Hi Claus, Claus H. Stovgaard wrote: > On Tue, 2019-05-07 at 11:09 +0200, Claus H. Stovgaard wrote: >> When combining dwc3 with an redriver for a USB Type-C device >> solution, it >> sometimes have problems with leaving U1/U2 for certain hosts, >> resulting in >> link training errors and reconnects. This create an interface via >> configfs for disabling U1/U2, enabling a workaround for devices based >> on >> dwc3. >> > Sorry messed up a bit with a missing cover letter. > This feature relates to Anurag patch [1] and a thread [2] from earlier > > Where Anurags patch focus on setting U1/U2 latency in the BOS > descriptor from the devicetree, this patch focuses on having a configfs > interface for forcing the UDC (here the dwc3) to not enable U1/U2 and > reject the SET_SEL(U1/U2). > > Looking forward to input. > > [1] https://urldefense.proofpoint.com/v2/url?u=https-3A__www.spinics.net_lists_linux-2Dusb_msg179732.html&d=DwIDaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=u9FYoxKtyhjrGFcyixFYqTjw1ZX0VsG2d8FCmzkTY-w&m=wKdyWmYpbW791LAm7rYwvFYx5E0bjENyXZzHvK4vyFo&s=es7kki6iuLJUp2rJnzP9alXKyfJPNSfyxTVCKKDd_rQ&e= > [2] https://urldefense.proofpoint.com/v2/url?u=https-3A__www.spinics.net_lists_linux-2Dusb_msg179393.html&d=DwIDaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=u9FYoxKtyhjrGFcyixFYqTjw1ZX0VsG2d8FCmzkTY-w&m=wKdyWmYpbW791LAm7rYwvFYx5E0bjENyXZzHvK4vyFo&s=cFTmO9wPf7b6TZxFUAAIJM0Z_wM1ttNIc1rct0uR6co&e= > > I'm not sure who will submit the patch to make change to DWC3 for disabling U1/U2 (Anurag or you), but can you split your patch between dwc3 and configfs. Thanks, Thinh
