From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
ALSA SoC has many type of Generic Audio Card driver (Simple Audio Card,
Audio Graph Card, Audio Graph Card2), and Renesas/Kuninori Morimoto want
to test these.
Generic Audio Card driver had been requested on ALSA SoC.
It has many type of device connection method, and historically,
requested connection support range of generic driver have been
upgraded.
Upgrading connection support range itself was possible on generic
driver, but could not implemented, because we need to keep compatibility
on Device-Tree. This is one of the reason why we have many type of
Generic Audio Card driver.
ULCB/KF is good board to test these.
Kuninori has been testing these Generic Audio Card driver by using his
local patch to switching drivers. But it is good idea to upstream these
from information sharing point of view, because DT setting is complex.
It can be good sample for user. This patch is one of them.
>From normal user point of view who don't need to test the driver,
it should keep as-is, nothing changed.
This patch adds "Audio Graph Card" DT setting file for ULCB/KF.
We can switch to use it if ulcb.dtsi / ulcb-kf.dtsi were updated.
Because it needs "switching driver", not "add extra feature",
it doesn't use Device-Tree overlay.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
.../dts/renesas/ulcb-audio-graph-card.dtsi | 85 ++++++++++++++++++
.../dts/renesas/ulcb-kf-audio-graph-card.dtsi | 88 +++++++++++++++++++
2 files changed, 173 insertions(+)
create mode 100644 arch/arm64/boot/dts/renesas/ulcb-audio-graph-card.dtsi
create mode 100644 arch/arm64/boot/dts/renesas/ulcb-kf-audio-graph-card.dtsi
diff --git a/arch/arm64/boot/dts/renesas/ulcb-audio-graph-card.dtsi b/arch/arm64/boot/dts/renesas/ulcb-audio-graph-card.dtsi
new file mode 100644
index 000000000000..8a1ca100cef8
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/ulcb-audio-graph-card.dtsi
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree for ULCB + Audio Graph Card
+ *
+ * Copyright (C) 2022 Renesas Electronics Corp.
+ */
+
+/*
+ * (A) CPU0 ------ ak4613
+ * (B) CPU1 ------ HDMI
+ *
+ * (A) aplay -D plughw:0,0 xxx.wav
+ * (B) aplay -D plughw:0,1 xxx.wav
+ *
+ * (A) arecord -D plughw:0,0 xxx.wav
+ */
+
+/ {
+ sound_card: sound {
+ compatible = "audio-graph-card";
+ label = "rcar-sound";
+
+ dais = <&rsnd_port0 /* (A) ak4613 */
+ &rsnd_port1 /* (B) HDMI0 */
+ >;
+ };
+};
+
+&ak4613 {
+ #sound-dai-cells = <0>;
+
+ port {
+ /*
+ * (A) CPU0 <-> ak4613
+ */
+ ak4613_endpoint: endpoint {
+ remote-endpoint = <&rsnd_for_ak4613>;
+ };
+ };
+};
+
+&hdmi0 {
+ ports {
+ port@2 {
+ /*
+ * (B) CPU1 <-> HDMI
+ */
+ dw_hdmi0_snd_in: endpoint {
+ remote-endpoint = <&rsnd_for_hdmi>;
+ };
+ };
+ };
+};
+
+&rcar_sound {
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ rsnd_port0: port@0 {
+ /*
+ * (A) CPU0 <-> ak4613
+ */
+ reg = <0>;
+ rsnd_for_ak4613: endpoint {
+ remote-endpoint = <&ak4613_endpoint>;
+ bitclock-master;
+ frame-master;
+ playback = <&ssi0>, <&src0>, <&dvc0>;
+ capture = <&ssi1>, <&src1>, <&dvc1>;
+ };
+ };
+ rsnd_port1: port@1 {
+ /*
+ * (B) CPU1 <-> HDMI
+ */
+ reg = <1>;
+ rsnd_for_hdmi: endpoint {
+ remote-endpoint = <&dw_hdmi0_snd_in>;
+ bitclock-master;
+ frame-master;
+ playback = <&ssi2>;
+ };
+ };
+ };
+};
diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf-audio-graph-card.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf-audio-graph-card.dtsi
new file mode 100644
index 000000000000..fcdd2e949b5f
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/ulcb-kf-audio-graph-card.dtsi
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree for ULCB + Kingfisher + Audio Graph Card
+ *
+ * Copyright (C) 2022 Renesas Electronics Corp.
+ */
+
+/*
+ * (A) CPU0 ------ ak4613
+ * (B) CPU1 ------ HDMI
+ * (C) CPU2 ------ PCM3168A-p (8ch)
+ * (D) CPU3 ------ PCM3168A-c (6ch)
+ *
+ * (A) aplay -D plughw:0,0 xxx.wav
+ * (B) aplay -D plughw:0,1 xxx.wav
+ * (C) aplay -D plughw:0,2 xxx.wav
+ *
+ * (A) arecord -D plughw:0,0 xxx.wav
+ * (D) arecord -D plughw:0,3 xxx.wav
+ */
+
+&sound_card {
+ dais = <&rsnd_port0 /* (A) ak4613 */
+ &rsnd_port1 /* (B) HDMI0 */
+ &rsnd_port2 /* (C) pcm3168a playback */
+ &rsnd_port3 /* (D) pcm3168a capture */
+ >;
+};
+
+&pcm3168a {
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ mclk-fs = <512>;
+ /*
+ * (C) CPU2 <-> PCM3168A-p
+ */
+ port@0 {
+ reg = <0>;
+ pcm3168a_endpoint_p: endpoint {
+ remote-endpoint = <&rsnd_for_pcm3168a_play>;
+ clocks = <&clksndsel>;
+ };
+ };
+ /*
+ * (D) CPU3 <-> PCM3168A-c
+ */
+ port@1 {
+ reg = <1>;
+ pcm3168a_endpoint_c: endpoint {
+ remote-endpoint = <&rsnd_for_pcm3168a_capture>;
+ clocks = <&clksndsel>;
+ };
+ };
+ };
+};
+
+&rcar_sound {
+ ports {
+ /* rsnd_port0/1 are defined in ulcb.dtsi */
+ /*
+ * (C) CPU2 <-> PCM3168A-p
+ */
+ rsnd_port2: port@2 {
+ reg = <2>;
+ rsnd_for_pcm3168a_play: endpoint {
+ remote-endpoint = <&pcm3168a_endpoint_p>;
+ bitclock-master;
+ frame-master;
+ dai-tdm-slot-num = <8>;
+ playback = <&ssi3>;
+ };
+ };
+ /*
+ * (D) CPU3 <-> PCM3168A-c
+ */
+ rsnd_port3: port@3 {
+ reg = <3>;
+ rsnd_for_pcm3168a_capture: endpoint {
+ remote-endpoint = <&pcm3168a_endpoint_c>;
+ bitclock-master;
+ frame-master;
+ dai-tdm-slot-num = <6>;
+ capture = <&ssi4>;
+ };
+ };
+ };
+};
--
2.25.1
