On Thu, May 5, 2011 at 11:02 AM, David Daney <ddaney@xxxxxxxxxxxxxxxxxx> wrote: > After several weeks of fire fighting, I am back to my Octeon device > tree patches. > > New in v3: > > More updates to device tree bindings, and perhaps more importantly > descriptions/definitions of the bindings > > libfdt building moved to devices/of/libfdt. > > Cleanup and style improvements as suggested by Grant Likley. > > Omitted all the driver changes, as they are unchanged from the last > set, and at this stage the patches are just an RFC. > > New in v2: > > Changed many device tree bindings. They should be closer to the > standard naming scheme now. > > Editing of the template device tree is done in the flattened form > using libfdt. > > Standard platform driver functions used in preference to the > of_platform variety. > > v1: > > Background: The Octeon family of SOCs has a variety of on-chip > controllers for Ethernet, MDIO, I2C, and several other I/O devices. > These chips are used on boards with a great variety of different > configurations. To date, the configuration and bus topology > information has been hard coded in the drivers and support code. > > To facilitate supporting new chips and boards, we would like to make > use use the Device Tree to encode the configuration information. > > I would like to get some feedback on the current code I am working > with. The migration approach is as follows: > > o Several device tree templates are statically linked into the kernel > image. Based on SOC type and board type one of these is selected in > early boot. Legacy configuration probing code is used to prune and > patch the device tree template. > > o New SOCs and boards will directly use a device tree passed by the > bootloader (This patch set doesn't actually implement this, but it > is trivial to add). > > > > 1/6 - Infrastructure to allow scripts/dtc/libfdt to be used in the > kernel. > > 2/6 - OF patch to simplify of_find_node_by_path(). > > 3/6 - Add the statically linked Device Tree templates and bindings > descriptions. > > 4/6 - Remove unused arch/mips/prom.c code that conflicts with > following patches. > > 5/6 - irq_create_of_mapping() function. > > 6/6 - Fix up Device Tree template for current environment. > > > David Daney (6): > of: Allow scripts/dtc/libfdt to be used from kernel code > of: Make of_find_node_by_path() traverse /aliases for relative paths. > MIPS: Octeon: Add device tree source files. > MIPS: Prune some target specific code out of prom.c > MIPS: Octeon: Add irq_create_of_mapping() and GPIO interrupts. > MIPS: Octeon: Initialize and fixup device tree. > > .../devicetree/bindings/mips/cavium/bootbus.txt | 37 ++ > .../devicetree/bindings/mips/cavium/ciu.txt | 26 ++ > .../devicetree/bindings/mips/cavium/gpio.txt | 48 +++ > .../devicetree/bindings/mips/cavium/mdio.txt | 27 ++ > .../devicetree/bindings/mips/cavium/mix.txt | 40 ++ > .../devicetree/bindings/mips/cavium/pip.txt | 98 +++++ > .../devicetree/bindings/mips/cavium/twsi.txt | 34 ++ > .../devicetree/bindings/mips/cavium/uart.txt | 19 + > .../devicetree/bindings/mips/cavium/uctl.txt | 47 +++ > arch/mips/Kconfig | 1 + > arch/mips/cavium-octeon/.gitignore | 2 + > arch/mips/cavium-octeon/Makefile | 15 + > arch/mips/cavium-octeon/octeon-irq.c | 183 ++++++++- > arch/mips/cavium-octeon/octeon-platform.c | 295 +++++++++++++ > arch/mips/cavium-octeon/octeon_3xxx.dts | 431 ++++++++++++++++++++ > arch/mips/cavium-octeon/setup.c | 17 + > arch/mips/kernel/prom.c | 49 --- > drivers/of/Kconfig | 3 + > drivers/of/Makefile | 2 + > drivers/of/base.c | 41 ++- > drivers/of/libfdt/Makefile | 8 + Out of curiosity, how big are the compiled libfdt object files? > include/linux/libfdt.h | 8 + > include/linux/libfdt_env.h | 13 + > 23 files changed, 1393 insertions(+), 51 deletions(-) > create mode 100644 Documentation/devicetree/bindings/mips/cavium/bootbus.txt > create mode 100644 Documentation/devicetree/bindings/mips/cavium/ciu.txt > create mode 100644 Documentation/devicetree/bindings/mips/cavium/gpio.txt > create mode 100644 Documentation/devicetree/bindings/mips/cavium/mdio.txt > create mode 100644 Documentation/devicetree/bindings/mips/cavium/mix.txt > create mode 100644 Documentation/devicetree/bindings/mips/cavium/pip.txt > create mode 100644 Documentation/devicetree/bindings/mips/cavium/twsi.txt > create mode 100644 Documentation/devicetree/bindings/mips/cavium/uart.txt > create mode 100644 Documentation/devicetree/bindings/mips/cavium/uctl.txt > create mode 100644 arch/mips/cavium-octeon/.gitignore > create mode 100644 arch/mips/cavium-octeon/octeon_3xxx.dts > create mode 100644 drivers/of/libfdt/Makefile > create mode 100644 include/linux/libfdt.h > create mode 100644 include/linux/libfdt_env.h > > -- > 1.7.2.3 > > -- Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd.
