[PATCH v2 0/7] rockchip: rk3568: Fix use of PCIe bifurcation

Jonas Karlman jonas at kwiboo.se
Wed Aug 2 21:22:39 CEST 2023

This series add support for use of PCIe bifurcation on RK3568, and as a
bonus support for the RK3588 PHY is also included. With PCIe bifurcation
supported it is possible to enable PCIe on more RK3568 boards, e.g. on
NanoPi R5C and NanoPi R5S. This series only include fixing the mini PCIe
slot on Radxa E25.

Most parts of this series was imported almost 1:1 from mainline linux.

Patch 1 fixes configuration of number of lanes in pcie_dw_rockchip.
Patch 2-3 refactor the snps-pcie3 phy driver.
Patch 4 add bifurcation support for RK3568.
Patch 5 add support for RK3588 to snps-pcie3 driver.
Patch 6 fixes use of pcie2x1l0 on ROCK 5B.
Patch 7 enables the mini PCIe slot on Radxa E25.

Changes in v2:
- Fix use of signal from comb PHY on RK3588
- Add fixes tag

The RK3588 PHY part was tested on a ROCK 5B together with device tree
files picked from Sebastian Reichel's rk3588 branch at [1].

Patches in this series is also aviliable at [2].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-misc.git/tree/?h=rk3588
[2] https://github.com/Kwiboo/u-boot-rockchip/commits/rk35xx-pcie-bifurcation-v2

Jonas Karlman (7):
  pci: pcie_dw_rockchip: Configure number of lanes and link width speed
  phy: rockchip: snps-pcie3: Refactor to use clk_bulk API
  phy: rockchip: snps-pcie3: Refactor to use a phy_init ops
  phy: rockchip: snps-pcie3: Add bifurcation support for RK3568
  phy: rockchip: snps-pcie3: Add support for RK3588
  phy: rockchip: naneng-combphy: Use signal from comb PHY on RK3588
  rockchip: rk3568-radxa-e25: Enable pcie3x1 node

 arch/arm/dts/rk3568-radxa-e25-u-boot.dtsi     |  11 +-
 configs/radxa-e25-rk3568_defconfig            |   1 -
 drivers/pci/pcie_dw_rockchip.c                |  58 ++++-
 .../rockchip/phy-rockchip-naneng-combphy.c    |   6 +
 .../phy/rockchip/phy-rockchip-snps-pcie3.c    | 230 ++++++++++++++----
 5 files changed, 241 insertions(+), 65 deletions(-)


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