The dailink_master label was placed on the codec sub-node instead of
the CPU sub-node, configuring the codec as I2S bitclock/frame master
with SAI2 as slave. On this board, BCLK and LRCLK are wired the other
way around: SAI2 must be bus master, with the codec as I2S slave.

Move dailink_master to the CPU sub-node so SAI2 drives BCLK and LRCLK,
fixing broken audio on the PHYTEC phyBOARD-Pollux-i.MX8MP board with
PEB-AV-10 Audio/Video expansion board. Also remove the spurious clocks
property from the codec sub-node, which had no effect in this topology.

Fixes: 7012f551081f ("arm64: dts: imx8mp pollux: add expansion board overlay")
Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
---
Changes in v2:
- reword commit message to avoid topology confusion

Link to v1: https://lore.kernel.org/all/20260827065556.2326079-1-primoz.fiser@norik.com/

 .../boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi
index bb740f845855..8957b24a7ad2 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi
@@ -77,13 +77,12 @@ sound {
 			"MIC3R", "Microphone Jack",
 			"Microphone Jack", "Mic Bias";
 
-		simple-audio-card,cpu {
+		dailink_master: simple-audio-card,cpu {
 			sound-dai = <&sai2>;
 		};
 
-		dailink_master: simple-audio-card,codec {
+		simple-audio-card,codec {
 			sound-dai = <&codec>;
-			clocks = <&clk IMX8MP_CLK_SAI2>;
 		};
 	};
 };
-- 
2.34.1

From: Frank Li <Frank.Li@nxp.com>


On Mon, 31 Aug 2026 07:12:22 +0200, Primoz Fiser wrote:
> The dailink_master label was placed on the codec sub-node instead of
> the CPU sub-node, configuring the codec as I2S bitclock/frame master
> with SAI2 as slave. On this board, BCLK and LRCLK are wired the other
> way around: SAI2 must be bus master, with the codec as I2S slave.
> 
> Move dailink_master to the CPU sub-node so SAI2 drives BCLK and LRCLK,
> fixing broken audio on the PHYTEC phyBOARD-Pollux-i.MX8MP board with
> PEB-AV-10 Audio/Video expansion board. Also remove the spurious clocks
> property from the codec sub-node, which had no effect in this topology.
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: imx8mp-phyboard-pollux-peb-av-10: Fix SAI master assignment
      commit: 1c3f5701bc0ff5cbe56bdae76157047d47051d44

Best regards,
-- 
Frank Li <Frank.Li@nxp.com>

> The dailink_master label was placed on the codec sub-node instead of
> the CPU sub-node, configuring the codec as I2S bitclock/frame master
> with SAI2 as slave. On this board, BCLK and LRCLK are wired the other
> way around: SAI2 must be bus master, with the codec as I2S slave.
> 
> Move dailink_master to the CPU sub-node so SAI2 drives BCLK and LRCLK,
> fixing broken audio on the PHYTEC phyBOARD-Pollux-i.MX8MP board with
> PEB-AV-10 Audio/Video expansion board. Also remove the spurious clocks
> property from the codec sub-node, which had no effect in this topology.
> 
> Fixes: 7012f551081f ("arm64: dts: imx8mp pollux: add expansion board overlay")
> Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>

Reviewed-by: Chancel Liu <chancel.liu@gmail.com>

Regards,
Chancel Liu

> ---
> Changes in v2:
> - reword commit message to avoid topology confusion
> 
> Link to v1: https://lore.kernel.org/all/20260827065556.2326079-1-primoz.fiser@norik.com/
> 
>  .../boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi
> index bb740f845855..8957b24a7ad2 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi
> @@ -77,13 +77,12 @@ sound {
>  			"MIC3R", "Microphone Jack",
>  			"Microphone Jack", "Mic Bias";
>  
> -		simple-audio-card,cpu {
> +		dailink_master: simple-audio-card,cpu {
>  			sound-dai = <&sai2>;
>  		};
>  
> -		dailink_master: simple-audio-card,codec {
> +		simple-audio-card,codec {
>  			sound-dai = <&codec>;
> -			clocks = <&clk IMX8MP_CLK_SAI2>;
>  		};
>  	};
>  };