1*cbbc70a8SMauro Carvalho Chehab.. SPDX-License-Identifier: GPL-2.0 2*cbbc70a8SMauro Carvalho Chehab 3*cbbc70a8SMauro Carvalho Chehab========================== 4*cbbc70a8SMauro Carvalho ChehabLink Power Managent Policy 5*cbbc70a8SMauro Carvalho Chehab========================== 6*cbbc70a8SMauro Carvalho Chehab 7*cbbc70a8SMauro Carvalho ChehabThis parameter allows the user to set the link (interface) power management. 8*cbbc70a8SMauro Carvalho ChehabThere are 3 possible options: 9*cbbc70a8SMauro Carvalho Chehab 10*cbbc70a8SMauro Carvalho Chehab===================== ===================================================== 11*cbbc70a8SMauro Carvalho ChehabValue Effect 12*cbbc70a8SMauro Carvalho Chehab===================== ===================================================== 13*cbbc70a8SMauro Carvalho Chehabmin_power Tell the controller to try to make the link use the 14*cbbc70a8SMauro Carvalho Chehab least possible power when possible. This may 15*cbbc70a8SMauro Carvalho Chehab sacrifice some performance due to increased latency 16*cbbc70a8SMauro Carvalho Chehab when coming out of lower power states. 17*cbbc70a8SMauro Carvalho Chehab 18*cbbc70a8SMauro Carvalho Chehabmax_performance Generally, this means no power management. Tell 19*cbbc70a8SMauro Carvalho Chehab the controller to have performance be a priority 20*cbbc70a8SMauro Carvalho Chehab over power management. 21*cbbc70a8SMauro Carvalho Chehab 22*cbbc70a8SMauro Carvalho Chehabmedium_power Tell the controller to enter a lower power state 23*cbbc70a8SMauro Carvalho Chehab when possible, but do not enter the lowest power 24*cbbc70a8SMauro Carvalho Chehab state, thus improving latency over min_power setting. 25*cbbc70a8SMauro Carvalho Chehab===================== ===================================================== 26