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957a0921e2
Add DT overlay to allow using the ReSpeaker 2-mic hat connected to
the 26-pin header of the BananaPi BPi-R3.
Supported sample formats: S16_LE, S24_LE, S32_LE
Supported sample rates: 8/12/16/24/32/48/96/192 kHz
| BPi-R3 | ReSpeaker 2-mic
Signal | 26-pin | 40-pin
----------+----------+-------------------
VCC 5V | 2 | 2
I2C SDA | 3 | 3
I2C SCL | 5 | 5
GND | 6 | 6
PCM CLK | 12 | 12
PCM FS | 15 | 35
PCM DIN | 26 | 38
GND | 25 | 39
PCM DOUT | 22 | 40
Once connected, install the driver and tell U-Boot to apply the DT
overlay:
opkg kmod-sound-soc-mt7986-wm8960
fw_setenv bootconf_base "config-mt7986a-bananapi-bpi-r3#mt7986a-bananapi-bpi-r3-respeaker-2mics"
reboot
To setup the ReSpeaker for Stereo out on the Headphone plug:
amixer sset 'Right Output Mixer PCM' on
amixer sset 'Left Output Mixer PCM' on
amixer sset 'PCM Playback -6dB' off
amixer sset 'O018 I150_Switch' on
amixer sset 'O019 I151_Switch' on
amixer sset 'O124 I032_Switch' on
amixer sset 'O125 I033_Switch' on
amixer sset 'Headphone' 121
amixer sset 'Playback' 255
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
76 lines
1.7 KiB
Diff
76 lines
1.7 KiB
Diff
--- /dev/null
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+++ b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3-respeaker-2mics.dtso
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@@ -0,0 +1,62 @@
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+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
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+/*
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+ * Copyright (C) 2023 MediaTek Inc.
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+ * Author: Maso Huang <Maso.Huang@mediatek.com>
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+ */
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+
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "bananapi,bpi-r3", "mediatek,mt7986a";
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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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+ sound_wm8960 {
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+ compatible = "mediatek,mt7986-wm8960-sound";
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+ audio-routing = "Headphone", "HP_L",
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+ "Headphone", "HP_R",
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+ "LINPUT1", "AMIC",
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+ "RINPUT1", "AMIC";
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+
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+ status = "okay";
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+
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+ platform {
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+ sound-dai = <&afe>;
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+ };
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+
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+ codec {
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+ sound-dai = <&wm8960>;
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+ };
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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 = <&i2c0>;
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+ __overlay__ {
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&i2c_pins>;
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+ clock-frequency = <400000>;
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+ status = "okay";
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+
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+ wm8960: wm8960@1a {
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+ compatible = "wlf,wm8960";
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+ reg = <0x1a>;
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+ };
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&pio>;
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+ __overlay__ {
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+ i2c_pins: i2c-pins-3-4 {
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+ mux {
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+ function = "i2c";
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+ groups = "i2c";
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+ };
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+ };
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+ };
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+ };
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+};
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--- a/arch/arm64/boot/dts/mediatek/Makefile
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+++ b/arch/arm64/boot/dts/mediatek/Makefile
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@@ -12,6 +12,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-b
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dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-nand.dtbo
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dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-nor.dtbo
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dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-sd.dtbo
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+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-respeaker-2mics.dtbo
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dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
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dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
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dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
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