[PATCH v1] arm64: dts: verdin-imx8mm: fix dev board audio playback

[Francesco Dolcini]

From: Emanuele Ghidoli <emanuele.ghidoli at toradex.com>

Set optional `simple-audio-card,mclk-fs` parameter to ensure a proper
clock to the nau8822 audio codec. Without this change with an audio
stream rate of 44.1 kHz the playback is faster.
Set the MCLK at the right frequency, codec can properly use it to
generate 44.1 kHz I2S-FS.

Fixes: 6a57f224f734 ("arm64: dts: freescale: add initial support for verdin imx8m mini")
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli at toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini at toradex.com>
---
 arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
index 73cc3fafa018..b2bcd2282170 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
@@ -11,6 +11,7 @@ sound_card: sound-card {
 		simple-audio-card,bitclock-master = <&dailink_master>;
 		simple-audio-card,format = "i2s";
 		simple-audio-card,frame-master = <&dailink_master>;
+		simple-audio-card,mclk-fs = <256>;
 		simple-audio-card,name = "imx8mm-nau8822";
 		simple-audio-card,routing =
 			"Headphones", "LHP",
-- 
2.25.1