1# SPDX-License-Identifier: GPL-2.0 2config DTC 3 bool 4 5menuconfig OF 6 bool "Device Tree and Open Firmware support" 7 help 8 This option enables the device tree infrastructure. 9 It is automatically selected by platforms that need it or can 10 be enabled manually for unittests, overlays or 11 compile-coverage. 12 13if OF 14 15config OF_UNITTEST 16 bool "Device Tree runtime unit tests" 17 depends on !SPARC 18 select IRQ_DOMAIN 19 select OF_EARLY_FLATTREE 20 select OF_RESOLVE 21 help 22 This option builds in test cases for the device tree infrastructure 23 that are executed once at boot time, and the results dumped to the 24 console. 25 26 If unsure, say N here, but this option is safe to enable. 27 28config OF_ALL_DTBS 29 bool "Build all Device Tree Blobs" 30 depends on COMPILE_TEST 31 select DTC 32 help 33 This option builds all possible Device Tree Blobs (DTBs) for the 34 current architecture. 35 36 If unsure, say N here, but this option is safe to enable. 37 38config OF_FLATTREE 39 bool 40 select DTC 41 select LIBFDT 42 select CRC32 43 44config OF_EARLY_FLATTREE 45 bool 46 select OF_FLATTREE 47 48config OF_PROMTREE 49 bool 50 51config OF_KOBJ 52 def_bool SYSFS 53 54# Hardly any platforms need this. It is safe to select, but only do so if you 55# need it. 56config OF_DYNAMIC 57 bool "Support for dynamic device trees" if OF_UNITTEST 58 select OF_KOBJ 59 help 60 On some platforms, the device tree can be manipulated at runtime. 61 While this option is selected automatically on such platforms, you 62 can enable it manually to improve device tree unit test coverage. 63 64config OF_ADDRESS 65 def_bool y 66 depends on !SPARC && (HAS_IOMEM || UML) 67 68config OF_IRQ 69 def_bool y 70 depends on !SPARC && IRQ_DOMAIN 71 72config OF_NET 73 depends on NETDEVICES 74 def_bool y 75 76config OF_MDIO 77 def_tristate PHYLIB 78 depends on PHYLIB 79 select FIXED_PHY 80 help 81 OpenFirmware MDIO bus (Ethernet PHY) accessors 82 83config OF_RESERVED_MEM 84 depends on OF_EARLY_FLATTREE 85 bool 86 help 87 Helpers to allow for reservation of memory regions 88 89config OF_RESOLVE 90 bool 91 92config OF_OVERLAY 93 bool "Device Tree overlays" 94 select OF_DYNAMIC 95 select OF_FLATTREE 96 select OF_RESOLVE 97 help 98 Overlays are a method to dynamically modify part of the kernel's 99 device tree with dynamically loaded data. 100 While this option is selected automatically when needed, you can 101 enable it manually to improve device tree unit test coverage. 102 103config OF_NUMA 104 bool 105 106endif # OF 107