Commit bae696a2 authored by John Crispin's avatar John Crispin
Browse files

MIPS: lantiq: improve pci reset gpio handling 



We need to make sure that the reset gpio is available and also set a sane
default state.

Signed-off-by: default avatarJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4817/
parent d0c550dc

arch/mips/pci/pci-lantiq.c

+10 −2
Original line number Diff line number Diff line
@@ -129,8 +129,16 @@ static int ltq_pci_startup(struct platform_device *pdev) 


	/* setup reset gpio used by pci */

	reset_gpio = of_get_named_gpio(node, "gpio-reset", 0);

	if (gpio_is_valid(reset_gpio))

		devm_gpio_request(&pdev->dev, reset_gpio, "pci-reset");

	if (gpio_is_valid(reset_gpio)) {

		int ret = devm_gpio_request(&pdev->dev,

						reset_gpio, "pci-reset");

		if (ret) {

			dev_err(&pdev->dev,

				"failed to request gpio %d\n", reset_gpio);

			return ret;

		}

		gpio_direction_output(reset_gpio, 1);

	}



	/* enable auto-switching between PCI and EBU */

	ltq_pci_w32(0xa, PCI_CR_CLK_CTRL);