Am Dienstag, 26. Juli 2011, 11:44:01 schrieben Sie: > Le Tue, 26 Jul 2011 16:57:29 +0800, > Ming Lei <tom.leiming@xxxxxxxxx> a écrit : > > > But what Thomas is wanting is that the max power provided by > > individual port in root hub can be customized, which is not supported > > by current kernel, but looks like not difficult to do it. > > No, I want to set a global power budget for both ports that are on > the root hub of my platform. I have a max budget of 700 mA for both > ports, so I can accept one 500 mA device on one port and another 200 mA > device on another port, but not two 500 mA devices. These requirements are identical in consequence. So you have a budget per hub of 700mA, which translates into 500mA per port (limit from the spec) But as soon as you configure a device to actually use 500mA the limit per port would have to drop to 200mA, correct? Regards Oliver -- - - - SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg) Maxfeldstraße 5 90409 Nürnberg Germany - - - -- 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
