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| author | Herve Codina <herve.codina@bootlin.com> | 2024-10-14 14:46:30 +0200 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2024-10-24 12:09:33 +0200 |
| commit | 185686beb464996bc587e8ae1eee61f01bee080e (patch) | |
| tree | a99e639076a7064bdf5011798649227448fd4a66 /drivers/misc/Kconfig | |
| parent | c0260e2b0ed824a36e99c6a9ec143a336eb37e59 (diff) | |
| download | lwn-185686beb464996bc587e8ae1eee61f01bee080e.tar.gz lwn-185686beb464996bc587e8ae1eee61f01bee080e.zip | |
misc: Add support for LAN966x PCI device
Add a PCI driver that handles the LAN966x PCI device using a device-tree
overlay. This overlay is applied to the PCI device DT node and allows to
describe components that are present in the device.
The memory from the device-tree is remapped to the BAR memory thanks to
"ranges" properties computed at runtime by the PCI core during the PCI
enumeration.
The PCI device itself acts as an interrupt controller and is used as the
parent of the internal LAN966x interrupt controller to route the
interrupts to the assigned PCI INTx interrupt.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> # quirks.c
Link: https://lore.kernel.org/r/20241014124636.24221-2-herve.codina@bootlin.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/misc/Kconfig')
| -rw-r--r-- | drivers/misc/Kconfig | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 3fe7e2a9bd29..902c306bc972 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -610,6 +610,30 @@ config MARVELL_CN10K_DPI To compile this driver as a module, choose M here: the module will be called mrvl_cn10k_dpi. +config MCHP_LAN966X_PCI + tristate "Microchip LAN966x PCIe Support" + depends on PCI + select OF + select OF_OVERLAY + select IRQ_DOMAIN + help + This enables the support for the LAN966x PCIe device. + + This is used to drive the LAN966x PCIe device from the host system + to which it is connected. The driver uses a device tree overlay to + load other drivers to support for LAN966x internal components. + + Even if this driver does not depend on those other drivers, in order + to have a fully functional board, the following drivers are needed: + - fixed-clock (COMMON_CLK) + - lan966x-oic (LAN966X_OIC) + - lan966x-cpu-syscon (MFD_SYSCON) + - lan966x-switch-reset (RESET_MCHP_SPARX5) + - lan966x-pinctrl (PINCTRL_OCELOT) + - lan966x-serdes (PHY_LAN966X_SERDES) + - lan966x-miim (MDIO_MSCC_MIIM) + - lan966x-switch (LAN966X_SWITCH) + source "drivers/misc/c2port/Kconfig" source "drivers/misc/eeprom/Kconfig" source "drivers/misc/cb710/Kconfig" |