[v2,07/11] usb: dwc3: core: enable Suspend bit for USB2/3 PHYs

Message ID 1393357628-5248-1-git-send-email-balbi@ti.com
State New
Headers show

Commit Message

Felipe Balbi Feb. 25, 2014, 7:47 p.m.
That bit still needs to be set for recent versions
of the IP. When necessary, IP will automatically
take PHYs out of suspend.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---

changes since v1:
	wrap code with revision check

 drivers/usb/dwc3/core.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

Patch

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 2864aad..1cf1fb5 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -412,6 +412,16 @@  static int dwc3_core_init(struct dwc3 *dwc)
 
 	dwc3_writel(dwc->regs, DWC3_GCTL, reg);
 
+	if (dwc->revision >= DWC3_REVISION_194A) {
+		reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
+		reg |= DWC3_GUSB3PIPECTL_SUSPHY;
+		dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
+
+		reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
+		reg |= DWC3_GUSB2PHYCFG_SUSPHY;
+		dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
+	}
+
 	ret = dwc3_alloc_scratch_buffers(dwc);
 	if (ret)
 		goto err1;