[PATCH v2 12/14] arm64: dts: qcom: msm8916-samsung-gt5: Add sound and modem

From: Stephan Gerhold
Date: Tue Oct 03 2023 - 09:19:32 EST

From: Jasper Korten <jja2000@xxxxxxxxx>

Enable sound and modem for the Samsung Galaxy Tab A 2015 tablets.
The setup is similar to most MSM8916 devices, i.e.:

- QDSP6 audio
- Headphones/microphones via digital/analog codec in
MSM8916/PM8916. Earpiece exists on samsung-gt58 only.
- WWAN Internet via BAM-DMUX

except:

- gt510: Stereo Maxim MAX98357A codecs for speaker on Quaternary MI2S
- gt58: Mono NXP TFA9895 codec for speaker on Quaternary MI2S
- For some reason connected to GPIOs where no hardware I2C
controller is available -> need to use i2c-gpio
- Samsung-specific audio jack detection (not supported yet)

Signed-off-by: Jasper Korten <jja2000@xxxxxxxxx>
Co-developed-by: Siddharth Manthan <siddharth.manthan@xxxxxxxxx>
Signed-off-by: Siddharth Manthan <siddharth.manthan@xxxxxxxxx>
Co-developed-by: Nikita Travkin <nikita@xxxxxxx>
Signed-off-by: Nikita Travkin <nikita@xxxxxxx>
[Stephan: Add consistent commit message, minor refactoring]
Signed-off-by: Stephan Gerhold <stephan@xxxxxxxxxxx>
---
.../boot/dts/qcom/msm8916-samsung-gt5-common.dtsi | 54 ++++++++++++++++++++++
arch/arm64/boot/dts/qcom/msm8916-samsung-gt510.dts | 22 +++++++++
arch/arm64/boot/dts/qcom/msm8916-samsung-gt58.dts | 42 +++++++++++++++++
3 files changed, 118 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-gt5-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-gt5-common.dtsi
index 6a16eb5ce07b..fbd2caf405d5 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-gt5-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-gt5-common.dtsi
@@ -3,9 +3,12 @@
/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/interrupt-controller/irq.h>
+#include <dt-bindings/sound/apq8016-lpass.h>

/ {
aliases {
@@ -116,6 +119,29 @@ &blsp_uart2 {
status = "okay";
};

+/*
+ * For some reason the speaker amplifier is connected to the second SD line
+ * (MI2S_2_D1) instead of the first (MI2S_2_D0). This must be configured in the
+ * device tree, otherwise audio will seemingly play fine on the wrong SD line
+ * but the speaker stays silent.
+ *
+ * When routing audio via QDSP6 (the default) the &lpass node is reserved and
+ * the definitions from &q6afedai are used. When the modem is disabled audio can
+ * be alternatively routed directly to the LPASS hardware with reduced latency.
+ * The definitions for &lpass are here for completeness to simplify changing the
+ * setup with minor changes to the DT (either manually or with DT overlays).
+ */
+&lpass {
+ dai-link@3 {
+ reg = <MI2S_QUATERNARY>;
+ qcom,playback-sd-lines = <1>;
+ };
+};
+
+&mpss_mem {
+ reg = <0x0 0x86800000 0x0 0x5400000>;
+};
+
&pm8916_resin {
linux,code = <KEY_VOLUMEDOWN>;
status = "okay";
@@ -133,6 +159,13 @@ &pm8916_usbin {
status = "okay";
};

+&q6afedai {
+ dai@22 {
+ reg = <QUATERNARY_MI2S_RX>;
+ qcom,sd-lines = <1>;
+ };
+};
+
&sdhc_1 {
status = "okay";
};
@@ -147,6 +180,27 @@ &sdhc_2 {
status = "okay";
};

+&sound {
+ audio-routing =
+ "AMIC1", "MIC BIAS External1",
+ "AMIC2", "MIC BIAS Internal2",
+ "AMIC3", "MIC BIAS External1";
+
+ sound_link_backend2: backend2-dai-link {
+ link-name = "Quaternary MI2S";
+
+ cpu {
+ sound-dai = <&q6afedai QUATERNARY_MI2S_RX>;
+ };
+ platform {
+ sound-dai = <&q6routing>;
+ };
+ codec {
+ sound-dai = <&speaker_codec>;
+ };
+ };
+};
+
&usb {
dr_mode = "peripheral";
extcon = <&pm8916_usbin>;
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-gt510.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-gt510.dts
index c3f1acc55078..5b34529b816c 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-gt510.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-gt510.dts
@@ -9,6 +9,14 @@ / {
compatible = "samsung,gt510", "qcom,msm8916";
chassis-type = "tablet";

+ speaker_codec: audio-codec {
+ compatible = "maxim,max98357a";
+ sdmode-gpios = <&tlmm 55 GPIO_ACTIVE_HIGH>;
+ #sound-dai-cells = <0>;
+ pinctrl-0 = <&audio_sdmode_default>;
+ pinctrl-names = "default";
+ };
+
clk_pwm: pwm {
compatible = "clk-pwm";
#pwm-cells = <2>;
@@ -146,7 +154,21 @@ &mdss_dsi0_out {
remote-endpoint = <&panel_in>;
};

+&sound {
+ model = "samsung-gt510";
+ pinctrl-0 = <&cdc_pdm_default &sec_mi2s_default>;
+ pinctrl-1 = <&cdc_pdm_sleep &sec_mi2s_sleep>;
+ pinctrl-names = "default", "sleep";
+};
+
&tlmm {
+ audio_sdmode_default: audio-sdmode-default-state {
+ pins = "gpio55";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
buckbooster_en_default: buckbooster-en-default-state {
pins = "gpio51";
function = "gpio";
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-gt58.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-gt58.dts
index 998625abd409..579312ed53ce 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-gt58.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-gt58.dts
@@ -35,6 +35,26 @@ reg_vdd_tsp: regulator-vdd-tsp {
pinctrl-names = "default";
};

+ i2c-amplifier {
+ compatible = "i2c-gpio";
+ sda-gpios = <&tlmm 55 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ scl-gpios = <&tlmm 56 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+
+ pinctrl-0 = <&amp_i2c_default>;
+ pinctrl-names = "default";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ speaker_codec: audio-codec@34 {
+ compatible = "nxp,tfa9895";
+ reg = <0x34>;
+ vddd-supply = <&pm8916_l5>;
+ sound-name-prefix = "Speaker";
+ #sound-dai-cells = <0>;
+ };
+ };
+
vibrator {
compatible = "gpio-vibrator";
enable-gpios = <&tlmm 76 GPIO_ACTIVE_HIGH>;
@@ -98,7 +118,21 @@ &mdss_dsi0_out {
remote-endpoint = <&panel_in>;
};

+&sound {
+ model = "samsung-a2015";
+ pinctrl-0 = <&cdc_pdm_default &sec_mi2s_default &secondary_mic_default>;
+ pinctrl-1 = <&cdc_pdm_sleep &sec_mi2s_sleep &secondary_mic_default>;
+ pinctrl-names = "default", "sleep";
+};
+
&tlmm {
+ amp_i2c_default: amp-i2c-default-state {
+ pins = "gpio55", "gpio56";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
buckbooster_en_default: buckbooster-en-default-state {
pins = "gpio8";
function = "gpio";
@@ -127,6 +161,14 @@ reg_tsp_en_default: reg-tsp-en-default-state {
bias-disable;
};

+ secondary_mic_default: secondary-mic-default-state {
+ pins = "gpio98";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ output-high;
+ };
+
tsp_int_default: tsp-int-default-state {
pins = "gpio13";
function = "gpio";

--
2.42.0