Enable sound and modem for the Xiaomi Redmi 2. The setup
is similar to most MSM8916 devices, i.e.:
- QDSP6 audio
- Earpiece/headphones/microphones via digital/analog codec in
MSM8916/PM8916
- Audio jack detection via analog codec in PM8916
- WWAN Internet via BAM-DMUX
except:
- Speaker amplifier is connected to HPH_R (headphones) output of the
analog codec. There is a separate analog switch that allows disabling
playback via the headphone jack.
Signed-off-by: Stephan Gerhold <stephan@xxxxxxxxxxx>
---
.../boot/dts/qcom/msm8916-wingtech-wt88047.dts | 76 ++++++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
index 419f35c1fc92..600c225a2568 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
@@ -6,6 +6,8 @@
/dts-v1/;
#include "msm8916-pm8916.dtsi"
+#include "msm8916-modem-qdsp6.dtsi"
+
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/leds/common.h>
@@ -25,6 +27,28 @@ chosen {
stdout-path = "serial0";
};
+ speaker_amp: audio-amplifier {
+ compatible = "simple-audio-amplifier";
+ enable-gpios = <&tlmm 117 GPIO_ACTIVE_HIGH>;
+ sound-name-prefix = "Speaker Amp";
+ pinctrl-0 = <&speaker_amp_default>;
+ pinctrl-names = "default";
+ };
+
+ /*
+ * This seems to be actually an analog switch that either routes audio
+ * to the headphone jack or nowhere. Given that we need to enable a GPIO
+ * to get sound on headphones, modelling it as simple-audio-amplifier
+ * works just fine.
+ */
+ headphones_switch: audio-switch {
+ compatible = "simple-audio-amplifier";
+ enable-gpios = <&tlmm 8 GPIO_ACTIVE_HIGH>;
+ sound-name-prefix = "Headphones Switch";
+ pinctrl-0 = <&headphones_switch_default>;
+ pinctrl-names = "default";
+ };
+
flash-led-controller {
compatible = "ocs,ocp8110";
enable-gpios = <&tlmm 31 GPIO_ACTIVE_HIGH>;
@@ -146,6 +170,18 @@ &blsp_uart2 {
status = "okay";
};
+&mpss_mem {
+ reg = <0x0 0x86800000 0x0 0x5100000>;
+};
+
+&pm8916_codec {
+ qcom,micbias1-ext-cap;
+ qcom,micbias-lvl = <2800>;
+ qcom,mbhc-vthreshold-low = <75 100 120 180 500>;
+ qcom,mbhc-vthreshold-high = <75 100 120 180 500>;
+ qcom,hphl-jack-type-normally-open;
+};
+
&pm8916_resin {
status = "okay";
linux,code = <KEY_VOLUMEDOWN>;
@@ -180,6 +216,32 @@ &sdhc_2 {
non-removable;
};
+&sound {
+ status = "okay";
+
+ /*
+ * Provide widgets/pin-switches to allow enabling speaker and headphones
+ * separately. Both are routed via the HPH_L/HPH_R pins of the codec.
+ */
+ model = "wt88047";
+ widgets =
+ "Speaker", "Speaker",
+ "Headphone", "Headphones";
+ pin-switches = "Speaker", "Headphones";
+ audio-routing =
+ "Speaker", "Speaker Amp OUTL",
+ "Speaker", "Speaker Amp OUTR",
+ "Speaker Amp INL", "HPH_R",
+ "Speaker Amp INR", "HPH_R",
+ "Headphones", "Headphones Switch OUTL",
+ "Headphones", "Headphones Switch OUTR",
+ "Headphones Switch INL", "HPH_L",
+ "Headphones Switch INR", "HPH_R",
+ "AMIC1", "MIC BIAS External1",
+ "AMIC2", "MIC BIAS Internal2";
+ aux-devs = <&speaker_amp>, <&headphones_switch>;
+};
+
&usb {
status = "okay";
extcon = <&usb_id>, <&usb_id>;
@@ -226,6 +288,13 @@ gpio_keys_default: gpio-keys-default-state {
bias-pull-up;
};
+ headphones_switch_default: headphones-switch-default-state {
+ pins = "gpio8";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
imu_default: imu-default-state {
pins = "gpio115";
function = "gpio";
@@ -234,6 +303,13 @@ imu_default: imu-default-state {
bias-disable;
};
+ speaker_amp_default: speaker-amp-default-state {
+ pins = "gpio117";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
touchscreen_default: touchscreen-default-state {
touchscreen-pins {
pins = "gpio13";
--
2.42.0
