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Adds a driver for the new series of Studio DAC8x soundcards #7197

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Adds a driver for the new series of Studio DAC8x soundcards #7197

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46afc67
ASoC:Add Hifiberry Studio DAC8x soundcard driver
j-schambacher Jan 15, 2026
08de7c3
dtoverlays:adds overlays for Studio DAC8x soundcard driver
j-schambacher Jan 15, 2026
a60eae6
defconfig: Add Hifiberry Studio DAC8x
j-schambacher Jan 15, 2026
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2 changes: 2 additions & 0 deletions arch/arm/boot/dts/overlays/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -105,6 +105,8 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
hifiberry-dacplushd.dtbo \
hifiberry-digi.dtbo \
hifiberry-digi-pro.dtbo \
hifiberry-studio-dac8x.dtbo \
hifiberry-studio-dac8x-pro.dtbo \
highperi.dtbo \
hy28a.dtbo \
hy28b.dtbo \
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12 changes: 12 additions & 0 deletions arch/arm/boot/dts/overlays/README
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Expand Up @@ -2062,6 +2062,18 @@ Load: dtoverlay=hifiberry-digi-pro
Params: <None>


Name: hifiberry-studio-dac8x
Info: Configures the HifiBerry Studio DAC8x audio card
Load: dtoverlay=hifiberry-studio-dac8x
Params: <None>


Name: hifiberry-studio-dac8x-pro
Info: Configures the HifiBerry Studio DAC8x PRO audio card
Load: dtoverlay=hifiberry-studio-dac8x-pro
Params: <None>


Name: highperi
Info: Enables "High Peripheral" mode
Load: dtoverlay=highperi
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59 changes: 59 additions & 0 deletions arch/arm/boot/dts/overlays/hifiberry-studio-dac8x-overlay.dts
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@@ -0,0 +1,59 @@
// SPDX-License-Identifier: GPL-2.0
// Definitions for HiFiBerry Studio DAC8x soundcard
/dts-v1/;
/plugin/;

/ {
compatible = "brcm,bcm2712";

fragment@0 {
target = <&i2c1>;
__overlay__ {
status = "okay";
};
};

fragment@1 {
target = <&gpio>;
__overlay__ {
rp1_i2s0_dac8x: rp1_i2s0_dac8x {
function = "i2s0";
pins = "gpio18", "gpio19", "gpio20",
"gpio21", "gpio22", "gpio23",
"gpio24", "gpio25", "gpio26",
"gpio27";
bias-disable;
};
};
};

fragment@2 {
target = <&i2s_clk_producer>;
__overlay__ {
pinctrl-names = "default";
pinctrl-0 = <&rp1_i2s0_dac8x>;
status = "okay";
};
};

fragment@3 {
target-path = "/";
__overlay__ {
dummy-codec {
#sound-dai-cells = <0>;
compatible = "snd-soc-dummy";
status = "okay";
};
};
};

fragment@4 {
target = <&sound>;
__overlay__ {
compatible = "hifiberry,hifiberry-studio-dac8x";
i2s-controller = <&i2s_clk_producer>;
status = "okay";
};
};

};
60 changes: 60 additions & 0 deletions arch/arm/boot/dts/overlays/hifiberry-studio-dac8x-pro-overlay.dts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,60 @@
// SPDX-License-Identifier: GPL-2.0
// Definitions for HiFiBerry Studio DAC8x PRO soundcard
/dts-v1/;
/plugin/;

/ {
compatible = "brcm,bcm2712";

fragment@0 {
target = <&i2c1>;
__overlay__ {
status = "okay";
};
};

fragment@1 {
target = <&gpio>;
__overlay__ {
rp1_i2s1_dac8x: rp1_i2s1_dac8x {
function = "i2s1";
pins = "gpio18", "gpio19", "gpio20",
"gpio21", "gpio22", "gpio23",
"gpio24", "gpio25", "gpio26",
"gpio27";
bias-disable;
};
};
};

fragment@2 {
target = <&i2s_clk_consumer>;
__overlay__ {
pinctrl-names = "default";
pinctrl-0 = <&rp1_i2s1_dac8x>;
status = "okay";
};
};

fragment@3 {
target-path = "/";
__overlay__ {
dummy-codec {
#sound-dai-cells = <0>;
compatible = "snd-soc-dummy";
status = "okay";
};
};
};

fragment@4 {
target = <&sound>;
__overlay__ {
compatible = "hifiberry,hifiberry-studio-dac8x";
i2s-controller = <&i2s_clk_consumer>;
clk-provider;
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@pelwell pelwell Jan 15, 2026

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This would not be necessary if the Pro had a different compatible string, but you may have reasons to prefer doing it like this - I'm not really bothered either way.

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@j-schambacher j-schambacher Jan 19, 2026

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I'd like to keep it as is. It seems the easiest and simple way for us.

status = "okay";
};
};

};
1 change: 1 addition & 0 deletions arch/arm64/configs/bcm2711_defconfig
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Expand Up @@ -1155,6 +1155,7 @@ CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSHD=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_STUDIO_DAC8X=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
CONFIG_SND_BCM2708_SOC_PIFI_40=m
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1 change: 1 addition & 0 deletions arch/arm64/configs/bcm2712_defconfig
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Expand Up @@ -1157,6 +1157,7 @@ CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSHD=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_STUDIO_DAC8X=m
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@pelwell pelwell Jan 19, 2026

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I think you should also add this to bcm2711_defconfig, which runs happily on Pi 5, just with 4kB pages instead of 16kB.

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@j-schambacher j-schambacher Jan 20, 2026

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I see that bcm2711 kernel runs on a Pi 5 but our driver does not support Pi 4 as it's made for multi channel audio (only).

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@pelwell pelwell Jan 20, 2026

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That's not a problem. All the kernels have support for lots of hardware that most people don't have, which is fine if the drivers are modules.

CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
CONFIG_SND_BCM2708_SOC_PIFI_40=m
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7 changes: 7 additions & 0 deletions sound/soc/bcm/Kconfig
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Expand Up @@ -100,6 +100,13 @@
help
Say Y or M if you want to add support for HifiBerry DSP-DAC.

config SND_BCM2708_SOC_HIFIBERRY_STUDIO_DAC8X

Check failure on line 103 in sound/soc/bcm/Kconfig

View workflow job for this annotation

GitHub Actions / checkpatch review 

WARNING: please write a help paragraph that fully describes the config symbol
tristate "Support for HifiBerry Studio DAC8x soundcards"
help
Say Y or M if you want to add support for
HifiBerry Studio DAC8x soundcards. Only available
for Pi 5

config SND_BCM2708_SOC_HIFIBERRY_DIGI
tristate "Support for HifiBerry Digi"
select SND_SOC_WM8804
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2 changes: 2 additions & 0 deletions sound/soc/bcm/Makefile
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Expand Up @@ -24,6 +24,7 @@ snd-soc-hifiberry-dacplushd-objs := hifiberry_dacplushd.o
snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o
snd-soc-hifiberry-dacplusdsp-objs := hifiberry_dacplusdsp.o
snd-soc-hifiberry-studio-dac8x-objs := hifiberry_studio_dac8x.o
snd-soc-justboom-both-objs := justboom-both.o
snd-soc-justboom-dac-objs := justboom-dac.o
snd-soc-rpi-cirrus-objs := rpi-cirrus.o
Expand Down Expand Up @@ -58,6 +59,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSHD) += snd-soc-hifiberry-dacplushd
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP) += snd-soc-hifiberry-dacplusdsp.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_STUDIO_DAC8X) += snd-soc-hifiberry-studio-dac8x.o
obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_BOTH) += snd-soc-justboom-both.o
obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
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