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config DTC
bool
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menuconfig OF
bool "Device Tree and Open Firmware support"
help
This option enables the device tree infrastructure.
It is automatically selected by platforms that need it or can
be enabled manually for unittests, overlays or
compile-coverage.
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if OF
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config OF_UNITTEST
bool "Device Tree runtime unit tests"
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depends on OF_IRQ && OF_EARLY_FLATTREE
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select OF_RESOLVE
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help
This option builds in test cases for the device tree infrastructure
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that are executed once at boot time, and the results dumped to the
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console.
If unsure, say N here, but this option is safe to enable.
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config OF_FLATTREE
bool
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select DTC
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select LIBFDT
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select CRC32
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config OF_EARLY_FLATTREE
bool
select OF_FLATTREE
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config OF_PROMTREE
bool
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# Hardly any platforms need this. It is safe to select, but only do so if you
# need it.
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config OF_DYNAMIC
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bool "Support for dynamic device trees" if OF_UNITTEST
help
On some platforms, the device tree can be manipulated at runtime.
While this option is selected automatically on such platforms, you
can enable it manually to improve device tree unit test coverage.
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config OF_ADDRESS
def_bool y
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depends on !SPARC
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select OF_ADDRESS_PCI if PCI
config OF_ADDRESS_PCI
bool
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config OF_IRQ
def_bool y
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depends on !SPARC && IRQ_DOMAIN
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config OF_NET
depends on NETDEVICES
def_bool y
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config OF_MDIO
def_tristate PHYLIB
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depends on PHYLIB
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help
OpenFirmware MDIO bus (Ethernet PHY) accessors
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config OF_PCI
def_tristate PCI
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depends on PCI
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help
OpenFirmware PCI bus accessors
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config OF_PCI_IRQ
def_tristate PCI
depends on OF_PCI && OF_IRQ
help
OpenFirmware PCI IRQ routing helpers
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config OF_MTD
depends on MTD
def_bool y
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config OF_RESERVED_MEM
depends on OF_EARLY_FLATTREE
bool
help
Helpers to allow for reservation of memory regions
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config OF_RESOLVE
bool
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config OF_OVERLAY
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bool "Device Tree overlays"
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select OF_DYNAMIC
select OF_RESOLVE
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help
Overlays are a method to dynamically modify part of the kernel's
device tree with dynamically loaded data.
While this option is selected automatically when needed, you can
enable it manually to improve device tree unit test coverage.
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endif # OF