Commit 4664b738 authored by Li Jun's avatar Li Jun Committed by Greg Kroah-Hartman
Browse files

usb: dwc3: imx8mp: disable SS_CON and U3 wakeup for system sleep 



SS_CON and U3 wakeup need 'ref_clk' on. iMX8MP turn off it while system
sleep, So disable these wakeup source and only enable DP/DM wakeup source
for host mode.

Reviewed-by: default avatarXu Yang <xu.yang_2@nxp.com>
Signed-off-by: default avatarLi Jun <jun.li@nxp.com>
Acked-by: default avatarThinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: default avatarFrank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240906-dwc-mp-v5-3-ea8ec6774e7b@nxp.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a9400f19

drivers/usb/dwc3/dwc3-imx8mp.c

+9 −6
Original line number Diff line number Diff line
@@ -97,7 +97,8 @@ static void imx8mp_configure_glue(struct dwc3_imx8mp *dwc3_imx) 
	writel(value, dwc3_imx->glue_base + USB_CTRL1);

}



static void dwc3_imx8mp_wakeup_enable(struct dwc3_imx8mp *dwc3_imx)

static void dwc3_imx8mp_wakeup_enable(struct dwc3_imx8mp *dwc3_imx,

				      pm_message_t msg)

{

	struct dwc3	*dwc3 = platform_get_drvdata(dwc3_imx->dwc3);

	u32		val;
@@ -107,12 +108,14 @@ static void dwc3_imx8mp_wakeup_enable(struct dwc3_imx8mp *dwc3_imx) 


	val = readl(dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);



	if ((dwc3->current_dr_role == DWC3_GCTL_PRTCAP_HOST) && dwc3->xhci)

		val |= USB_WAKEUP_EN | USB_WAKEUP_SS_CONN |

		       USB_WAKEUP_U3_EN | USB_WAKEUP_DPDM_EN;

	else if (dwc3->current_dr_role == DWC3_GCTL_PRTCAP_DEVICE)

	if ((dwc3->current_dr_role == DWC3_GCTL_PRTCAP_HOST) && dwc3->xhci) {

		val |= USB_WAKEUP_EN | USB_WAKEUP_DPDM_EN;

		if (PMSG_IS_AUTO(msg))

			val |= USB_WAKEUP_SS_CONN | USB_WAKEUP_U3_EN;

	} else {

		val |= USB_WAKEUP_EN | USB_WAKEUP_VBUS_EN |

		       USB_WAKEUP_VBUS_SRC_SESS_VAL;

	}



	writel(val, dwc3_imx->hsio_blk_base + USB_WAKEUP_CTRL);

}
@@ -277,7 +280,7 @@ static int dwc3_imx8mp_suspend(struct dwc3_imx8mp *dwc3_imx, pm_message_t msg) 


	/* Wakeup enable */

	if (PMSG_IS_AUTO(msg) || device_may_wakeup(dwc3_imx->dev))

		dwc3_imx8mp_wakeup_enable(dwc3_imx);

		dwc3_imx8mp_wakeup_enable(dwc3_imx, msg);



	dwc3_imx->pm_suspended = true;