diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-1045-Adds-the-DT-overlays-to-support-Hifiberry-AMP100.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-1045-Adds-the-DT-overlays-to-support-Hifiberry-AMP100.patch | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-1045-Adds-the-DT-overlays-to-support-Hifiberry-AMP100.patch b/target/linux/bcm27xx/patches-5.4/950-1045-Adds-the-DT-overlays-to-support-Hifiberry-AMP100.patch new file mode 100644 index 0000000000..24ff1b3a34 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-1045-Adds-the-DT-overlays-to-support-Hifiberry-AMP100.patch @@ -0,0 +1,132 @@ +From d689ccf52fb81664b7eccb91dc05a93d64ba793c Mon Sep 17 00:00:00 2001 +From: Joerg Schambacher <joerg@i2audio.com> +Date: Fri, 29 Jan 2021 08:26:44 +0100 +Subject: [PATCH] Adds the DT-overlays to support Hifiberry AMP100 + +Adds new DT-overlay to control AMP100. + +Signed-off-by: Joerg Schambacher <joerg@hifiberry.com> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 30 ++++++++- + .../dts/overlays/hifiberry-amp100-overlay.dts | 64 +++++++++++++++++++ + 3 files changed, 94 insertions(+), 1 deletion(-) + create mode 100644 arch/arm/boot/dts/overlays/hifiberry-amp100-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -60,6 +60,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + hd44780-lcd.dtbo \ + hdmi-backlight-hwhack-gpio.dtbo \ + hifiberry-amp.dtbo \ ++ hifiberry-amp100.dtbo \ + hifiberry-dac.dtbo \ + hifiberry-dacplus.dtbo \ + hifiberry-dacplusadc.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -1045,8 +1045,36 @@ Load: dtoverlay=hifiberry-amp + Params: <None> + + ++Name: hifiberry-amp100 ++Info: Configures the HifiBerry AMP100 audio card ++Load: dtoverlay=hifiberry-amp100,<param>=<val> ++Params: 24db_digital_gain Allow gain to be applied via the PCM512x codec ++ Digital volume control. Enable with ++ "dtoverlay=hifiberry-amp100,24db_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!) ++ slave Force DAC+ Pro into slave mode, using Pi as ++ master for bit clock and frame clock. ++ leds_off If set to 'true' the onboard indicator LEDs ++ are switched off at all times. ++ auto_mute If set to 'true' the amplifier is automatically ++ muted when the DAC is not playing. ++ mute_ext_ctl The amplifier's HW mute control is enabled ++ in ALSA mixer and set to <val>. ++ Will be overwritten by ALSA user settings. ++ ++ + Name: hifiberry-dac +-Info: Configures the HifiBerry DAC audio card ++Info: Configures the HifiBerry DAC audio cards + Load: dtoverlay=hifiberry-dac + Params: <None> + +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/hifiberry-amp100-overlay.dts +@@ -0,0 +1,64 @@ ++// Definitions for HiFiBerry AMP100 ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2835"; ++ ++ fragment@0 { ++ target-path = "/"; ++ __overlay__ { ++ dacpro_osc: dacpro_osc { ++ compatible = "hifiberry,dacpro-clk"; ++ #clock-cells = <0>; ++ }; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&i2s>; ++ __overlay__ { ++ status = "okay"; ++ }; ++ }; ++ ++ fragment@2 { ++ target = <&i2c1>; ++ __overlay__ { ++ #address-cells = <1>; ++ #size-cells = <0>; ++ status = "okay"; ++ ++ pcm5122@4d { ++ #sound-dai-cells = <0>; ++ compatible = "ti,pcm5122"; ++ reg = <0x4d>; ++ clocks = <&dacpro_osc>; ++ AVDD-supply = <&vdd_3v3_reg>; ++ DVDD-supply = <&vdd_3v3_reg>; ++ CPVDD-supply = <&vdd_3v3_reg>; ++ status = "okay"; ++ }; ++ }; ++ }; ++ ++ fragment@3 { ++ target = <&sound>; ++ hifiberry_dacplus: __overlay__ { ++ compatible = "hifiberry,hifiberry-dacplus"; ++ i2s-controller = <&i2s>; ++ status = "okay"; ++ mute-gpio = <&gpio 4 0>; ++ reset-gpio = <&gpio 17 0x11>; ++ }; ++ }; ++ ++ __overrides__ { ++ 24db_digital_gain = ++ <&hifiberry_dacplus>,"hifiberry,24db_digital_gain?"; ++ slave = <&hifiberry_dacplus>,"hifiberry-dacplus,slave?"; ++ leds_off = <&hifiberry_dacplus>,"hifiberry-dacplus,leds_off?"; ++ mute_ext_ctl = <&hifiberry_dacplus>,"hifiberry-dacplus,mute_ext_ctl:0"; ++ auto_mute = <&hifiberry_dacplus>,"hifiberry-dacplus,auto_mute?"; ++ }; ++}; |