From: Honghui Zhang <honghui.zhang@xxxxxxxxxxxx>
MediaTek's PCIe host controller has two generation HWs, the new
generation HW has two root ports, it shares most probing flow with the
legacy controller. But the read/write config space logical is different
from the legacy controller. The per-port register must be touched for
read/write config space, And the per-port register base are in separate
address space.
This patchset abstract the common probing flow, and add support for the
new generation controller.
Changes since v2:
- Split the Gen2 training change to a separate patch.
- Simplify the config_read/write logical and get rid of mtk_pcie_find_port.
- Using bus->sysdata to simplify the code.
- Rebase to commit 65b83b13204a ("PCI: mediatek: Explicitly request exclusive
reset control")[1].
- Fix some misspells.
- Add review tags in commit message.
Changes since v1:
- Fix build warnings in arm arch.
- Using SoC specific compatible instead of generic compatible.
- Add devicetree binding example for mt7622.
- Unified the register define names with PCIE_ prefix.
- Cleanup some un-necessary condition determine when starup port.
- minor code cleanups.
[1] https://patchwork.kernel.org/patch/9852591/
Honghui Zhang (1):
PCI: mediatek: Add a structure to abstract the controller generations
Ryder Lee (5):
PCI: mediatek: Using readl_poll_timeout to wait Gen2 training
PCI: mediatek: switch to use platform_get_resource_byname()
dt-bindings: PCI: rename and cleanup MediaTek binding text
PCI: mediatek: Add new generation controller support
dt-bindings: PCI: add support for new generation controller
.../bindings/pci/mediatek,mt7623-pcie.txt | 130 -----
.../devicetree/bindings/pci/mediatek-pcie.txt | 284 ++++++++++
drivers/pci/host/Kconfig | 5 +-
drivers/pci/host/pcie-mediatek.c | 571 +++++++++++++++++++--
4 files changed, 812 insertions(+), 178 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt
create mode 100644 Documentation/devicetree/bindings/pci/mediatek-pcie.txt
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2.6.4
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