[PATCH v12 00/11] Add support for Hikey 970 PCIe

Mauro Carvalho Chehab
2021-09-28T07:34:30Z

The pcie-kirin PCIe driver contains internally a PHY interface for
Kirin 960, but it misses support for Kirin 970.

Patch1 contains a PHY for Kirin 970 PCIe.

The remaining patches add support for Kirin 970 at the pcie-kirin driver, and
add the needed logic to compile it as module and to allow to dynamically
remove the driver in runtime.

Tested on HiKey970:

# lspci -D -PP
0000:00:00.0 PCI bridge: Huawei Technologies Co., Ltd. Device 3670 (rev 01)
0000:00:00.0/01:00.0 PCI bridge: PLX Technology, Inc. PEX 8606 6 Lane, 6 Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
0000:00:00.0/01:00.0/02:01.0 PCI bridge: PLX Technology, Inc. PEX 8606 6 Lane, 6 Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
0000:00:00.0/01:00.0/02:04.0 PCI bridge: PLX Technology, Inc. PEX 8606 6 Lane, 6 Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
0000:00:00.0/01:00.0/02:05.0 PCI bridge: PLX Technology, Inc. PEX 8606 6 Lane, 6 Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
0000:00:00.0/01:00.0/02:07.0 PCI bridge: PLX Technology, Inc. PEX 8606 6 Lane, 6 Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
0000:00:00.0/01:00.0/02:09.0 PCI bridge: PLX Technology, Inc. PEX 8606 6 Lane, 6 Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba)
0000:00:00.0/01:00.0/02:01.0/03:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd Device a809
0000:00:00.0/01:00.0/02:07.0/06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)

Tested on HiKey960:

# lspci -D
0000:00:00.0 PCI bridge: Huawei Technologies Co., Ltd. Device 3660 (rev 01)

---

v12:
- Change a comment at patch 1 to not use c99 style.

v11:
- patch 5 changed to use the right PCIe topology
- all other patches are identical to v10.

v10:
- patch 1: dropped magic numbers from PHY driver
- patch 5: allow pcie child nodes without reset-gpios
- all other patches are identical to v9.

v9:
- Did some cleanups at patches 1 and 5

Mauro Carvalho Chehab (11):
phy: HiSilicon: Add driver for Kirin 970 PCIe PHY
PCI: kirin: Reorganize the PHY logic inside the driver
PCI: kirin: Add support for a PHY layer
PCI: kirin: Use regmap for APB registers
PCI: kirin: Add support for bridge slot DT schema
PCI: kirin: Add Kirin 970 compatible
PCI: kirin: Add MODULE_* macros
PCI: kirin: Allow building it as a module
PCI: kirin: Add power_off support for Kirin 960 PHY
PCI: kirin: fix poweroff sequence
PCI: kirin: Allow removing the driver

drivers/pci/controller/dwc/Kconfig | 2 +-
drivers/pci/controller/dwc/pcie-kirin.c | 644 +++++++++++++-----
drivers/phy/hisilicon/Kconfig | 10 +
drivers/phy/hisilicon/Makefile | 1 +
drivers/phy/hisilicon/phy-hi3670-pcie.c | 845 ++++++++++++++++++++++++
5 files changed, 1354 insertions(+), 148 deletions(-)
create mode 100644 drivers/phy/hisilicon/phy-hi3670-pcie.c

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2.31.1