drivers: ethernet: vsc8541: Fixed inverted reset GPIO

For GPIOs driving active-low signals, such as the VSC8541's reset pin,
they are supposed to be declared as active low in the device tree, and
set to 1 to assert and 0 to clear. Change the driver as such so that it
does not leave the PHY stuck in reset when so configured.

Also changed all in-tree board DTS files for this PHY to properly
declare the reset GPIO as active low.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>

Author: robhancocksed

boards/sensry/ganymed_bob/ganymed_bob_sy120_gbm.dts

@@ -30,7 +30,7 @@
 		reg = <0x0>;
 		status = "okay";
 
-		reset-gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
 
 		microchip,interface-type = "rgmii";
 	};

boards/sensry/ganymed_bob/ganymed_bob_sy120_gen1.dts

@@ -30,7 +30,7 @@
 		reg = <0x0>;
 		status = "okay";
 
-		reset-gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
 
 		microchip,interface-type = "rgmii";
 	};

boards/sensry/ganymed_sk/ganymed_sk_sy120_gbm.dts

@@ -41,7 +41,7 @@
 		reg = <0x0b>;
 		status = "okay";
 
-		reset-gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
 
 		microchip,interface-type = "rgmii";
 	};

boards/sensry/ganymed_sk/ganymed_sk_sy120_gen1.dts

@@ -41,7 +41,7 @@
 		reg = <0x0b>;
 		status = "okay";
 
-		reset-gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
 
 		microchip,interface-type = "rgmii";
 	};

drivers/ethernet/phy/phy_microchip_vsc8541.c

@@ -143,14 +143,14 @@ static int phy_mc_vsc8541_reset(const struct device *dev)
 	}
 
 	/* configure the reset pin */
-	ret = gpio_pin_configure_dt(&cfg->reset_gpio, GPIO_OUTPUT_ACTIVE);
+	ret = gpio_pin_configure_dt(&cfg->reset_gpio, GPIO_OUTPUT_INACTIVE);
 	if (ret < 0) {
 		return ret;
 	}
 
 	for (uint32_t i = 0; i < 2; i++) {
 		/* Start reset */
-		ret = gpio_pin_set_dt(&cfg->reset_gpio, 0);
+		ret = gpio_pin_set_dt(&cfg->reset_gpio, 1);
 		if (ret < 0) {
 			LOG_WRN("failed to set reset gpio");
 			return -EINVAL;
@@ -160,7 +160,7 @@ static int phy_mc_vsc8541_reset(const struct device *dev)
 		k_sleep(K_MSEC(200));
 
 		/* Reset over */
-		gpio_pin_set_dt(&cfg->reset_gpio, 1);
+		gpio_pin_set_dt(&cfg->reset_gpio, 0);
 
 		/* After de-asserting reset, must wait before using the config interface */
 		k_sleep(K_MSEC(200));