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Message-ID: <20171107072055.26945-3-ran.wang_1@nxp.com>
Date: Tue, 7 Nov 2017 15:20:55 +0800
From: Ran Wang <ran.wang_1@....com>
To: <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
<devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
Felipe Balbi <balbi@...nel.org>
CC: <robh+dt@...nel.org>, <mark.rutland@....com>, <kishon@...com>,
<catalin.marinas@....com>, <will.deacon@....com>,
<stern@...land.harvard.edu>, <pku.leo@...il.com>,
<mathias.nyman@...el.com>, <gregkh@...uxfoundation.org>,
<suresh.gupta@....com>, <felipe.balbi@...ux.intel.com>,
Shawn Guo <shawnguo@...nel.org>,
Sriram Dash <sriram.dash@....com>,
Li Yang <leoyang.li@....com>,
Hongtao Jia <hongtao.jia@....com>,
Ran Wang <ran.wang_1@....com>
Subject: [PATCH v2 3/3] usb: dwc3: Enable USB 3.0 phy driver
Adds entry point at dwc3 core init function to enable
USB 3.0 PHY driver.
Signed-off-by: Ran Wang <ran.wang_1@....com>
---
Change in v2:
- New file
drivers/usb/dwc3/core.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 03474d3575ab..a9df03c64a7b 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -746,6 +746,8 @@ static int dwc3_core_init(struct dwc3 *dwc)
{
u32 reg;
int ret;
+ int retval;
+ struct phy *phy;
if (!dwc3_core_is_valid(dwc)) {
dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n");
@@ -770,6 +772,19 @@ static int dwc3_core_init(struct dwc3 *dwc)
if (ret)
goto err0;
+ phy = phy_get(dwc->dev, "usb-phy");
+ if (IS_ERR(phy)) {
+ retval = PTR_ERR(phy);
+ if (retval == -EPROBE_DEFER)
+ dev_dbg(dwc->dev, "usb-phy no found\n");
+ } else {
+ retval = phy_init(phy);
+ if (retval) {
+ phy_put(phy);
+ dev_dbg(dwc->dev, "phy_init() error!\n");
+ }
+ }
+
ret = dwc3_core_soft_reset(dwc);
if (ret)
goto err0;
--
2.14.1
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