# Re: \[PATCH 5/6\] powerpc/fsl-pci: Add pci inbound/outbound PM support

- From: Kumar Gala \<hidden\>
- Date: 2012-07-27 13:24:29 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2012/07/9470544
- Thread: https://ratatoskr.run/linuxppc-dev/2012/07/9470407/t.md

```text

On Jul 24, 2012, at 5:20 AM, Jia Hongtao wrote:

> Power supply for PCI inbound/outbound window registers is off when =
system
> go to deep-sleep state. We save the values of registers before suspend
> and restore to registers after resume.
>=20
> Signed-off-by: Jiang Yutang <redacted>
> Signed-off-by: Jia Hongtao <redacted>
> Signed-off-by: Li Yang <redacted>
> ---
> arch/powerpc/include/asm/pci-bridge.h |    2 +-
> arch/powerpc/sysdev/fsl_pci.c         |  121 =
+++++++++++++++++++++++++++++++++
> 2 files changed, 122 insertions(+), 1 deletions(-)

Remind me why we need to save/restore PCI ATMUs, why not just re-parse =
the device tree to restore?

- k=
```