linux-kernel - [PATCH] arm64: dts: qcom: qrb5165-rb5: add compressed playback support

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Message-ID: <20250228162308.388818-1-alexey.klimov@linaro.org>
Date: Fri, 28 Feb 2025 16:23:08 +0000
From: Alexey Klimov <alexey.klimov@...aro.org>
To: andersson@...nel.org,
	konradybcio@...nel.org
Cc: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	srinivas.kandagatla@...aro.org,
	linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: qcom: qrb5165-rb5: add compressed playback support

Audio DSP supports compressed playback on this SoC. It is required
to add compressed DAI and separate MultimeMedia DAI link to enable this.

Fcplay or cplay tools from tinycompress can playback, say, mp3 files:
fcplay -c 0 -d 3 test.mp3

Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
---
 arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
index 7afa5acac3fc..dcb7dca20415 100644
--- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
+++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
@@ -1018,6 +1018,12 @@ dai@1 {
 	dai@2 {
 		reg = <2>;
 	};
+
+	dai@3 {
+		direction = <Q6ASM_DAI_RX>;
+		is-compress-dai;
+		reg = <3>;
+	};
 };
 
 &sdhc_2 {
@@ -1044,7 +1050,8 @@ &sound {
 		"VA DMIC1", "vdd-micb",
 		"MM_DL1",  "MultiMedia1 Playback",
 		"MM_DL2",  "MultiMedia2 Playback",
-		"MultiMedia3 Capture", "MM_UL3";
+		"MultiMedia3 Capture", "MM_UL3",
+		"MM_DL4", "MultiMedia4 Playback";
 
 	mm1-dai-link {
 		link-name = "MultiMedia1";
@@ -1067,6 +1074,14 @@ cpu {
 		};
 	};
 
+	mm4-dai-link {
+		link-name = "MultiMedia4";
+
+		cpu {
+			sound-dai = <&q6asmdai MSM_FRONTEND_DAI_MULTIMEDIA4>;
+		};
+	};
+
 	hdmi-dai-link {
 		link-name = "HDMI Playback";
 		cpu {
-- 
2.47.2