usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
index e61d773cf65e71e27a41f3c7d8e5306939d08908..60b12a4a11c8c7fc73b95e75449ece46e1f616ca 100644 (file)
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -229,11 +229,6 @@ static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg)
                        hsotg->phyif = GUSBCFG_PHYIF8;
        }
 
-       if (!hsotg->phy && !hsotg->uphy && !hsotg->plat) {
-               dev_err(hsotg->dev, "no platform data or transceiver defined\n");
-               return -EPROBE_DEFER;
-       }
-
        /* Clock */
        hsotg->clk = devm_clk_get(hsotg->dev, "otg");
        if (IS_ERR(hsotg->clk)) {