[PATCH 02/17] arm64: dts: imx91-11x11-evk: Add board muxes to select between PDM and MQS1
From: Chancel Liu <hidden>
Date: 2026-08-14 07:20:46
Also in:
imx, linux-devicetree, lkml
Subsystem:
arm/freescale imx / mxc / layerscape arm architecture, the rest · Maintainers:
Frank Li, Sascha Hauer, Linus Torvalds
From: Chancel Liu <redacted> PDM has pin conflict with MQS1. Add GPIO-controlled board muxes to route shared signals between PDM and MQS1. Signed-off-by: Chancel Liu <redacted> --- .../boot/dts/freescale/imx91-11x11-evk.dts | 21 ++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
index 5716febb5a50..4d1ada6a3942 100644
--- a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts@@ -41,6 +41,25 @@ chosen { stdout-path = &lpuart1; }; + pdm_mqs1_mux: mux-controller-0 { + compatible = "gpio-mux"; + #mux-control-cells = <0>; + #mux-state-cells = <1>; + mux-gpios = <&adp5585 2 GPIO_ACTIVE_HIGH>; + }; + + pinctrl-gpiomux { + compatible = "pinctrl-multiplexer"; + + mqs1_fun: mqs1-grp { + mux-states = <&pdm_mqs1_mux 1>; + }; + + pdm_fun: pdm-grp { + mux-states = <&pdm_mqs1_mux 0>; + }; + }; + reg_vref_1v8: regulator-adc-vref { compatible = "regulator-fixed"; regulator-max-microvolt = <1800000>;
@@ -484,7 +503,7 @@ bluetooth { &micfil { pinctrl-names = "default", "sleep"; - pinctrl-0 = <&pinctrl_pdm>; + pinctrl-0 = <&pinctrl_pdm>, <&pdm_fun>; pinctrl-1 = <&pinctrl_pdm_sleep>; assigned-clocks = <&clk IMX93_CLK_PDM>; assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
--
2.50.1