openwrt/target/linux/bcm27xx/patches-5.4/950-0351-rpi-cirrus-wm5102-overlay-fix-pinctrl-configuration.patch

From 01f45f7d4403e40f28f626296bec3ccae1b1f65b Mon Sep 17 00:00:00 2001
From: Matthias Reichl <hias@horus.com>
Date: Sat, 30 Nov 2019 23:10:26 +0100
Subject: [PATCH] rpi-cirrus-wm5102-overlay: fix pinctrl configuration

Separate GPIOs connected to wm5102 and wm8804 into 2 pinctrl
blocks and properly reference them from the DT nodes to have
correct pinmux owners.

Setup spi0 to use only one CS line on GPIO7 so that GPIO8 is
no longer claimed by spi0 but can be used by wm8804.

Signed-off-by: Matthias Reichl <hias@horus.com>
---
 .../overlays/rpi-cirrus-wm5102-overlay.dts    | 40 ++++++++++++++-----
 1 file changed, 30 insertions(+), 10 deletions(-)

--- a/arch/arm/boot/dts/overlays/rpi-cirrus-wm5102-overlay.dts
+++ b/arch/arm/boot/dts/overlays/rpi-cirrus-wm5102-overlay.dts
@@ -18,19 +18,31 @@
 	fragment@1 {
 		target = <&gpio>;
 		__overlay__ {
-			wlf_pins: wlf_pins {
-				brcm,pins = <17 22 27 8>;
+			wlf_5102_pins: wlf_5102_pins {
+				brcm,pins = <17 22 27>;
 				brcm,function = <
 					BCM2835_FSEL_GPIO_OUT
 					BCM2835_FSEL_GPIO_OUT
 					BCM2835_FSEL_GPIO_IN
-					BCM2835_FSEL_GPIO_OUT
 				>;
 			};
+			wlf_8804_pins: wlf_8804_pins {
+				brcm,pins = <8>;
+				brcm,function = <BCM2835_FSEL_GPIO_OUT>;
+			};
 		};
 	};
 
 	fragment@2 {
+		target = <&spi0_cs_pins>;
+		__overlay__ {
+			brcm,pins = <7>;
+			brcm,function = <BCM2835_FSEL_GPIO_OUT>;
+		};
+	};
+
+
+	fragment@3 {
 		target-path = "/";
 		__overlay__ {
 			rpi_cirrus_reg_1v8: rpi_cirrus_reg_1v8 {
@@ -43,30 +55,34 @@
 		};
 	};
 
-	fragment@3 {
+	fragment@4 {
 		target = <&spidev0>;
 		__overlay__ {
 			status = "disabled";
 		};
 	};
 
-	fragment@4 {
+	fragment@5 {
 		target = <&spidev1>;
 		__overlay__ {
 			status = "disabled";
 		};
 	};
 
-	fragment@5 {
+	fragment@6 {
 		target = <&spi0>;
 		__overlay__ {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			status = "okay";
+			cs-gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
 
-			wm5102@1{
+			wm5102@0{
 				compatible = "wlf,wm5102";
-				reg = <1>;
+				reg = <0>;
+
+				pinctrl-names = "default";
+				pinctrl-0 = <&wlf_5102_pins>;
 
 				spi-max-frequency = <500000>;
 
@@ -123,7 +139,7 @@
 		};
 	};
 
-	fragment@6 {
+	fragment@7 {
 		target = <&i2c1>;
 		__overlay__ {
 			status = "okay";
@@ -134,6 +150,10 @@
 				compatible = "wlf,wm8804";
 				reg = <0x3b>;
 				status = "okay";
+
+				pinctrl-names = "default";
+				pinctrl-0 = <&wlf_8804_pins>;
+
 				PVDD-supply = <&vdd_3v3_reg>;
 				DVDD-supply = <&vdd_3v3_reg>;
 				wlf,reset-gpio = <&gpio 8 GPIO_ACTIVE_HIGH>;
@@ -141,7 +161,7 @@
 		};
 	};
 
-	fragment@7 {
+	fragment@8 {
 		target = <&sound>;
 		__overlay__ {
 			compatible = "wlf,rpi-cirrus";