From: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Felipe Balbi <balbi@kernel.org>,
Stephen Boyd <swboyd@chromium.org>,
Doug Anderson <dianders@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
Mathias Nyman <mathias.nyman@intel.com>
Cc: <linux-arm-msm@vger.kernel.org>, <linux-usb@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <quic_pkondeti@quicinc.com>,
<quic_ppratap@quicinc.com>,
Sandeep Maheswaram <quic_c_sanm@quicinc.com>
Subject: [PATCH v3] usb: host: xhci-plat: Set XHCI_SKIP_PHY_INIT quirk for DWC3 controller
Date: Wed, 1 Dec 2021 11:45:38 +0530 [thread overview]
Message-ID: <1638339338-6731-2-git-send-email-quic_c_sanm@quicinc.com> (raw)
In-Reply-To: <1638339338-6731-1-git-send-email-quic_c_sanm@quicinc.com>
Set XHCI_SKIP_PHY_INIT quirk to avoid phy initialization twice.
Runtime suspend of phy drivers was failing from DWC3 driver as
runtime usage value is 2 because the phy is initialized from
DWC3 core and HCD core.
DWC3 manages phy in their core drivers.
Set this quirk to avoid phy initialization in HCD core.
Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
---
drivers/usb/host/xhci-plat.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index c1edcc9..9bbd939 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -327,6 +327,9 @@ static int xhci_plat_probe(struct platform_device *pdev)
&xhci->imod_interval);
}
+ if (of_device_is_compatible(pdev->dev.parent->of_node, "snps,dwc3"))
+ xhci->quirks |= XHCI_SKIP_PHY_INIT;
+
hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0);
if (IS_ERR(hcd->usb_phy)) {
ret = PTR_ERR(hcd->usb_phy);
--
2.7.4
next prev parent reply other threads:[~2021-12-01 6:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-01 6:15 [PATCH v3] Skip phy initialization for DWC3 USB Controllers Sandeep Maheswaram
2021-12-01 6:15 ` Sandeep Maheswaram [this message]
2021-12-02 3:17 ` [PATCH v3] usb: host: xhci-plat: Set XHCI_SKIP_PHY_INIT quirk for DWC3 controller Stephen Boyd
2021-12-14 4:47 ` Sandeep Maheswaram
2021-12-15 1:02 ` Stephen Boyd
2021-12-13 13:57 ` Greg Kroah-Hartman
2021-12-02 3:14 ` [PATCH v3] Skip phy initialization for DWC3 USB Controllers Stephen Boyd
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