On Sat, Jun 30, 2007 at 11:53:25PM +0200, Michael Buesch wrote: > > When the interface is down (or driver removed), the BroadCom 44xx card > > remains > > powered on, and both its MAC and PHY is using up power. > > This patch makes the driver issue a MAC_CTRL_PHY_PDOWN when the interface > > is halted, and does a partial chip reset turns off the activity LEDs too. > > > > Applies to 2.6.22-rc6, or current git head. > > > > Tested on a Broadcom BCM4401-B0 card, it saves ~0.5W (measured using > > powertop). > > Hm, I was going to measure the real power advantage with a > PCI-extender card. But my B44B0 card doesn't seem to work in > that extender card. It works perfectly fine sticked directly into > the motherboard, though, and other cards like a BCM4318 work in > the extender, too. > Not sure what this is. > The extender has an application note about nonworking cards in the > extender and a too big resistor on the board IDSEL pin being the > cause of this.
Does the card show up in lspci at all? IDSEL drive strength issues should only affect config space accesses. Does the extender board have a PCI-PCI bridge on it? (If not, there's not really any reason to resistively couple the IDSEL line to the host, since the host should take care of that.) > Maybe I can try with another machine tomorrow. That would only make a difference if there is no PCI-PCI bridge on the extender board. If the extender resistively couples the host's IDSEL line, you might see different results on a different host bridge, since different host bridges can use different numbers of IDSEL stepping cycles. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
