[PATCH v2 09/17] arm64: dts: imx943-evk: Add board muxes to select between CAN1/PDM and MQS1/MIC

[Chancel Liu]

From: Chancel Liu <chancel.liu@xxxxxxx>

CAN1 has pin conflict with PDM, and MQS1 has pin conflict with the
MICFIL function. Replace static gpio-hog settings with GPIO-controlled
board muxes using the pinctrl-multiplexer framework, so that the
conflicting functions can be selected at runtime.

Update the MICFIL node to select MICFIL function via PINCTRL.

Signed-off-by: Chancel Liu <chancel.liu@xxxxxxx>
---
 arch/arm64/boot/dts/freescale/imx943-evk.dts | 49 ++++++++++++++------
 1 file changed, 35 insertions(+), 14 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx943-evk.dts b/arch/arm64/boot/dts/freescale/imx943-evk.dts
index 64660f94f4e9..07b782ef698a 100644
--- a/arch/arm64/boot/dts/freescale/imx943-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx943-evk.dts
@@ -38,6 +38,40 @@ bt_sco_codec: bt-sco-codec {
 		#sound-dai-cells = <1>;
 	};
 
+	can1_pdm_mux: mux-controller-0 {
+		compatible = "gpio-mux";
+		#mux-control-cells = <0>;
+		#mux-state-cells = <1>;
+		mux-gpios = <&pcal6416_i2c6_u44 12 GPIO_ACTIVE_HIGH>;
+	};
+
+	mqs1_mic_mux: mux-controller-1 {
+		compatible = "gpio-mux";
+		#mux-control-cells = <0>;
+		#mux-state-cells = <1>;
+		mux-gpios = <&pcal6416_i2c3_u171 11 GPIO_ACTIVE_HIGH>;
+	};
+
+	pinctrl-gpiomux {
+		compatible = "pinctrl-multiplexer";
+
+		can1_fun: can1-grp {
+			mux-states = <&can1_pdm_mux 1>;
+		};
+
+		mic_fun: mic-grp {
+			mux-states = <&mqs1_mic_mux 0>;
+		};
+
+		mqs1_fun: mqs1-grp {
+			mux-states = <&mqs1_mic_mux 1>;
+		};
+
+		pdm_fun: pdm-grp {
+			mux-states = <&can1_pdm_mux 0>;
+		};
+	};
+
 	flexcan2_phy: can-phy0 {
 		compatible = "nxp,tjr1443";
 		#phy-cells = <0>;
@@ -535,12 +569,6 @@ audio-pwren-hog {
 					gpio-hog;
 					output-high;
 				};
-
-				mqs-mic-sel-hog {
-					gpios = <11 GPIO_ACTIVE_HIGH>;
-					gpio-hog;
-					output-low;
-				};
 			};
 		};
 
@@ -651,13 +679,6 @@ pcal6416_i2c6_u44: gpio@20 {
 				#gpio-cells = <2>;
 				gpio-controller;
 
-				/* pdm selection */
-				can-pdm-sel-hog {
-					gpios = <12 GPIO_ACTIVE_HIGH>;
-					gpio-hog;
-					output-low;
-				};
-
 				sai3-sel-hog {
 					gpios = <11 GPIO_ACTIVE_HIGH>;
 					gpio-hog;
@@ -710,7 +731,7 @@ &micfil {
 	assigned-clock-rates = <3932160000>,
 			       <3612672000>, <393216000>,
 			       <361267200>, <49152000>;
-	pinctrl-0 = <&pinctrl_pdm>;
+	pinctrl-0 = <&pinctrl_pdm>, <&mic_fun>, <&pdm_fun>;
 	pinctrl-names = "default";
 	status = "okay";
 };
-- 
2.50.1