Hi Alexandre and James, I too am working with a board that uses the lpc32xx SoC (the lpc3240, to be specific) and has a stotg04 for the USB transceiver instead of the isp1301. I can't get the USB to work. My guess is that I don't have the device tree correct. I could embarrass myself by showing you what combinations I've tried but I thought maybe I'd ask and see if either of you could provide a DT snippet describing how to hook up the stotg04 to the i2cusb. Admittedly I'm quite fuzzy when it comes to device trees. I'm also a bit fuzzy on USB. I want to plug usb sticks into my device (which, by my understanding, is the opposite of OTG). So additionally I want to enable ohci and not usbd? In one DT incantation (the one showing the most promise so far) on startup 'lsusb' shows two usb devices. The moment I plug a USB drive into my device I get: [ 433.268009] usb-ohci 31020000.ohci: controller won't resume [ 433.273603] usb-ohci 31020000.ohci: HC died; cleaning up [ 433.280566] usb 1-1: USB disconnect, device number 2 And afterwards only one device is listed by 'lsusb'. Currently I'm using a 5.0 kernel and a 5.4 kernel, but I could use any kernel (upstream, ideally). In either case, it doesn't seem possible to deselect the isp1301 from the kernel config? It gets selected automatically. If I'm using the stotg04 instead of the isp1301, do I need a way to turn off the isp1301? Best regards, Trevor
