[0/8] rockchip: Add PCIe host support

Thanks to Patrick for initial work done on this.

This series support PCIe host controller support
on rockchip rk3399 platform.

Works well on rk3399 boards like rock960, nanopc-t4 
and roc-kr3399-pc-mezzanine board as Gen1 configurable 
host.

It has dependency with v5.7-rc1 dts(i) sync series[1]

[1] https://patchwork.ozlabs.org/project/uboot/cover/20200425105319.12009-1-jagan at amarulasolutions.com/

Any inputs?
Jagan.

Jagan Teki (8):
  iopoll: Add dealy to read poll
  iopoll: Add readl_poll_sleep_timeout
  clk: rk3399: Enable PCIE_PHY clock
  clk: rk3399: Disable PCIE_PHY clock
  pci: Add Rockchip PCIe controller driver
  pci: Add Rockchip PCIe PHY controller driver
  rockchip: Enable PCIe/M.2 on rk3399 board w/ M.2
  rockchip: Enable PCIe/M.2 on rock960 board

 arch/arm/dts/rk3399-u-boot.dtsi             |   1 +
 board/vamrs/rock960_rk3399/rock960-rk3399.c |  20 +
 configs/nanopc-t4-rk3399_defconfig          |   4 +
 configs/roc-pc-mezzanine-rk3399_defconfig   |   4 +
 configs/rock960-rk3399_defconfig            |   5 +
 drivers/clk/rockchip/clk_rk3399.c           |  32 ++
 drivers/pci/Kconfig                         |   8 +
 drivers/pci/Makefile                        |   1 +
 drivers/pci/pcie_rockchip.c                 | 484 ++++++++++++++++++++
 drivers/pci/pcie_rockchip.h                 | 142 ++++++
 drivers/pci/pcie_rockchip_phy.c             | 205 +++++++++
 include/linux/iopoll.h                      |  23 +-
 12 files changed, 920 insertions(+), 9 deletions(-)
 create mode 100644 drivers/pci/pcie_rockchip.c
 create mode 100644 drivers/pci/pcie_rockchip.h
 create mode 100644 drivers/pci/pcie_rockchip_phy.c