From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lukasz Majewski Date: Mon, 8 Apr 2019 23:55:24 +0200 Subject: [U-Boot] [PATCH 08/16] usb: dwc2: force reset assert before to probe the driver In-Reply-To: <1553870544-15734-9-git-send-email-patrick.delaunay@st.com> References: <1553870544-15734-1-git-send-email-patrick.delaunay@st.com> <1553870544-15734-9-git-send-email-patrick.delaunay@st.com> Message-ID: <20190408235524.73c815e7@jawa> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Fri, 29 Mar 2019 15:42:16 +0100 Patrick Delaunay wrote: > 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; Reviewed-by: Lukasz Majewski Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma at denx.de -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 488 bytes Desc: OpenPGP digital signature URL: