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Documentation: remove devicetree docs

Remove the barebox devicetree documentation. It will
be replaced with sphinx based documentation later.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2014-06-17 10:35:53 +02:00
parent fb619a75fd
commit 7e65163b91
6 changed files with 0 additions and 89 deletions

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barebox uses the same devicetree bindings as the kernel. For
the bindings derived from the kernel look in the kernel sources
for reference.
barebox specific bindings are documented here.

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barebox specific devicetree bindings
====================================
barebox uses some barebox specific devicetree bindings. All of these
are under the /chosen/ hierarchy in the devicetree.
The bindings have the form of a device with regular 'compatible' properties.
drivers matching these devices do not handle physical devices but instead
influence / configure certain behaviours of barebox like the place where to
find the persistent environment.

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barebox environment
===================
This driver provides an environment for barebox from the devicetree.
Required properties:
- compatible: should be "barebox,environment"
- device-path: path to the environment
The device-path is a multistring property. The first string should be a
nodepath to the node containing the physical device of the environment.
The subsequent strings are of the form <type>:<options> to further describe
the path to the environment. Supported values for <type>:
partname:<partname> This describes a partition on a device. <partname> can
be the label for mtd partitions, the number for DOS
partitions (beginning with 0) or the name for GPT
partitions
Example:
environment@0 {
compatible = "barebox,environment";
device-path = &flash, "partname:barebox-environment";
};

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Common leds properties.
- linux,default-trigger barebox,default-trigger: This parameter, if present, is a
string defining the trigger assigned to the LED. Current triggers are:
"heartbeat" - LED flashes at a constant rate
"panic" - LED turns on when barebox panics
"net" - LED indicates network activity

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Freescale i.MX IIM (Ic Identification Module)
Required properties:
- compatible: fsl,imx27-iim
- reg: physical register base and size
Optional properties:
- barebox,provide-mac-address: Provide MAC addresses for ethernet devices. This
can be multiple entries in the form <&phandle bankno fuseofs> to specify a MAC
address to a ethernet device.
Example:
iim: iim@83f98000 {
compatible = "fsl,imx51-iim", "fsl,imx27-iim";
reg = <0x83f98000 0x4000>;
barebox,provide-mac-address = <&fec 1 9>;
};

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Freescale i.MX OCOTP (On-Chip OTP)
Required properties:
- compatible: fsl,imx6q-ocotp
- reg: physical register base and size
Optional properties:
- barebox,provide-mac-address: Provide MAC addresses for ethernet devices. This
can be multiple entries in the form <&phandle regofs> to specify a MAC
address to a ethernet device.
Example:
ocotp1: ocotp@021bc000 {
compatible = "fsl,imx6q-ocotp";
reg = <0x021bc000 0x4000>;
barebox,provide-mac-address = <&fec 0x620>;
};