From: "Lin, Meng-Bo" <linmengbo0...@protonmail.com>
Enable sound and modem for the Samsung A7. The setup is similar to most
MSM8916 devices, i.e.:
- QDSP6 audio
- Earpiece/headphones/microphones via digital/analog codec in
MSM8916/PM8916
- WWAN Internet via BAM-DMUX
except for the same differences as the MSM8916-based Samsung A2015
devices:
- NXP TFA9895 codec for speaker on Quaternary MI2S
- Samsung-specific audio jack detection (not supported yet)
Signed-off-by: "Lin, Meng-Bo" <linmengbo0...@protonmail.com>
[Stephan: Add consistent commit message, minor refactoring]
Signed-off-by: Stephan Gerhold <step...@gerhold.net>
---
arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts | 70 +++++++++++++++++++++++++
1 file changed, 70 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
index fccd8fec8b8f..aa6c39482a2f 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -3,10 +3,12 @@
/dts-v1/;
#include "msm8939-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>
/ {
model = "Samsung Galaxy A7 (2015)";
@@ -287,6 +289,18 @@ muic: extcon@25 {
};
};
+&blsp_i2c2 {
+ status = "okay";
+
+ speaker_codec: audio-codec@34 {
+ compatible = "nxp,tfa9895";
+ reg = <0x34>;
+ vddd-supply = <&pm8916_l5>;
+ sound-name-prefix = "Speaker";
+ #sound-dai-cells = <0>;
+ };
+};
+
&blsp_i2c5 {
status = "okay";
@@ -309,6 +323,29 @@ &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 0x5800000>;
+};
+
&pm8916_resin {
linux,code = <KEY_VOLUMEDOWN>;
status = "okay";
@@ -321,6 +358,13 @@ pm8916_l17: l17 {
};
};
+&q6afedai {
+ dai@22 {
+ reg = <QUATERNARY_MI2S_RX>;
+ qcom,sd-lines = <1>;
+ };
+};
+
&sdhc_1 {
status = "okay";
};
@@ -335,6 +379,32 @@ &sdhc_2 {
status = "okay";
};
+&sound {
+ model = "samsung-a2015";
+ audio-routing =
+ "AMIC1", "MIC BIAS External1",
+ "AMIC2", "MIC BIAS Internal2",
+ "AMIC3", "MIC BIAS External1";
+
+ pinctrl-0 = <&cdc_pdm_default &sec_mi2s_default>;
+ pinctrl-1 = <&cdc_pdm_sleep &sec_mi2s_sleep>;
+ pinctrl-names = "default", "sleep";
+
+ 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 {
extcon = <&muic>, <&muic>;
status = "okay";
--
2.42.0
