Commit 1fbf4628 authored by Fabio Estevam's avatar Fabio Estevam Committed by Peter Chen
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usb: chipidea: Add support for 'phy-clkgate-delay-us' property 



Add support for the optional 'phy-clkgate-delay-us' property that is
used to describe the delay time between putting PHY into low power mode
and turning off the PHY clock.

Signed-off-by: default avatarLi Jun <jun.li@freescale.com>
Signed-off-by: default avatarFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
parent 3ecb3e09

drivers/usb/chipidea/core.c

+7 −0
Original line number Diff line number Diff line
@@ -688,6 +688,10 @@ static int ci_get_platdata(struct device *dev, 
	if (of_usb_get_maximum_speed(dev->of_node) == USB_SPEED_FULL)

		platdata->flags |= CI_HDRC_FORCE_FULLSPEED;



	if (of_find_property(dev->of_node, "phy-clkgate-delay-us", NULL))

		of_property_read_u32(dev->of_node, "phy-clkgate-delay-us",

				     &platdata->phy_clkgate_delay_us);



	platdata->itc_setting = 1;

	if (of_find_property(dev->of_node, "itc-setting", NULL)) {

		ret = of_property_read_u32(dev->of_node, "itc-setting",
@@ -1121,6 +1125,9 @@ static void ci_controller_suspend(struct ci_hdrc *ci) 
{

	disable_irq(ci->irq);

	ci_hdrc_enter_lpm(ci, true);

	if (ci->platdata->phy_clkgate_delay_us)

		usleep_range(ci->platdata->phy_clkgate_delay_us,

			     ci->platdata->phy_clkgate_delay_us + 50);

	usb_phy_set_suspend(ci->usb_phy, 1);

	ci->in_lpm = true;

	enable_irq(ci->irq);

include/linux/usb/chipidea.h

+1 −0
Original line number Diff line number Diff line
@@ -71,6 +71,7 @@ struct ci_hdrc_platform_data { 
	/* VBUS and ID signal state tracking, using extcon framework */

	struct ci_hdrc_cable		vbus_extcon;

	struct ci_hdrc_cable		id_extcon;

	u32			phy_clkgate_delay_us;

};



/* Default offset of capability registers */

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