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736b1c9c95
The two device tree files octeon_3xxx.dts and octeon_68xx.dts are trimmed by code in a subsequent patch to reflect the hardware actually present on the board. To this end several properties that are not part of the declared bindings are added to aid in trimming off unwanted nodes. Since the device tree and the code that trims it are bound into the kernel binary, these 'marker' properties never escape into the wild, and are purely an implementation detail of the kernel early boot process. This is done for backwards compatibility with existing boards (identified by a board type enumeration value by their bootloaders). New boards will always pass a device tree from the bootloader, the built-in trees are ignored in this case. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: devicetree-discuss@lists.ozlabs.org Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: linux-kernel@vger.kernel.org Cc: David Daney <david.daney@cavium.com> Patchwork: https://patchwork.linux-mips.org/patch/3937/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
31 lines
915 B
Plaintext
31 lines
915 B
Plaintext
* Compact Flash
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The Cavium Compact Flash device is connected to the Octeon Boot Bus,
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and is thus a child of the Boot Bus device. It can read and write
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industry standard compact flash devices.
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Properties:
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- compatible: "cavium,ebt3000-compact-flash";
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Compatibility with many Cavium evaluation boards.
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- reg: The base address of the the CF chip select banks. Depending on
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the device configuration, there may be one or two banks.
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- cavium,bus-width: The width of the connection to the CF devices. Valid
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values are 8 and 16.
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- cavium,true-ide: Optional, if present the CF connection is in True IDE mode.
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- cavium,dma-engine-handle: Optional, a phandle for the DMA Engine connected
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to this device.
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Example:
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compact-flash@5,0 {
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compatible = "cavium,ebt3000-compact-flash";
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reg = <5 0 0x10000>, <6 0 0x10000>;
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cavium,bus-width = <16>;
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cavium,true-ide;
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cavium,dma-engine-handle = <&dma0>;
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};
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