-overlay.dts | 22 ++++++++---------
.../dts/overlays/hifiberry-dacplus-overlay.dts | 22 ++++++++---------
.../boot/dts/overlays/hifiberry-digi-overlay.dts | 20 ++++++++--------
arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts | 20 ++++++++--------
.../boot/dts/overlays/iqaudio-dacplus-overlay.dts | 22 ++++++++---------
arch/arm/boot/dts/overlays/raspidac3-overlay.dts | 20 ++++++++--------
arch/arm/boot/dts/overlays/rpi-dac-overlay.dts | 22 ++++++++---------
arch/arm/boot/dts/overlays/rpi-proto-overlay.dts | 20 ++++++++--------
13 files changed, 141 insertions(+), 140 deletions(-)
--- a/arch/arm/boot/dts/bcm2708_common.dtsi
+++ b/arch/arm/boot/dts/bcm2708_common.dtsi
@@ -34,17 +34,6 @@
clocks = &clocks;
};
- /* Onboard audio */
- audio: audio {
- compatible = "brcm,bcm2835-audio";
- brcm,pwm-channels = <8>;
- status = "disabled";
- };
-
- /* External sound card */
- sound: sound {
- };
-
soc: soc {
compatible = "simple-bus";
#address-cells = <1>;
@@ -313,6 +302,18 @@
compatible = "brcm,bcm2835-thermal";
firmware = <&firmware>;
};
+
+ /* Onboard audio */
+ audio: audio {
+ compatible = "brcm,bcm2835-audio";
+ brcm,pwm-channels = <8>;
+ status = "disabled";
+ };
+
+ /* External sound card */
+ sound: sound {
+ status = "disabled";
+ };
};
clocks: clocks {
--- a/arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts
+++ b/arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts
@@ -6,25 +6,13 @@
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 {
+ fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -40,7 +28,19 @@
};
};
+ fragment@2 {
+ target = <&sound>;
+ frag2: __overlay__ {
+ compatible = "iqaudio,iqaudio-dac";
+ card_name = "Akkordion";
+ dai_name = "IQaudIO DAC";
+ dai_stream_name = "IQaudIO DAC HiFi";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
__overrides__ {
- 24db_digital_gain = <&frag0>,"iqaudio,24db_digital_gain?";
+ 24db_digital_gain = <&frag2>,"iqaudio,24db_digital_gain?";
};
};
--- a/arch/arm/boot/dts/overlays/boomberry-dac-overlay.dts
+++ b/arch/arm/boot/dts/overlays/boomberry-dac-overlay.dts
@@ -6,22 +6,13 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- frag0: __overlay__ {
- compatible = "boomberry,boomberry-dac";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
+ fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -37,7 +28,16 @@
};
};
+ fragment@2 {
+ target = <&sound>;
+ frag2: __overlay__ {
+ compatible = "boomberry,boomberry-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
__overrides__ {
- 24db_digital_gain = <&frag0>,"boomberry,24db_digital_gain?";
+ 24db_digital_gain = <&frag2>,"boomberry,24db_digital_gain?";
};
};
--- a/arch/arm/boot/dts/overlays/boomberry-digi-overlay.dts
+++ b/arch/arm/boot/dts/overlays/boomberry-digi-overlay.dts
@@ -6,22 +6,13 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- __overlay__ {
- compatible = "boomberry,boomberry-digi";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
+ fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -36,4 +27,13 @@
};
};
};
+
+ fragment@2 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "boomberry,boomberry-digi";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
};
--- a/arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts
+++ b/arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts
@@ -6,22 +6,13 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- __overlay__ {
- compatible = "hifiberry,hifiberry-amp";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
+ fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -36,4 +27,13 @@
};
};
};
+
+ fragment@2 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-amp";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
};
--- a/arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
+++ b/arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
@@ -6,23 +6,14 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- __overlay__ {
- compatible = "hifiberry,hifiberry-dac";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
- target-path = "/";
+ fragment@1 {
+ target = <&soc>;
__overlay__ {
pcm5102a-codec {
#sound-dai-cells = <0>;
@@ -31,4 +22,13 @@
};
};
};
+
+ fragment@2 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
};
--- a/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
+++ b/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
@@ -16,22 +16,13 @@
};
fragment@1 {
- target = <&sound>;
- frag1: __overlay__ {
- compatible = "hifiberry,hifiberry-dacplus";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@2 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@3 {
+ fragment@2 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -48,7 +39,16 @@
};
};
+ fragment@3 {
+ target = <&sound>;
+ frag3: __overlay__ {
+ compatible = "hifiberry,hifiberry-dacplus";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
__overrides__ {
- 24db_digital_gain = <&frag1>,"hifiberry,24db_digital_gain?";
+ 24db_digital_gain = <&frag3>,"hifiberry,24db_digital_gain?";
};
};
--- a/arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts
+++ b/arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts
@@ -6,22 +6,13 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- __overlay__ {
- compatible = "hifiberry,hifiberry-digi";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
+ fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -36,4 +27,13 @@
};
};
};
+
+ fragment@2 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-digi";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
};
--- a/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
+++ b/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
@@ -6,22 +6,13 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- __overlay__ {
- compatible = "iqaudio,iqaudio-dac";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
+ fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -36,4 +27,13 @@
};
};
};
+
+ fragment@2 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "iqaudio,iqaudio-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
};
--- a/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
+++ b/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
@@ -6,22 +6,13 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- frag0: __overlay__ {
- compatible = "iqaudio,iqaudio-dac";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
+ fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -37,7 +28,16 @@
};
};
+ fragment@2 {
+ target = <&sound>;
+ frag2: __overlay__ {
+ compatible = "iqaudio,iqaudio-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
__overrides__ {
- 24db_digital_gain = <&frag0>,"iqaudio,24db_digital_gain?";
+ 24db_digital_gain = <&frag2>,"iqaudio,24db_digital_gain?";
};
};
--- a/arch/arm/boot/dts/overlays/raspidac3-overlay.dts
+++ b/arch/arm/boot/dts/overlays/raspidac3-overlay.dts
@@ -6,22 +6,13 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- __overlay__ {
- compatible = "jg,raspidacv3";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
+ fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -42,4 +33,13 @@
};
};
};
+
+ fragment@2 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "jg,raspidacv3";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
};
--- a/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
+++ b/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
@@ -6,23 +6,14 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- __overlay__ {
- compatible = "rpi,rpi-dac";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
- target-path = "/";
+ fragment@1 {
+ target = <&soc>;
__overlay__ {
pcm1794a-codec {
#sound-dai-cells = <0>;
@@ -31,4 +22,13 @@
};
};
};
+
+ fragment@2 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "rpi,rpi-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
};
--- a/arch/arm/boot/dts/overlays/rpi-proto-overlay.dts
+++ b/arch/arm/boot/dts/overlays/rpi-proto-overlay.dts
@@ -6,22 +6,13 @@
compatible = "brcm,bcm2708";
fragment@0 {
- target = <&sound>;
- __overlay__ {
- compatible = "rpi,rpi-proto";
- i2s-controller = <&i2s>;
- status = "okay";
- };
- };
-
- fragment@1 {
target = <&i2s>;
__overlay__ {
status = "okay";
};
};
- fragment@2 {
+ fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
@@ -36,4 +27,13 @@
};
};
};
+
+ fragment@2 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "rpi,rpi-proto";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
};
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