From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick Delaunay Date: Fri, 29 Mar 2019 15:42:16 +0100 Subject: [U-Boot] [PATCH 08/16] usb: dwc2: force reset assert before to probe the driver In-Reply-To: <1553870544-15734-1-git-send-email-patrick.delaunay@st.com> References: <1553870544-15734-1-git-send-email-patrick.delaunay@st.com> Message-ID: <1553870544-15734-9-git-send-email-patrick.delaunay@st.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Reset the hardware to be sure of the device state. Signed-off-by: Patrick Delaunay --- drivers/usb/gadget/dwc2_udc_otg.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c index af16fc1..8169fdb 100644 --- a/drivers/usb/gadget/dwc2_udc_otg.c +++ b/drivers/usb/gadget/dwc2_udc_otg.c @@ -1049,7 +1049,12 @@ static int dwc2_udc_otg_reset_init(struct udevice *dev, if (ret) return ret; - ret = reset_deassert_bulk(resets); + ret = reset_assert_bulk(resets); + + if (!ret) { + udelay(2); + ret = reset_deassert_bulk(resets); + } if (ret) { reset_release_bulk(resets); return ret; -- 2.7.4