Re: [PATCH v7 4/4] arm64: dts: qcom: sc7280: Add dt nodes for sound card

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On 4/14/2022 2:53 AM, Matthias Kaehlcke wrote:
Thanks for your time Matthias!!!
On Wed, Apr 13, 2022 at 08:51:17PM +0530, Srinivasa Rao Mandadapu wrote:
Add dt nodes for sound card support, which is using WCD938x headset
playback, capture, I2S speaker playback and DMICs via VA macro.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@xxxxxxxxxxx>
Co-developed-by: Venkata Prasad Potturu <quic_potturu@xxxxxxxxxxx>
Signed-off-by: Venkata Prasad Potturu <quic_potturu@xxxxxxxxxxx>
---
  arch/arm64/boot/dts/qcom/sc7280-crd.dts  | 23 ++++++++
  arch/arm64/boot/dts/qcom/sc7280-idp.dtsi | 93 ++++++++++++++++++++++++++++++++
  2 files changed, 116 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7280-crd.dts b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
index b944366..1e16854 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-crd.dts
+++ b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
You need to refresh your tree, this file has been renamed to
sc7280-crd-r3.dts. That DT is for the CRD <= 2.x, newer versions
use sc7280-herobrine-crd.dts.
Okay. will update accordingly.

@@ -90,6 +90,29 @@ ap_ts_pen_1v8: &i2c13 {
  	us-euro-gpios = <&tlmm 81 GPIO_ACTIVE_HIGH>;
  };
+&sound {
+	audio-routing =
+		"IN1_HPHL", "HPHL_OUT",
+		"IN2_HPHR", "HPHR_OUT",
+		"AMIC1", "MIC BIAS1",
+		"AMIC2", "MIC BIAS2",
+		"VA DMIC0", "MIC BIAS1",
+		"VA DMIC1", "MIC BIAS1",
+		"VA DMIC2", "MIC BIAS3",
+		"VA DMIC3", "MIC BIAS3",
+		"TX SWR_ADC0", "ADC1_OUTPUT",
+		"TX SWR_ADC1", "ADC2_OUTPUT",
+		"TX SWR_ADC2", "ADC3_OUTPUT",
+		"TX SWR_DMIC0", "DMIC1_OUTPUT",
+		"TX SWR_DMIC1", "DMIC2_OUTPUT",
+		"TX SWR_DMIC2", "DMIC3_OUTPUT",
+		"TX SWR_DMIC3", "DMIC4_OUTPUT",
+		"TX SWR_DMIC4", "DMIC5_OUTPUT",
+		"TX SWR_DMIC5", "DMIC6_OUTPUT",
+		"TX SWR_DMIC6", "DMIC7_OUTPUT",
+		"TX SWR_DMIC7", "DMIC8_OUTPUT";
+};
+
  &tlmm {
  	tp_int_odl: tp-int-odl {
  		pins = "gpio7";
diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
index cf62d06..a7c884a 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
@@ -84,6 +84,99 @@
  		pinctrl-names = "default";
  		pinctrl-0 = <&nvme_pwren>;
  	};
+
+	sound: sound {
+		compatible = "google,sc7280-herobrine";
+		model = "sc7280-wcd938x-max98360a-1mic";
+
+		audio-routing =
+			"IN1_HPHL", "HPHL_OUT",
+			"IN2_HPHR", "HPHR_OUT",
+			"AMIC1", "MIC BIAS1",
+			"AMIC2", "MIC BIAS2",
+			"VA DMIC0", "MIC BIAS3",
+			"VA DMIC1", "MIC BIAS3",
+			"VA DMIC2", "MIC BIAS1",
+			"VA DMIC3", "MIC BIAS1",
+			"TX SWR_ADC0", "ADC1_OUTPUT",
+			"TX SWR_ADC1", "ADC2_OUTPUT",
+			"TX SWR_ADC2", "ADC3_OUTPUT",
+			"TX SWR_DMIC0", "DMIC1_OUTPUT",
+			"TX SWR_DMIC1", "DMIC2_OUTPUT",
+			"TX SWR_DMIC2", "DMIC3_OUTPUT",
+			"TX SWR_DMIC3", "DMIC4_OUTPUT",
+			"TX SWR_DMIC4", "DMIC5_OUTPUT",
+			"TX SWR_DMIC5", "DMIC6_OUTPUT",
+			"TX SWR_DMIC6", "DMIC7_OUTPUT",
+			"TX SWR_DMIC7", "DMIC8_OUTPUT";
+
+		qcom,msm-mbhc-hphl-swh = <1>;
+		qcom,msm-mbhc-gnd-swh = <1>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+		#sound-dai-cells = <0>;
+
+		dai-link@1 {
+			link-name = "MAX98360A";
+			reg = <MI2S_SECONDARY>;
Dumb question: is this value actually used? A quick glance through
qcom_snd_parse_of() suggests it isn't. And the CPU DAI id is already
specified in the 'sound-dai' property below.

In a quick test I replaced the corresponding 'reg' values in
sc7180-trogdor.dtsi with 'random' values and audio playback on
my coachz (sc7180-trogdor-coachz-r3.dts) still works ...

Yes. agree that it's not being used. But i am not sure of general syntax followed.

for now  will delete it.


+			cpu {
+				sound-dai = <&lpass_cpu MI2S_SECONDARY>;
+			};
+
+			codec {
+				sound-dai = <&max98360a>;
+			};
+		};
+
+		dai-link@5 {
+			link-name = "DisplayPort";
+			reg = <LPASS_DP_RX>;
nit: add an empty line (in all links) to separate the properties from the node
Okay.

+			cpu {
+				sound-dai = <&lpass_cpu LPASS_DP_RX>;
+			};
+
+			codec {
+				sound-dai = <&mdss_dp>;
+			};
+		};
+
+		dai-link@6 {
+			link-name = "WCD9385 Playback";
+			reg = <LPASS_CDC_DMA_RX0>;
+			cpu {
+				sound-dai = <&lpass_cpu LPASS_CDC_DMA_RX0>;
+			};
+
+			codec {
+				sound-dai = <&wcd938x 0>, <&swr0 0>, <&lpass_rx_macro 0>;
+			};
+		};
+
+		dai-link@19 {
+			link-name = "WCD9385 Capture";
+			reg = <LPASS_CDC_DMA_TX3>;
+			cpu {
+				sound-dai = <&lpass_cpu LPASS_CDC_DMA_TX3>;
+			};
+
+			codec {
+				sound-dai = <&wcd938x 1>, <&swr1 0>, <&lpass_tx_macro 0>;
+			};
+		};
+
+		dai-link@25 {
+			link-name = "DMIC";
+			reg = <LPASS_CDC_DMA_VA_TX0>;
+			cpu {
+				sound-dai = <&lpass_cpu LPASS_CDC_DMA_VA_TX0>;
+			};
+
+			codec {
+				sound-dai = <&lpass_va_macro 0>;
+			};
+		};
+	};
  };
&apps_rsc {
--
2.7.4




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