linux-kernel - RE: [PATCH 6/6] arm64: dts: fsd: Add sound card node for Tesla FSD

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Date:   Fri, 14 Oct 2022 18:59:13 +0530
From:   "Alim Akhtar" <alim.akhtar@...sung.com>
To:     "'Padmanabhan Rajanbabu'" <p.rajanbabu@...sung.com>,
        <lgirdwood@...il.com>, <broonie@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <s.nawrocki@...sung.com>,
        <perex@...ex.cz>, <tiwai@...e.com>, <pankaj.dubey@...sung.com>,
        <rcsekar@...sung.com>, <aswani.reddy@...sung.com>
Cc:     <alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-samsung-soc@...r.kernel.org>
Subject: RE: [PATCH 6/6] arm64: dts: fsd: Add sound card node for Tesla FSD



>-----Original Message-----
>From: Padmanabhan Rajanbabu [mailto:p.rajanbabu@...sung.com]
>Sent: Friday, October 14, 2022 3:52 PM
>To: lgirdwood@...il.com; broonie@...nel.org; robh+dt@...nel.org;
>krzysztof.kozlowski+dt@...aro.org; s.nawrocki@...sung.com;
>perex@...ex.cz; tiwai@...e.com; pankaj.dubey@...sung.com;
>alim.akhtar@...sung.com; rcsekar@...sung.com;
>aswani.reddy@...sung.com
>Cc: alsa-devel@...a-project.org; devicetree@...r.kernel.org; linux-
>kernel@...r.kernel.org; linux-samsung-soc@...r.kernel.org; Padmanabhan
>Rajanbabu <p.rajanbabu@...sung.com>
>Subject: [PATCH 6/6] arm64: dts: fsd: Add sound card node for Tesla FSD
>
>Add device tree node support for sound card on Tesla FSD board
>
>Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@...sung.com>
>---
> arch/arm64/boot/dts/tesla/fsd-evb.dts | 49
>+++++++++++++++++++++++++++
> arch/arm64/boot/dts/tesla/fsd.dtsi    |  3 ++
> 2 files changed, 52 insertions(+)
>
>diff --git a/arch/arm64/boot/dts/tesla/fsd-evb.dts
>b/arch/arm64/boot/dts/tesla/fsd-evb.dts
>index c0a4509499ab..ecaa3c2e3045 100644
>--- a/arch/arm64/boot/dts/tesla/fsd-evb.dts
>+++ b/arch/arm64/boot/dts/tesla/fsd-evb.dts
>@@ -49,3 +49,52 @@
> &tdm_1 {
> 	status = "okay";
> };
>+
>+&sound {
>+	compatible = "tesla,fsd-sndcard";
>+	status = "okay";
>+	model = "fsd-i2s";
>+	widgets =
>+		"Speaker", "MAIN SPK",
>+		"Microphone", "MAIN MIC";
>+
>+	primary-dai-link-0 {
>+		link-name = "fsd-primary-0";
>+		dai-format = "i2s";
>+		tesla,bitclock-master = <&tdm_0>;
>+		tesla,frame-master = <&tdm_0>;
>+		cpu {
>+			sound-dai = <&tdm_0 0>;
>+		};
>+	};
>+
>+	secondary-dai-link-0 {
>+		link-name = "fsd-secondary-0";
>+		dai-format = "i2s";
>+		tesla,bitclock-master = <&tdm_0>;
>+		tesla,frame-master = <&tdm_0>;
>+		cpu {
>+			sound-dai = <&tdm_0 1>;
>+		};
>+	};
>+
>+	primary-dai-link-1 {
>+		link-name = "fsd-primary-1";
>+		dai-format = "i2s";
>+		tesla,bitclock-master = <&tdm_1>;
>+		tesla,frame-master = <&tdm_1>;
>+		cpu {
>+			sound-dai = <&tdm_1 0>;
>+		};
>+	};
>+
>+	secondary-dai-link-1 {
>+		link-name = "fsd-secondary-1";
>+		dai-format = "i2s";
>+		tesla,bitclock-master = <&tdm_1>;
>+		tesla,frame-master = <&tdm_1>;
>+		cpu {
>+			sound-dai = <&tdm_1 1>;
>+		};
>+	};
>+};
>diff --git a/arch/arm64/boot/dts/tesla/fsd.dtsi
>b/arch/arm64/boot/dts/tesla/fsd.dtsi
>index 5decad45a1b6..fc8931f830a7 100644
>--- a/arch/arm64/boot/dts/tesla/fsd.dtsi
>+++ b/arch/arm64/boot/dts/tesla/fsd.dtsi
>@@ -847,6 +847,9 @@
> 			status = "disabled";
> 		};
>
>+		sound: sound {
>+		};
>+
Why to have an empty node in dtsi?

> 		timer@...40000 {
> 			compatible = "tesla,fsd-mct", "samsung,exynos4210-
>mct";
> 			reg = <0x0 0x10040000 0x0 0x800>;
>--
>2.17.1