On Fri, 23 May 2014, vichy wrote: > hi all: > Sorry for not making my description more clearer. > in ehci controller, > 1. is it possible to know the period bandwidth in a frame from sys or > other additional configuration? The information is available in debugfs, in /sys/kernel/debug/usb/ehci/.../bandwidth. > 2. is it possible to know how many bits in SMASK and CMASK are > assigned to 1 in a frame? Do you mean how bits in SMASK and CMASK are set to 1 in a QH or sITD? The SMASK and CMASK values are provided in /sys/kernel/debug/usb/ehci/.../periodic. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
