Re: [PATCH v2 4/4] PCI: imx: Add PME_Turn_Off support

[Philipp Zabel]

Hi Lorenzo,

On Fri, 2018-10-05 at 11:29 +0100, Lorenzo Pieralisi wrote:
> On Thu, Oct 04, 2018 at 04:34:30PM +0000, Leonard Crestez wrote:
> > When the root complex suspends it must send a PME_Turn_Off TLP.
> > Implement this by asserting the "turnoff" reset.
> > 
> > On imx7d this functionality is part of the SRC and exposed through the
> > linux reset-controller subsystem. On imx6 equivalent bits are in the
> > IOMUXC GPR area which the imx6-pcie driver accesses directly.
> 
> Nit: I am merging the series, please define what SRC and GPR are so
> that I can update the commit log accordingly, it must be clear to
> anyone reading it.

SRC is the System Reset Controller, which controls reset signals to all
kinds of devices, among them the PCIe PHY.

IOMUXC GPR is a General Purpose Register range in the IOMUXC (pinmux
controller) that is used to control various signals all over the SoC.

regards
Philipp