This patch series expands my previous SMP timer effort, and adds device tree support to two very common elements: the GIC and the TWD timer.
As this is my first trip into DT land, I'm pretty sure there's a lot to say about the bindings, and I'm specially looking for comments around the following topics: - The device_type attribute: when is it valid to use it? - I used the compatible attribute as a generic way to probe for a whole class of device, and I feel this is not the indended usage. - The TWD binding describes its interrupts inside sub nodes, which means the platform device doesn't contain the IRQ resources, and the driver has to parse the tree itself. As I'm under the impression that a platform driver should only parse the tree to get platform data, I wonder if there is some DT magic to solve this particular problem in an elegant way? - early platform devices and DT: I've taken the brute-force approach here, and would be very glad if someone could come up with a better alternative. This patch series also depends on a few patches by Grant Likely: dt/platform: allow device name to be overridden drivers/amba: create devices from device tree dt: add of_platform_populate() for creating device from the device tree dt: Add default match table for bus ids irq: add irq_domain translation infrastructure The whole branch including the PPI infrastructure, the SMP timer rework, Grant's patches, this patch series and a few others are (or will soon be) in the following repository: git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git local_timer_devices-v3.0-rc4 Marc Zyngier (4): dt: early platform devices support ARM: dt: register local timers as early platform devices ARM: dt: add GIC bindings and driver support ARM: dt: Add TWD bindings and driver support Documentation/devicetree/bindings/arm/gic.txt | 92 ++++++++ Documentation/devicetree/bindings/arm/twd.txt | 54 +++++ arch/arm/common/gic.c | 312 ++++++++++++++++++++----- arch/arm/include/asm/hardware/gic.h | 4 + arch/arm/kernel/time.c | 4 + drivers/clocksource/arm_smp_twd.c | 92 +++++++- drivers/of/platform.c | 26 ++ include/linux/of_platform.h | 1 + 8 files changed, 517 insertions(+), 68 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/gic.txt create mode 100644 Documentation/devicetree/bindings/arm/twd.txt _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss
