From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
To: Felipe Balbi <balbi@kernel.org>, linux-usb@vger.kernel.org
Cc: John Youn <john.youn@synopsys.com>
Subject: [1/3] usb: dwc3: Set GUSB2PHYCFG.ENBLSLPM
Date: Wed, 7 Nov 2018 18:10:30 -0800 [thread overview]
Message-ID: <188eaa661bef09ee4c6b505d45aba606a8c8ff8e.1541642865.git.thinhn@synopsys.com> (raw)
GUSB2PHYCFG.ENBLSLPM enables the controller to assert low power signals
to the PHY. Unless disabled via device property, explicitly set
GUSB2PHYCFG.ENBLSLPM as it may not be set by default.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
---
drivers/usb/dwc3/core.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index becfbb87f791..a4068a7b95dd 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -661,6 +661,8 @@ static int dwc3_phy_setup(struct dwc3 *dwc)
if (dwc->dis_enblslpm_quirk)
reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM;
+ else
+ reg |= DWC3_GUSB2PHYCFG_ENBLSLPM;
if (dwc->dis_u2_freeclk_exists_quirk)
reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS;
reply other threads:[~2018-11-08 2:10 UTC|newest]
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