Commit fc3a1b27 authored by Lad Prabhakar's avatar Lad Prabhakar Committed by Geert Uytterhoeven
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ARM: dts: r8a7742-iwg21d-q7: Sound DMA support via DVC on DTS 



Enable sound with DMA support on carrier board.

DMA transfer uses DVC

     DMA               DMApp
[MEM] -> [SRC] -> [DVC] -> [SSIU] -> [SSI]

     DMA               DMApp
[MEM] <- [DVC] <- [SRC] <- [SSIU] <- [SSI]

Signed-off-by: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: default avatarMarian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Link: https://lore.kernel.org/r/1590611013-26029-4-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com


Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent 43676501

arch/arm/boot/dts/r8a7742-iwg21d-q7.dts

+63 −0
Original line number Diff line number Diff line
@@ -5,6 +5,29 @@ 
 * Copyright (C) 2020 Renesas Electronics Corp.

 */



/*

 * SSI-SGTL5000

 *

 * This command is required when Playback/Capture

 *

 *      amixer set "DVC Out" 100%

 *      amixer set "DVC In" 100%

 *

 * You can use Mute

 *

 *      amixer set "DVC Out Mute" on

 *      amixer set "DVC In Mute" on

 *

 * You can use Volume Ramp

 *

 *      amixer set "DVC Out Ramp Up Rate"   "0.125 dB/64 steps"

 *      amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps"

 *      amixer set "DVC Out Ramp" on

 *      aplay xxx.wav &

 *      amixer set "DVC Out"  80%  // Volume Down

 *      amixer set "DVC Out" 100%  // Volume Up

 */



/dts-v1/;

#include "r8a7742-iwg21m.dtsi"
@@ -37,6 +60,21 @@ reg_1p5v: 1p5v { 
		regulator-always-on;

	};



	rsnd_sgtl5000: sound {

		compatible = "simple-audio-card";

		simple-audio-card,format = "i2s";

		simple-audio-card,bitclock-master = <&sndcodec>;

		simple-audio-card,frame-master = <&sndcodec>;



		sndcpu: simple-audio-card,cpu {

			sound-dai = <&rcar_sound>;

		};



		sndcodec: simple-audio-card,codec {

			sound-dai = <&sgtl5000>;

		};

	};



	vcc_sdhi2: regulator-vcc-sdhi2 {

		compatible = "regulator-fixed";
@@ -125,6 +163,27 @@ sdhi2_pins_uhs: sd2_uhs { 
		function = "sdhi2";

		power-source = <1800>;

	};



	sound_pins: sound {

		groups = "ssi34_ctrl", "ssi3_data", "ssi4_data";

		function = "ssi";

	};

};



&rcar_sound {

	pinctrl-0 = <&sound_pins>;

	pinctrl-names = "default";

	status = "okay";



	/* Single DAI */

	#sound-dai-cells = <0>;



	rcar_sound,dai {

		dai0 {

			playback = <&ssi4 &src4 &dvc1>;

			capture = <&ssi3 &src3 &dvc0>;

		};

	};

};



&rwdt {
@@ -159,3 +218,7 @@ &sdhi2 { 
	sd-uhs-sdr50;

	status = "okay";

};



&ssi4 {

	shared-pin;

};