There can be systems which does not have a external usb_phy, so get
usb_phy only if usb-phy property is added in the case of dt boot or if
platform_data indicates the presence of PHY. Also remove checking if
return value is -ENXIO since it's now changed to always enable usb_phy layer.
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
drivers/usb/dwc3/Kconfig | 1 +
drivers/usb/dwc3/core.c | 60 +++++++++++++++++---------------------
drivers/usb/dwc3/platform_data.h | 1 +
3 files changed, 28 insertions(+), 34 deletions(-)
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index f969ea2..cfc16dd 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -2,6 +2,7 @@ config USB_DWC3
tristate "DesignWare USB3 DRD Core Support"
depends on (USB || USB_GADGET) && GENERIC_HARDIRQS && HAS_DMA
depends on EXTCON
+ select USB_PHY
select USB_XHCI_PLATFORM if USB_SUPPORT && USB_XHCI_HCD
help
Say Y or M here if your system has a Dual Role SuperSpeed
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 474162e..428c29e 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -387,16 +387,38 @@ static int dwc3_probe(struct platform_device *pdev)
if (node) {
dwc->maximum_speed = of_usb_get_maximum_speed(node);
- dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0);
- dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1);
+ if (of_property_read_bool(node, "usb-phy")) {
+ dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev,
+ "usb-phy", 0);
+ if (IS_ERR(dwc->usb2_phy))
+ return PTR_ERR(dwc->usb2_phy);
+ dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev,
+ "usb-phy", 1);
+ if (IS_ERR(dwc->usb3_phy))
+ return PTR_ERR(dwc->usb3_phy);
+ } else {
+ dwc->usb2_phy = NULL;
+ dwc->usb3_phy = NULL;
+ }
dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
dwc->dr_mode = of_usb_get_dr_mode(node);
} else if (pdata) {
dwc->maximum_speed = pdata->maximum_speed;
- dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
- dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
+ if (pdata->has_phy) {
+ dwc->usb2_phy = devm_usb_get_phy(dev,
+ USB_PHY_TYPE_USB2);
+ if (IS_ERR(dwc->usb2_phy))
+ return PTR_ERR(dwc->usb2_phy);
+ dwc->usb3_phy = devm_usb_get_phy(dev,
+ USB_PHY_TYPE_USB3);
+ if (IS_ERR(dwc->usb3_phy))
+ return PTR_ERR(dwc->usb3_phy);
+ } else {
+ dwc->usb2_phy = NULL;
+ dwc->usb3_phy = NULL;
+ }
dwc->needs_fifo_resize = pdata->tx_fifo_resize;
dwc->dr_mode = pdata->dr_mode;
@@ -409,36 +431,6 @@ static int dwc3_probe(struct platform_device *pdev)
if (dwc->maximum_speed == USB_SPEED_UNKNOWN)
dwc->maximum_speed = USB_SPEED_SUPER;
- if (IS_ERR(dwc->usb2_phy)) {
- ret = PTR_ERR(dwc->usb2_phy);
-
- /*
- * if -ENXIO is returned, it means PHY layer wasn't
- * enabled, so it makes no sense to return -EPROBE_DEFER
- * in that case, since no PHY driver will ever probe.
- */
- if (ret == -ENXIO)
- return ret;
-
- dev_err(dev, "no usb2 phy configured\n");
- return -EPROBE_DEFER;
- }
-
- if (IS_ERR(dwc->usb3_phy)) {
- ret = PTR_ERR(dwc->usb3_phy);
-
- /*
- * if -ENXIO is returned, it means PHY layer wasn't
- * enabled, so it makes no sense to return -EPROBE_DEFER
- * in that case, since no PHY driver will ever probe.
- */
- if (ret == -ENXIO)
- return ret;
-
- dev_err(dev, "no usb3 phy configured\n");
- return -EPROBE_DEFER;
- }
-
dwc->xhci_resources[0].start = res->start;
dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
DWC3_XHCI_REGS_END;
diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h
index 7db34f0..5a5e068 100644
--- a/drivers/usb/dwc3/platform_data.h
+++ b/drivers/usb/dwc3/platform_data.h
@@ -24,4 +24,5 @@ struct dwc3_platform_data {
enum usb_device_speed maximum_speed;
enum usb_dr_mode dr_mode;
bool tx_fifo_resize;
+ bool has_phy;
};
--
1.7.10.4
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