Hi Marek,
your patch did not help on stable v5.1
[ 3.255963] samsung-usb2-phy 125b0000.exynos-usbphy: 125b0000.exynos-usbphy supply vbus not found, using dummy regulator
[ 4.044547] usbcore: registered new interface driver smsc95xx
[ 4.112261] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.01
[ 4.120363] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 4.127560] usb usb1: Product: EHCI Host Controller
[ 4.132415] usb usb1: Manufacturer: Linux 5.1.0-00005-geb4efae48eb5 ehci_hcd
[ 4.139446] usb usb1: SerialNumber: 12580000.ehci
[ 4.183056] usb3503 0-0008: switched to HUB mode
[ 4.183121] usb3503 0-0008: usb3503_probe: probed in hub mode
[ 4.488344] usb 1-2: new high-speed USB device number 2 using exynos-ehci
[ 4.675605] usb 1-2: New USB device found, idVendor=0424, idProduct=3503, bcdDevice=a1.a0
[ 4.678166] usb 1-2: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 4.686140] usb 1-2: skipping disabled interface 0
root@odroid-x2:~# lsusb
Bus 001 Device 002: ID 0424:3503 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Am 06.05.19 um 15:00 schrieb Marek Szyprowski:
> Samsung Exynos SoCs require to force UTMI width to 8bit, otherwise the
> host side of the shared USB2 PHY doesn't work.
>
> Reported-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> Fixes: 707d80f0a3c5 ("usb: dwc2: gadget: Replace phyif with phy_utmi_width")
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> drivers/usb/dwc2/params.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
> index 6900eea57526..9ece4affb9d4 100644
> --- a/drivers/usb/dwc2/params.c
> +++ b/drivers/usb/dwc2/params.c
> @@ -76,6 +76,7 @@ static void dwc2_set_s3c6400_params(struct dwc2_hsotg *hsotg)
> struct dwc2_core_params *p = &hsotg->params;
>
> p->power_down = 0;
> + p->phy_utmi_width = 8;
> }
>
> static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg)
>
Gruß,
--
Markus Reichl
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