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From: briannorris@chromium.org (Brian Norris)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] PCI: rockchip: assert PERST# in S3
Date: Thu, 12 Oct 2017 13:52:17 -0700	[thread overview]
Message-ID: <20171012205220.130048-1-briannorris@chromium.org> (raw)

Hi,

This patch series should mostly be self-descriptive, but it's motivated by the
fact that I've found differing requirements from PCIe endpoint makers regarding
the state of PERST# when in system suspend (S3). Additionally, some existing
boards are not especially well suited for holding PERST# low in S3 (e.g., the
pin is driven by a non-PMU GPIO, so it's hard or impossible to keep it
asserted). So the solution is...give it a device tree property!

Brian

Brian Norris (3):
  Documentation/devicetree: Add pcie-reset-suspend property
  of/pci: Add of_pci_get_pcie_reset_suspend() to parse
    pcie-reset-suspend
  PCI: rockchip: Support configuring PERST# state via DT

 Documentation/devicetree/bindings/pci/pci.txt | 11 +++++++++++
 drivers/of/of_pci.c                           | 25 +++++++++++++++++++++++++
 drivers/pci/host/pcie-rockchip.c              |  7 +++++++
 include/linux/of_pci.h                        |  7 +++++++
 4 files changed, 50 insertions(+)

-- 
2.15.0.rc0.271.g36b669edcc-goog

             reply	other threads:[~2017-10-12 20:52 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-12 20:52 Brian Norris [this message]
2017-10-12 20:52 ` [PATCH 1/3] Documentation/devicetree: Add pcie-reset-suspend property Brian Norris
2017-10-13 16:51   ` Bjorn Helgaas
2017-10-17 23:39     ` Brian Norris
2017-10-18  0:56       ` Brian Norris
2017-10-18 16:17       ` Bjorn Helgaas
2017-10-18 20:38         ` Rob Herring
2017-10-12 20:52 ` [PATCH 2/3] of/pci: Add of_pci_get_pcie_reset_suspend() to parse pcie-reset-suspend Brian Norris
2017-10-12 20:52 ` [PATCH 3/3] PCI: rockchip: Support configuring PERST# state via DT Brian Norris
2017-10-12 22:27 ` [PATCH 0/3] PCI: rockchip: assert PERST# in S3 Doug Anderson
2017-10-13  3:15 ` Bjorn Helgaas
2017-10-13  6:27   ` Brian Norris
2017-10-14  0:06     ` Brian Norris

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