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Message-Id: <20240906-dwc-mp-v5-3-ea8ec6774e7b@nxp.com>
Date: Fri, 06 Sep 2024 12:30:39 -0400
From: Frank Li <Frank.Li@....com>
To: Mathias Nyman <mathias.nyman@...el.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Thinh Nguyen <Thinh.Nguyen@...opsys.com>, Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, jun.li@....com,
Frank Li <Frank.Li@....com>, Xu Yang <xu.yang_2@....com>
Subject: [PATCH v5 3/3] usb: dwc3: imx8mp: disable SS_CON and U3 wakeup for
system sleep
From: Li Jun <jun.li@....com>
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: Xu Yang <xu.yang_2@....com>
Signed-off-by: Li Jun <jun.li@....com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Signed-off-by: Frank Li <Frank.Li@....com>
---
change from v2 to v5
- none
---
drivers/usb/dwc3/dwc3-imx8mp.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-imx8mp.c b/drivers/usb/dwc3/dwc3-imx8mp.c
index cfb59f6bf5dde..64c0cd1995aa0 100644
--- a/drivers/usb/dwc3/dwc3-imx8mp.c
+++ b/drivers/usb/dwc3/dwc3-imx8mp.c
@@ -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;
--
2.34.1
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