[PATCH v4 0/6] PCI: imx: Initial imx7d suspend/resume support
lorenzo.pieralisi at arm.com
Mon Sep 17 08:09:41 PDT 2018
On Tue, Aug 14, 2018 at 07:50:14PM +0300, Leonard Crestez wrote:
> On imx7d the pcie-phy power domain is turned off in suspend and this can
> make the system hang on resume when attempting any read from PCI.
> Fix this by adding PM_SLEEP support to the imx6 pci driver. This is
> currently only enabled for imx7d but the suspend/resume sequence also
> applies to other socs.
> V3 of this series was reviewed by Lucas but stalled because the merge
> window opened.
> There was also some confusion about how to deal with the dependence on
> commit 26fce0557fa6 ("reset: imx7: Fix always writing bits as 0"). To
> clarify: both patch 2 and 26fce0557fa6 are required to fix imx7d suspend
> but merging one without the other shouldn't cause other issues.
> V4 adds 4 more patches with PME_Turn_Off support on top, using a new
> reset bit. I generally try to keep series short but in this case some
> planning might be needed to get patches into 4.20.
> Since the new reset is treated as optional with old DTB there should be
> again no problem if reset and pci are merged out of order.
> Shawn/Philipp/Lorenzo: Would it make sense to merge this series through a
> single specific tree, such as the one for imx?
This series is a bit of a mixture of multiple things hard to discern
(actually I already merged patch 2 and patch 1 seems completely
I would take the series through the PCI tree but I need an ACK for
patches 5 and 6, please let me know how you want to handle it.
> Link to v3: https://lkml.org/lkml/2018/7/24/713
> Leonard Crestez (6):
> Revert "ARM: dts: imx7d: Invert legacy PCI irq mapping"
> PCI: imx: Initial imx7d pm support
> reset: imx7: Add PCIE_CTRL_APPS_TURNOFF
> dt-bindings: imx6q-pcie: Add turnoff reset for imx7d
> ARM: dts: imx7d: Add turnoff reset
> PCI: imx: Add PME_Turn_Off support
> .../bindings/pci/fsl,imx6q-pcie.txt | 1 +
> arch/arm/boot/dts/imx7d.dtsi | 17 ++-
> drivers/pci/controller/dwc/pci-imx6.c | 112 +++++++++++++++++-
> drivers/reset/reset-imx7.c | 1 +
> include/dt-bindings/reset/imx7-reset.h | 4 +-
> 5 files changed, 123 insertions(+), 12 deletions(-)
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