summaryrefslogtreecommitdiffstats
path: root/drivers/of/Kconfig
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/of/Kconfig')
-rw-r--r--drivers/of/Kconfig103
1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
new file mode 100644
index 000000000..18450437d
--- /dev/null
+++ b/drivers/of/Kconfig
@@ -0,0 +1,103 @@
+# SPDX-License-Identifier: GPL-2.0
+config DTC
+ bool
+
+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.
+
+if OF
+
+config OF_UNITTEST
+ bool "Device Tree runtime unit tests"
+ depends on !SPARC
+ select IRQ_DOMAIN
+ select OF_EARLY_FLATTREE
+ select OF_RESOLVE
+ help
+ This option builds in test cases for the device tree infrastructure
+ that are executed once at boot time, and the results dumped to the
+ console.
+
+ If unsure, say N here, but this option is safe to enable.
+
+config OF_ALL_DTBS
+ bool "Build all Device Tree Blobs"
+ depends on COMPILE_TEST
+ select DTC
+ help
+ This option builds all possible Device Tree Blobs (DTBs) for the
+ current architecture.
+
+ If unsure, say N here, but this option is safe to enable.
+
+config OF_FLATTREE
+ bool
+ select DTC
+ select LIBFDT
+ select CRC32
+
+config OF_EARLY_FLATTREE
+ bool
+ select DMA_DECLARE_COHERENT if HAS_DMA
+ select OF_FLATTREE
+
+config OF_PROMTREE
+ bool
+
+config OF_KOBJ
+ def_bool SYSFS
+
+# Hardly any platforms need this. It is safe to select, but only do so if you
+# need it.
+config OF_DYNAMIC
+ bool "Support for dynamic device trees" if OF_UNITTEST
+ select OF_KOBJ
+ 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.
+
+config OF_ADDRESS
+ def_bool y
+ depends on !SPARC && (HAS_IOMEM || UML)
+
+config OF_IRQ
+ def_bool y
+ depends on !SPARC && IRQ_DOMAIN
+
+config OF_NET
+ depends on NETDEVICES
+ def_bool y
+
+config OF_RESERVED_MEM
+ bool
+ depends on OF_EARLY_FLATTREE
+ default y if DMA_DECLARE_COHERENT || DMA_CMA
+
+config OF_RESOLVE
+ bool
+
+config OF_OVERLAY
+ bool "Device Tree overlays"
+ select OF_DYNAMIC
+ select OF_FLATTREE
+ select OF_RESOLVE
+ 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.
+
+config OF_NUMA
+ bool
+
+config OF_DMA_DEFAULT_COHERENT
+ # arches should select this if DMA is coherent by default for OF devices
+ bool
+
+endif # OF