arm64: dts: verdin-imx8mm: fix dev board audio playback

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@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
index 73cc3fafa01808bb49ffb51a6eb8f7debb7e162e..b2bcd22821702073ae513e394ddb1422bb9d7514 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi
@@ -11,6 +11,7 @@
                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",