[PATCH v4 0/9] rockchip: Fix PCIe and NVMe support on RK3568

[Jonas Karlman]

This series fixes and enables PCIe and NVMe support on RK3568.

Patch 1 adds a dev_read_addr_size_index_ptr function.
Patch 2-3 fixes main issue in the driver to be usable on RK3568.
Patch 4 fixes a long wait time during probe when no device is attached.
Patch 5 disable BARs of the root complex that could claim the entire
memory region during PCI autoconfig.
Patch 6 adds support for the gpios prop to the fixed regulators driver.
Patch 7 adds a missing clock to the clock driver.
Patch 8 enables PCIe and NVMe support on rk3568-rock-3a.
Patch 9 updates the device tree with new reg and ranges values.

I have tested that a Samsung 970 EVO NVMe is detected on a ROCK 3A,

  BusDevFun  VendorId   DeviceId   Device Class       Sub-Class
  01.00.00   0x1d87     0x3566     Bridge device           0x04
  02.00.00   0x144d     0xa808     Mass storage controller 0x08

and I have also verified that the network controller continues to be
detected on a ROCK 5B.

  BusDevFun  VendorId   DeviceId   Device Class       Sub-Class
  00.00.00   0x1d87     0x3588     Bridge device           0x04
  01.00.00   0x10ec     0x8125     Network controller      0x00

Changes in v4:
- Replace "Hide BARs of the root complex" with "Disable unused BARs of
  the root complex" patch, based on vendor commit 1f4523203c2a ("driver:
  pci: rockchip: Disable RC BAR0 and BAR1")

Changed in v3:
- Rebased on master branch, all dependencies has been merged.
- Remove rk3568-rock-3a pcie2x1 workaround added in v2, basic reference
  counting of gpio regulators series has been merged.
- Enable options for AHCI/SCSI on rk3568-rock-3a.
- Collect r-b tags.

Changes in v2:
- Rebased on custodians/u-boot-rockchip master branch and the defconfig
  and spi v2 series at [1].
- Drop dependency on basic reference counting of gpio regulators series,
  pcie2x1 is disabled for rk3568-rock-3a to avoid a system freeze due to
  disable of a shared vpcie3v3-supply regulator while in use by pcie3x2.
- Add and use dev_read_addr_size_index_ptr function.
- Update commit messages.
- Collect r-b tags.

This series can also be found at [2].

[1] https://patchwork.ozlabs.org/project/uboot/cover/20230517182624.1765359-1-jonas@kwiboo.se/
[2] https://github.com/Kwiboo/u-boot-rockchip/commits/rk3568-pcie-v4

Jon Lin (1):
  pci: pcie_dw_rockchip: Disable unused BARs of the root complex

Jonas Karlman (8):
  core: read: add dev_read_addr_size_index_ptr function
  pci: pcie_dw_rockchip: Get config region from reg prop
  pci: pcie_dw_rockchip: Use regulator_set_enable_if_allowed
  pci: pcie_dw_rockchip: Speed up link probe
  regulator: fixed: Add support for gpios prop
  rockchip: clk: clk_rk3568: Add CLK_PCIEPHY2_REF support
  rockchip: rk3568-rock-3a: Enable PCIe and NVMe support
  rockchip: rk356x: Update PCIe config, IO and memory regions

 arch/arm/dts/rk3568-rock-3a-u-boot.dtsi | 14 ++++
 arch/arm/dts/rk3568.dtsi                | 14 ++--
 arch/arm/dts/rk356x.dtsi                |  7 +-
 configs/rock-3a-rk3568_defconfig        |  9 +++
 drivers/clk/rockchip/clk_rk3568.c       |  1 +
 drivers/core/read.c                     | 11 +++
 drivers/pci/pcie_dw_common.c            | 10 ++-
 drivers/pci/pcie_dw_rockchip.c          | 98 +++++++++++++++----------
 drivers/power/regulator/fixed.c         |  4 +-
 include/dm/read.h                       | 21 ++++++
 10 files changed, 135 insertions(+), 54 deletions(-)

-- 
2.41.0