[PATCH v2] arm64: dts: imx8mp-phyboard-pollux-peb-av-10: Fix SAI master assignment
From: Primoz Fiser
Date: Mon Aug 31 2026 - 01:12:42 EST
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@xxxxxxxxx>
---
Changes in v2:
- reword commit message to avoid topology confusion
Link to v1: https://lore.kernel.org/all/20260827065556.2326079-1-primoz.fiser@xxxxxxxxx/
.../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