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Commit 1b82e4c3 authored by Igor Grinberg's avatar Igor Grinberg Committed by Eric Miao
Browse files

[ARM] pxa/em-x270: fix usb hub power up/reset sequence 



Signed-off-by: default avatarIgor Grinberg <grinberg@compulab.co.il>
Signed-off-by: default avatarMike Rapoport <mike@compulab.co.il>
Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent f4054253

arch/arm/mach-pxa/em-x270.c

+5 −6
Original line number Diff line number Diff line
@@ -497,16 +497,15 @@ static int em_x270_usb_hub_init(void) 
		goto err_free_vbus_gpio;



	/* USB Hub power-on and reset */

	gpio_direction_output(usb_hub_reset, 0);

	gpio_direction_output(usb_hub_reset, 1);

	gpio_direction_output(GPIO9_USB_VBUS_EN, 0);

	regulator_enable(em_x270_usb_ldo);

	gpio_set_value(usb_hub_reset, 1);

	gpio_set_value(usb_hub_reset, 0);

	gpio_set_value(usb_hub_reset, 1);

	regulator_disable(em_x270_usb_ldo);

	regulator_enable(em_x270_usb_ldo);

	gpio_set_value(usb_hub_reset, 1);



	/* enable VBUS */

	gpio_direction_output(GPIO9_USB_VBUS_EN, 1);

	gpio_set_value(usb_hub_reset, 0);

	gpio_set_value(GPIO9_USB_VBUS_EN, 1);



	return 0;