[PATCH v3 5/8] arm64: dts: ti: am62x-sk: Add overlay for HDMI audio
Aradhya Bhatia
a-bhatia1 at ti.com
Fri Jul 28 10:34:35 PDT 2023
From: Jai Luthra <j-luthra at ti.com>
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 at ti.com>
[a-bhatia1: Cosmetic changes]
Signed-off-by: Aradhya Bhatia <a-bhatia1 at ti.com>
---
arch/arm64/boot/dts/ti/Makefile | 3 ++
.../boot/dts/ti/k3-am62x-sk-hdmi-audio.dtso | 40 +++++++++++++++++++
2 files changed, 43 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am62x-sk-hdmi-audio.dtso
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 6dd7b6f1d6ab..b814f6c4b860 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -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
@@ -58,3 +59,5 @@ dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb
# Enable support for device-tree overlays
DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@
+DTC_FLAGS_k3-am625-sk += -@
+DTC_FLAGS_k3-am62-lp-sk += -@
diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-hdmi-audio.dtso b/arch/arm64/boot/dts/ti/k3-am62x-sk-hdmi-audio.dtso
new file mode 100644
index 000000000000..43a0ddc123e5
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-hdmi-audio.dtso
@@ -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";
+};
--
2.40.1
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