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author | Bjorn Helgaas <bhelgaas@google.com> | 2016-12-06 14:27:59 -0600 |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-12-07 14:34:58 -0600 |
commit | ca5ab37b19dfd1d77787d0474b767ec1185670f4 (patch) | |
tree | 1d00bc7dcb76968199c48c03c0ef730abb7434e6 /drivers/pci/host/Makefile | |
parent | c5d4603961009c39de94725213d8b5420f110f9e (diff) | |
download | linux-stable-ca5ab37b19dfd1d77787d0474b767ec1185670f4.tar.gz linux-stable-ca5ab37b19dfd1d77787d0474b767ec1185670f4.tar.bz2 linux-stable-ca5ab37b19dfd1d77787d0474b767ec1185670f4.zip |
PCI: Explain ARM64 ACPI/MCFG quirk Kconfig and build strategy
Add Makefile comments to explain the Kconfig and build strategy for ARM64
drivers that work around not-quite-ECAM issues. No functional change
intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/host/Makefile')
-rw-r--r-- | drivers/pci/host/Makefile | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/pci/host/Makefile b/drivers/pci/host/Makefile index 6cc84b4f3a4d..bfe3179ae74c 100644 --- a/drivers/pci/host/Makefile +++ b/drivers/pci/host/Makefile @@ -15,7 +15,6 @@ obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone-dw.o pci-keystone.o obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx.o obj-$(CONFIG_PCIE_XILINX_NWL) += pcie-xilinx-nwl.o -obj-$(CONFIG_ARM64) += pci-xgene.o obj-$(CONFIG_PCI_XGENE_MSI) += pci-xgene-msi.o obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o obj-$(CONFIG_PCI_VERSATILE) += pci-versatile.o @@ -25,11 +24,23 @@ obj-$(CONFIG_PCIE_IPROC_PLATFORM) += pcie-iproc-platform.o obj-$(CONFIG_PCIE_IPROC_BCMA) += pcie-iproc-bcma.o obj-$(CONFIG_PCIE_ALTERA) += pcie-altera.o obj-$(CONFIG_PCIE_ALTERA_MSI) += pcie-altera-msi.o -obj-$(CONFIG_ARM64) += pcie-hisi.o obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o -obj-$(CONFIG_ARM64) += pci-thunder-ecam.o -obj-$(CONFIG_ARM64) += pci-thunder-pem.o obj-$(CONFIG_PCIE_ARMADA_8K) += pcie-armada8k.o obj-$(CONFIG_PCIE_ARTPEC6) += pcie-artpec6.o obj-$(CONFIG_PCIE_ROCKCHIP) += pcie-rockchip.o obj-$(CONFIG_VMD) += vmd.o + +# The following drivers are for devices that use the generic ACPI +# pci_root.c driver but don't support standard ECAM config access. +# They contain MCFG quirks to replace the generic ECAM accessors with +# device-specific ones that are shared with the DT driver. + +# The ACPI driver is generic and should not require driver-specific +# config options to be enabled, so we always build these drivers on +# ARM64 and use internal ifdefs to only build the pieces we need +# depending on whether ACPI, the DT driver, or both are enabled. + +obj-$(CONFIG_ARM64) += pcie-hisi.o +obj-$(CONFIG_ARM64) += pci-thunder-ecam.o +obj-$(CONFIG_ARM64) += pci-thunder-pem.o +obj-$(CONFIG_ARM64) += pci-xgene.o |