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ff4c25f26a
This API is primarily used through DT entries, but two architectures and two drivers call it directly. So instead of selecting the config symbol for random architectures pull it in implicitly for the actual users. Also rename the Kconfig option to describe the feature better. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Paul Burton <paul.burton@mips.com> # MIPS Acked-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
107 lines
2.3 KiB
Plaintext
107 lines
2.3 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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config DTC
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bool
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menuconfig OF
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bool "Device Tree and Open Firmware support"
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help
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This option enables the device tree infrastructure.
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It is automatically selected by platforms that need it or can
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be enabled manually for unittests, overlays or
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compile-coverage.
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if OF
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config OF_UNITTEST
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bool "Device Tree runtime unit tests"
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depends on !SPARC
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select IRQ_DOMAIN
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select OF_EARLY_FLATTREE
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select OF_RESOLVE
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help
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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.
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If unsure, say N here, but this option is safe to enable.
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config OF_ALL_DTBS
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bool "Build all Device Tree Blobs"
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depends on COMPILE_TEST
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select DTC
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help
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This option builds all possible Device Tree Blobs (DTBs) for the
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current architecture.
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If unsure, say N here, but this option is safe to enable.
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config OF_FLATTREE
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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
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bool
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select DMA_DECLARE_COHERENT if HAS_DMA
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select OF_FLATTREE
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config OF_PROMTREE
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bool
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config OF_KOBJ
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def_bool SYSFS
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# Hardly any platforms need this. It is safe to select, but only do so if you
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# need it.
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config OF_DYNAMIC
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bool "Support for dynamic device trees" if OF_UNITTEST
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select OF_KOBJ
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help
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On some platforms, the device tree can be manipulated at runtime.
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While this option is selected automatically on such platforms, you
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can enable it manually to improve device tree unit test coverage.
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config OF_ADDRESS
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def_bool y
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depends on !SPARC && (HAS_IOMEM || UML)
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config OF_IRQ
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def_bool y
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depends on !SPARC && IRQ_DOMAIN
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config OF_NET
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depends on NETDEVICES
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def_bool y
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config OF_MDIO
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def_tristate PHYLIB
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depends on PHYLIB
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select FIXED_PHY
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help
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OpenFirmware MDIO bus (Ethernet PHY) accessors
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config OF_RESERVED_MEM
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bool
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depends on OF_EARLY_FLATTREE
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default y if DMA_DECLARE_COHERENT || DMA_CMA
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config OF_RESOLVE
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bool
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config OF_OVERLAY
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bool "Device Tree overlays"
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select OF_DYNAMIC
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select OF_FLATTREE
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select OF_RESOLVE
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help
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Overlays are a method to dynamically modify part of the kernel's
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device tree with dynamically loaded data.
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While this option is selected automatically when needed, you can
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enable it manually to improve device tree unit test coverage.
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config OF_NUMA
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bool
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endif # OF
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