[PATCH v6 0/4] MT7621 PCIe PHY

[Sergio Paracuellos <sergio.paracuellos@gmail.com>]

This series adds support for the PCIe PHY found in the Mediatek
MT7621 SoC.

There is also a 'mt7621-pci' driver which is the controller part
which is still in staging and is a client of this phy.

Both drivers have been tested together in a gnubee1 board.

This series are rebased on the top of linux-phy:
commit 768a711e2d4b ("phy: samsung: phy-exynos-pcie: fix typo 'tunning'")

Changes in v6:
  - Change definition name to XTAL_MASK to fix its use in one line.
  - Fix XTAL_MASK mask value after use it with 'FIELD_GET'.
  - Add comment in 'mt7621_phy_rmw' about why 'regmap_write_bits'
    cannot be used.
  - Rebase series on the top of 'next' branch of 'linux-phy' tree.

Changes in v5:
  - PATCH 1/4: Recollect Rob's Reviewed-by of bindings.
  - PATCH 4/4: Recollect Greg's Acked-by for removing stuff from
    staging area.
  - Use 'devm_platform_ioremap_resource' instead of using 
    'platform_get_resource' and 'devm_ioremap_resource'.
  - Make Vinod's review comments changes in [0]:
    * Use FIELD_GET and FIELD_PREP apis and avoid multiple *_VAL and
      *_SHIFT custom definitions.
    * Remove phy-read and phy-write internal functions and directly
      call regmap_read and regmap_write in 'mt7621_phy_rmw'.
    * Change some traces from info to debug log level.
    * Note that I have maintained 'mt7621_phy_rmw' instead of use
      'regmap_update_bits'. This is because in order to get a reliable
      boot registers must be written event the contained value in 
      that register is the same. I have preferred doing in this way
      instead of using 'regmap_update_bits_base' passing 'false' for
      async and 'true' for the force write. If this way of using 
      'regmap_update_bits_base' is preferred just let me know.

Changes in v4:
  - Bindings moved from txt to yaml so previous Rob's Reviewed-by
    is not in the new patch with the yaml file.
  - 'phy-cells' property means now if phy is dual-ported.
  - Avoid custom 'xlate' function and properly set registers
    when the phy is dual ported.
  - Add use of 'builtin_platform_driver'.
  - Added a patch including myself as maintainer in the
    MAINTAINERS file.
  - Add a patch removing patch from staging to make easier
    the complete inclusion and avoid possible problems might
    appear in 'linux-next' if the series are included.

Changes in v3:
  - Recollect Rob's Reviewed-by of bindings.
  - Make Kishon Vijay suggested changes in v2:
   (See https://lkml.org/lkml/2019/4/17/53)
  - Kconfig:
    * Add depends on COMPILE_TEST
    * Select REGMAP_MMIO
  - Make use of 'soc_device_attribute' and 'soc_device_match'
  - Use regmap mmio API instead of directly 'readl' and 'writel'.
  - Use 'platform_get_resource' instead of 'of_address_to_resource'.

Changes in v2:
  - Reorder patches to get bindings first in the series.
  - Don't use child nodes in the device tree. Use #phy-cells=1 instead.
  - Update driver code with new 'xlate' function for the new device tree.
  - Minor changes in driver's macros changing some spaces to tabs.

Thanks in advance for your time.

Best regards,
    Sergio Paracuellos

[0]: http://driverdev.linuxdriverproject.org/pipermail/driverdev-devel/2020-November/148864.html

Sergio Paracuellos (4):
  dt-bindings: phy: Add binding for Mediatek MT7621 PCIe PHY
  phy: ralink: Add PHY driver for MT7621 PCIe PHY
  MAINTAINERS: add MT7621 PHY PCI maintainer
  staging: mt7621-pci-phy: remove driver from staging

 .../phy}/mediatek,mt7621-pci-phy.yaml         |   2 +-
 MAINTAINERS                                   |   6 +
 drivers/phy/ralink/Kconfig                    |   8 ++
 drivers/phy/ralink/Makefile                   |   1 +
 .../ralink/phy-mt7621-pci.c}                  | 115 +++++++-----------
 drivers/staging/Kconfig                       |   2 -
 drivers/staging/Makefile                      |   1 -
 drivers/staging/mt7621-pci-phy/Kconfig        |   8 --
 drivers/staging/mt7621-pci-phy/Makefile       |   2 -
 drivers/staging/mt7621-pci-phy/TODO           |   4 -
 10 files changed, 63 insertions(+), 86 deletions(-)
 rename {drivers/staging/mt7621-pci-phy => Documentation/devicetree/bindings/phy}/mediatek,mt7621-pci-phy.yaml (92%)
 rename drivers/{staging/mt7621-pci-phy/pci-mt7621-phy.c => phy/ralink/phy-mt7621-pci.c} (76%)
 delete mode 100644 drivers/staging/mt7621-pci-phy/Kconfig
 delete mode 100644 drivers/staging/mt7621-pci-phy/Makefile
 delete mode 100644 drivers/staging/mt7621-pci-phy/TODO

-- 
2.25.1