Hi all, During my work on ISOC EPs support implementation for USB OTG driver I've met some difficulties - as is written in usb 2.0 spec:
5.12.4.1.2 Synchronous Synchronous endpoints can have their clock system (their notion of time) controlled externally through SOF synchronization. These endpoints must slave their sample clock to the 1 ms SOF tick (by means of a programmable PLL). For high-speed endpoints, the presence of the microframe SOF can be used for tighter frame clock tracking. This syncronization should be done in upper layer than PCD, i.e. in gadget, so I need to send SOF interrupt to gadget driver, which will make synchronization via PLL. I couldn't find a way to do it without extending Gadget API - can somebody tell me if there is method to do it without Gadget API extneding and if yes, where I can find documentation with description of that method. Thanks in advance, Armen Baloyan ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
