Re: [PATCH v2 2/4] PCI: rcar: Support runtime PM link state L1 handling in pcie-rcar

2016-01-06 Thread Wolfram Sang
On Tue, Jan 05, 2016 at 01:00:29PM +, Phil Edworthy wrote: > The R-Car PCIe host controller does not handle L1 ASPM. Instead, the > hardware needs assistance to transition to L1. When the controller > has received a PM_ENTER_L1 DLLP, we can't access a card's config regs > until we have got it o

[PATCH v2 2/4] PCI: rcar: Support runtime PM link state L1 handling in pcie-rcar

2016-01-05 Thread Phil Edworthy
The R-Car PCIe host controller does not handle L1 ASPM. Instead, the hardware needs assistance to transition to L1. When the controller has received a PM_ENTER_L1 DLLP, we can't access a card's config regs until we have got it out of L1 link state. The host controller will handle this as long as it