Commit b50ccab9 authored by Jai Luthra's avatar Jai Luthra Committed by Nishanth Menon
Browse files

arm64: dts: ti: am62x-sk: Add overlay for HDMI audio 



Enable audio output over HDMI instead of the 3.5mm jack.

A FET switch (U65) on the EVM muxes serial audio lines coming from McASP
between the codec (tlv320aic3106) and the HDMI bridge (sii9022).

By default it uses the codec, but it can be toggled to use the HDMI
bridge by shorting a (J24) header on the board.

Signed-off-by: default avatarJai Luthra <j-luthra@ti.com>
[a-bhatia1: Cosmetic changes]
Signed-off-by: default avatarAradhya Bhatia <a-bhatia1@ti.com>
Link: https://lore.kernel.org/r/20230809084559.17322-5-a-bhatia1@ti.com


Signed-off-by: default avatarNishanth Menon <nm@ti.com>
parent db6e8237

arch/arm64/boot/dts/ti/Makefile

+3 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia.dtb 
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dev.dtb

dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-yavia.dtb

dtb-$(CONFIG_ARCH_K3) += k3-am62-lp-sk.dtb

dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-hdmi-audio.dtbo



# Boards with AM62Ax SoC

dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
@@ -68,6 +69,8 @@ dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb 
dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb



# Enable support for device-tree overlays

DTC_FLAGS_k3-am625-sk += -@

DTC_FLAGS_k3-am62-lp-sk += -@

DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@

DTC_FLAGS_k3-j721e-common-proc-board += -@

DTC_FLAGS_k3-j721s2-common-proc-board += -@

arch/arm64/boot/dts/ti/k3-am62x-sk-hdmi-audio.dtso

0 → 100644
+40 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/**

 * Audio playback via HDMI for AM625-SK and AM62-LP SK.

 *

 * Links:

 * AM625 SK: https://www.ti.com/tool/SK-AM62

 * AM62-LP SK: https://www.ti.com/tool/SK-AM62-LP

 *

 * Copyright (C) 2023 Texas Instruments Incorporated - http://www.ti.com/

 */



/dts-v1/;

/plugin/;



&{/} {

	hdmi_audio: sound-sii9022 {

		compatible = "simple-audio-card";

		simple-audio-card,name = "AM62x-Sil9022-HDMI";

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

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

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



		hdmi_dailink_master: simple-audio-card,cpu {

			sound-dai = <&mcasp1>;

			system-clock-direction-out;

		};



		simple-audio-card,codec {

			sound-dai = <&sii9022>;

		};

	};

};



&mcasp1 {

	auxclk-fs-ratio = <2177>;

};



&codec_audio {

	status = "disabled";

};