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

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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: Jai Luthra <j-luthra@ti.com>
[a-bhatia1: Cosmetic changes]
Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Link: https://lore.kernel.org/r/20230809084559.17322-5-a-bhatia1@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>
This commit is contained in:
Jai Luthra 2023-08-09 14:15:57 +05:30 committed by Nishanth Menon
parent db6e8237cf
commit b50ccab9e0
2 changed files with 43 additions and 0 deletions
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3
arch/arm64/boot/dts/ti/Makefile
View File

@ -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 += -@

40
arch/arm64/boot/dts/ti/k3-am62x-sk-hdmi-audio.dtso Normal file
View File

@ -0,0 +1,40 @@
// 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";
};