5 bool "Device Tree and Open Firmware support"
7 This option enables the device tree infrastructure.
8 It is automatically selected by platforms that need it or can
9 be enabled manually for unittests, overlays or
15 bool "Device Tree runtime unit tests"
17 select OF_EARLY_FLATTREE
20 This option builds in test cases for the device tree infrastructure
21 that are executed once at boot time, and the results dumped to the
24 If unsure, say N here, but this option is safe to enable.
32 config OF_EARLY_FLATTREE
39 # Hardly any platforms need this. It is safe to select, but only do so if you
42 bool "Support for dynamic device trees" if OF_UNITTEST
44 On some platforms, the device tree can be manipulated at runtime.
45 While this option is selected automatically on such platforms, you
46 can enable it manually to improve device tree unit test coverage.
50 depends on !SPARC && HAS_IOMEM
51 select OF_ADDRESS_PCI if PCI
58 depends on !SPARC && IRQ_DOMAIN
68 OpenFirmware MDIO bus (Ethernet PHY) accessors
74 OpenFirmware PCI bus accessors
78 depends on OF_PCI && OF_IRQ
80 OpenFirmware PCI IRQ routing helpers
86 config OF_RESERVED_MEM
87 depends on OF_EARLY_FLATTREE
90 Helpers to allow for reservation of memory regions
96 bool "Device Tree overlays"
100 Overlays are a method to dynamically modify part of the kernel's
101 device tree with dynamically loaded data.
102 While this option is selected automatically when needed, you can
103 enable it manually to improve device tree unit test coverage.