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