kernel/dtc - dtc - PowerEL Git System

Nikhil Devshatwar 3346e065aa dtc: parser: Add label while overriding nodes This patch changes the dtc grammar to allow following syntax i2cexp: &i2c2 { ... }; Current device tree compiler allows to define multiple labels when defining the device node the first time. Typically device nodes are defined in DTSI files. Now these nodes can be overwritten for updating some of the properties. Typically, device nodes are overridden in DTS files. When working with adapter boards, most of the time adapter board can fit to multiple base boards. But depending on which base board it is connected to, the devices on the adapter board would be children of different devices. e.g. On dra7-evm.dts, i2c2 is exported for expansion connector whereas on dra72-evm.dts, i2c5 is exported for expansion connector. This causes a problem when writing a generic device tree file for the adapter board. Because, you cannot know whether all the devices on adapter board are present on i2c or i2c5. The problem can be solved by adding a common label (e.g. i2cexp) in both of the DTS files when overriding the device nodes for i2c2 or i2c5. This way, generic adapter board file would override the i2cexp. And depending on which base board you use the adapter board, all the devices are automatically added for correct device nodes. Signed-off-by: Nikhil Devshatwar <nikhil.nd@ti.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>		10 years ago
Documentation	Update source code location for dtc in manual.txt	11 years ago
libfdt	libfdt: Add helpers to read #address-cells and #size-cells	11 years ago
scripts	dtc: Add maintainer script for signing and upload to kernel.org	10 years ago
tests	dtc: parser: Add label while overriding nodes	10 years ago
.gitignore	…
GPL	…
Makefile	dtc: Bump version to 1.4.1	10 years ago
Makefile.convert-dtsv0	…
Makefile.dtc	…
Makefile.utils	…
README	…
README.license	…
TODO	…
checks.c	dtc: Use va_end to match corresponding va_start	10 years ago
convert-dtsv0-lexer.l	dtc: Delete the unused start condition INCLUDE	10 years ago
data.c	Properly handle embedded nul delimited string lists	10 years ago
dtc-lexer.l	dtc: Delete the unused start condition INCLUDE	10 years ago
dtc-parser.y	dtc: parser: Add label while overriding nodes	10 years ago
dtc.c	dtc: Update the usage helper message	10 years ago
dtc.h	Work around MSVC limitations	11 years ago
dtdiff	…
fdtdump.c	Improve portability	10 years ago
fdtget.c	…
fdtput.c	fdtput: add delete node and property function	10 years ago
flattree.c	…
fstree.c	Open binary files in binary mode	11 years ago
livetree.c	Fix bug with references to root node	11 years ago
srcpos.c	Open binary files in binary mode	11 years ago
srcpos.h	…
treesource.c	Correct write_propval_bytes() for platforms with signed char by default	11 years ago
util.c	Tweak code to display cell values	11 years ago
util.h	dtc: Use va_end to match corresponding va_start	10 years ago

README

The source tree contains the Device Tree Compiler (dtc) toolchain for
working with device tree source and binary files and also libfdt, a
utility library for reading and manipulating the binary format.

DTC and LIBFDT are maintained by:

David Gibson <david@gibson.dropbear.id.au>
Jon Loeliger <jdl@jdl.com>

Mailing list
------------
The following list is for discussion about dtc and libfdt implementation
mailto:devicetree-compiler@vger.kernel.org

Core device tree bindings are discussed on the devicetree-spec list:
mailto:devicetree-spec@vger.kernel.org

Home Page
---------
http://devicetree.org/Device_Tree_Compiler