Revert "MIPS: pci: lantiq: restore reset gpio polarity"

BugLink: https://bugs.launchpad.net/bugs/2076435

commit 6e5aee0 upstream.

This reverts commit 277a036.

While fixing old boards with broken DTs, this change will break
newer ones with correct gpio polarity annotation.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>

Author: tsbogend

arch/mips/pci/pci-lantiq.c

@@ -124,14 +124,14 @@ static int ltq_pci_startup(struct platform_device *pdev)
 		clk_disable(clk_external);
 
 	/* setup reset gpio used by pci */
-	reset_gpio = devm_gpiod_get_optional(&pdev->dev, "reset", GPIOD_ASIS);
+	reset_gpio = devm_gpiod_get_optional(&pdev->dev, "reset",
+					     GPIOD_OUT_LOW);
 	error = PTR_ERR_OR_ZERO(reset_gpio);
 	if (error) {
 		dev_err(&pdev->dev, "failed to request gpio: %d\n", error);
 		return error;
 	}
 	gpiod_set_consumer_name(reset_gpio, "pci_reset");
-	gpiod_direction_output(reset_gpio, 1);
 
 	/* enable auto-switching between PCI and EBU */
 	ltq_pci_w32(0xa, PCI_CR_CLK_CTRL);
@@ -194,10 +194,10 @@ static int ltq_pci_startup(struct platform_device *pdev)
 
 	/* toggle reset pin */
 	if (reset_gpio) {
-		gpiod_set_value_cansleep(reset_gpio, 0);
+		gpiod_set_value_cansleep(reset_gpio, 1);
 		wmb();
 		mdelay(1);
-		gpiod_set_value_cansleep(reset_gpio, 1);
+		gpiod_set_value_cansleep(reset_gpio, 0);
 	}
 	return 0;
 }