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Date:   Sun, 14 Apr 2019 17:46:21 -0700
From:   Andrey Smirnov <>
Cc:     Andrey Smirnov <>,
        Lorenzo Pieralisi <>,
        Bjorn Helgaas <>,
        Fabio Estevam <>,
        Chris Healy <>,
        Lucas Stach <>,
        Leonard Crestez <>,
        "A.s. Dong" <>,
        Richard Zhu <>,,,
Subject: [PATCH v4 00/11] i.MX6, DesignWare PCI improvements


This is the series containing various small improvements that I made
while reading the code and researching commit history of pci-imx6.c
and pcie-designware*.c files. All changes are optional, so commits
that don't seem like an improvement can be easily dropped. Hopefully
each patch is self-explanatory.

I tested this series on i.MX6Q, i.MX7D and i.MX8MQ.

Feedback is welcome!

Andrey Smirnov

Chagnes since [v3]:

    - Collected Reviewed-by from Lucas for most of the patches

    - Converted "PCI: imx6: Replace calls to udelay() with
      usleep_range()" to "PCI: imx6: Use usleep_range() in
    - Converted "PCI: imx6: Remove redundant debug tracing" to "PCI:
      imx6: Drop imx6_pcie_wait_for_link()"
    - Converted all of the callers of pcie_phy_poll_ack() to use
      true/false in "PCI: imx6: Simplify pcie_phy_poll_ack()"

Changes since [v2]:

    - All non i.MX6 patches dropped, since they were accepted as a
      seprarte series
    - Series rebased on latest 'dwc-pci' branch of PCI tree
    - Patches "PCI: imx6: Use flags to indicate support for suspend"
      and "PCI: imx6: Replace calls to udelay() with usleep_range()"
      added to the series

Changes since [v1]:

  - Dropped "PCI: imx6: Drop imx6_pcie_link_up()" due to the matter
    already having been addressed by "PCI: imx6: Fix link training
    status detection in link up check" from Trent Piepho

  - Changed "designware" -> "dwc" for all subject lines

  - Collected Acked-by's from Gustavo Pimentel


Andrey Smirnov (11):
  PCI: imx6: Simplify imx7d_pcie_wait_for_phy_pll_lock()
  PCI: imx6: Drop imx6_pcie_wait_for_link()
  PCI: imx6: Return -ETIMEOUT from imx6_pcie_wait_for_speed_change()
  PCI: imx6: Remove PCIE_PL_PFLR_* constants
  PCI: dwc: imx6: Share PHY debug register definitions
  PCI: imx6: Make use of BIT() in constant definitions
  PCI: imx6: Simplify bit operations in PHY functions
  PCI: imx6: Simplify pcie_phy_poll_ack()
  PCI: imx6: Restrict PHY register data to 16-bit
  PCI: imx6: Use flags to indicate support for suspend
  PCI: imx6: Use usleep_range() in imx6_pcie_enable_ref_clk()

 drivers/pci/controller/dwc/pci-imx6.c        | 143 ++++++++-----------
 drivers/pci/controller/dwc/pcie-designware.c |  12 +-
 drivers/pci/controller/dwc/pcie-designware.h |   3 +
 3 files changed, 62 insertions(+), 96 deletions(-)


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