diff options
| author | Leonard Crestez <leonard.crestez@nxp.com> | 2018-07-19 17:02:10 +0300 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2018-10-05 12:00:35 +0100 |
| commit | f4e833ba2a955bc15c1ccaa5b0b3c2a0d7989bca (patch) | |
| tree | 6837d8a73f76dfd371476a380ea14f423e91829f /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py | |
| parent | 3aedf7e135b55cb74a62c0be79a86384f76e5724 (diff) | |
PCI: imx: Add PME_Turn_Off support
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 System Reset Controller (SRC)
and is exposed through the linux reset-controller subsystem.
On imx6 equivalent bits are in the IOMUXC pinmux controller General
Purpose Register (GPR) area which the imx6-pcie driver accesses
directly.
This is only for imx7d right now but it's deliberately implemented as an
optional reset, ignoring the chip variant:
* Older dtbs won't have this reset so it will be ignored.
* Future chips might also expose this as a reset controller.
For example imx8m (not yet supported) has the exact same
PCIE_CTRL_APPS_TURNOFF bit in the same location.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py')
0 files changed, 0 insertions, 0 deletions