new file mode 100644
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+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/*
+ * msm8916-modem-qdsp6.dtsi describes the typical modem setup on MSM8916 devices
+ * (or similar SoCs) with audio routed via the QDSP6 services provided by the
+ * modem firmware. The digital/analog codec in the SoC/PMIC is used by default,
+ * but boards can define additional codecs by adding additional backend DAI links.
+ */
+
+#include <dt-bindings/sound/qcom,q6afe.h>
+#include <dt-bindings/sound/qcom,q6asm.h>
+
+&apr {
+ status = "okay";
+};
+
+&bam_dmux {
+ status = "okay";
+};
+
+&bam_dmux_dma {
+ status = "okay";
+};
+
+&lpass {
+ status = "reserved"; /* Controlled by QDSP6 */
+};
+
+&lpass_codec {
+ status = "okay";
+};
+
+&mba_mem {
+ status = "okay";
+};
+
+&mpss {
+ status = "okay";
+};
+
+&mpss_mem {
+ status = "okay";
+};
+
+&pm8916_codec {
+ status = "okay";
+};
+
+&q6afedai {
+ dai@16 {
+ reg = <PRIMARY_MI2S_RX>;
+ qcom,sd-lines = <0 1>;
+ };
+ dai@20 {
+ reg = <TERTIARY_MI2S_TX>;
+ qcom,sd-lines = <0 1>;
+ };
+};
+
+&q6asmdai {
+ dai@0 {
+ reg = <0>;
+ direction = <Q6ASM_DAI_RX>;
+ };
+ dai@1 {
+ reg = <1>;
+ direction = <Q6ASM_DAI_TX>;
+ };
+ dai@2 {
+ reg = <2>;
+ direction = <Q6ASM_DAI_RX>;
+ };
+ dai@3 {
+ reg = <3>;
+ direction = <Q6ASM_DAI_RX>;
+ is-compress-dai;
+ };
+};
+
+&sound {
+ compatible = "qcom,msm8916-qdsp6-sndcard";
+ model = "msm8916";
+
+ pinctrl-0 = <&cdc_pdm_default>;
+ pinctrl-1 = <&cdc_pdm_sleep>;
+ pinctrl-names = "default", "sleep";
+
+ status = "okay";
+
+ frontend0-dai-link {
+ link-name = "MultiMedia1";
+
+ cpu {
+ sound-dai = <&q6asmdai MSM_FRONTEND_DAI_MULTIMEDIA1>;
+ };
+ };
+
+ frontend1-dai-link {
+ link-name = "MultiMedia2";
+
+ cpu {
+ sound-dai = <&q6asmdai MSM_FRONTEND_DAI_MULTIMEDIA2>;
+ };
+ };
+
+ frontend2-dai-link {
+ link-name = "MultiMedia3";
+
+ cpu {
+ sound-dai = <&q6asmdai MSM_FRONTEND_DAI_MULTIMEDIA3>;
+ };
+ };
+
+ frontend3-dai-link {
+ link-name = "MultiMedia4";
+
+ cpu {
+ sound-dai = <&q6asmdai MSM_FRONTEND_DAI_MULTIMEDIA4>;
+ };
+ };
+
+ sound_link_backend0: backend0-dai-link {
+ link-name = "Primary MI2S";
+
+ cpu {
+ sound-dai = <&q6afedai PRIMARY_MI2S_RX>;
+ };
+ platform {
+ sound-dai = <&q6routing>;
+ };
+ codec {
+ sound-dai = <&lpass_codec 0>, <&pm8916_codec 0>;
+ };
+ };
+
+ sound_link_backend1: backend1-dai-link {
+ link-name = "Tertiary MI2S";
+
+ cpu {
+ sound-dai = <&q6afedai TERTIARY_MI2S_TX>;
+ };
+ platform {
+ sound-dai = <&q6routing>;
+ };
+ codec {
+ sound-dai = <&lpass_codec 1>, <&pm8916_codec 1>;
+ };
+ };
+};
Most MSM8916/MSM8939 devices use very similar setups for the modem, because most of the device-specific details are abstracted by the modem firmware. There are several definitions (status switches, DAI links etc) that will be exactly the same for every board. Introduce a common msm8916-modem-qdsp6.dtsi include that can be used to simplify enabling the modem for such devices. By default the digital/analog codec in the SoC/PMIC is used, but boards can define additional codecs by adding additional backend DAI links. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> --- arch/arm64/boot/dts/qcom/msm8916-modem-qdsp6.dtsi | 148 ++++++++++++++++++++++ 1 file changed, 148 insertions(+)