25a31579ea
Translating an address from a PCI node of the device-tree into a CPU physical address doesn't require the core PCI support. Those translations are just related to the device tree itself. The use case to translate an address from a PCI node without actually using the PCI core support is when one needs to access the PCI controller without accessing any PCI devices. Marvell SoCs, such as Kirkwood, Dove or Armada XP for instance, come with an IP of a PCI controller. In the registers of this controller are stored the ID and the revision of a SoC. With this patch it will be possible to read the SoC ID of a board without any PCI device and then without the PCI core support. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
83 lines
1.5 KiB
Plaintext
83 lines
1.5 KiB
Plaintext
config DTC
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bool
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config OF
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bool
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menu "Device Tree and Open Firmware support"
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depends on OF
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config PROC_DEVICETREE
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bool "Support for device tree in /proc"
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depends on PROC_FS && !SPARC
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help
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This option adds a device-tree directory under /proc which contains
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an image of the device tree that the kernel copies from Open
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Firmware or other boot firmware. If unsure, say Y here.
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config OF_SELFTEST
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bool "Device Tree Runtime self tests"
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depends on OF_IRQ
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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_FLATTREE
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bool
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select DTC
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config OF_EARLY_FLATTREE
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bool
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select OF_FLATTREE
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config OF_PROMTREE
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bool
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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
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config OF_ADDRESS
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def_bool y
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depends on !SPARC
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select OF_ADDRESS_PCI if PCI
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config OF_ADDRESS_PCI
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bool
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config OF_IRQ
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def_bool y
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depends on !SPARC
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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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help
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OpenFirmware MDIO bus (Ethernet PHY) accessors
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config OF_PCI
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def_tristate PCI
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depends on PCI
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help
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OpenFirmware PCI bus accessors
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config OF_PCI_IRQ
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def_tristate PCI
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depends on OF_PCI && OF_IRQ
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help
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OpenFirmware PCI IRQ routing helpers
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config OF_MTD
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depends on MTD
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def_bool y
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endmenu # OF
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