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| author |   Vince Weaver <vincent.weaver@maine.edu> | 2013-12-31 16:54:16 -0500 |
|---|---|---|
| committer |   Stephen Warren <swarren@wwwdotorg.org> | 2014-02-11 21:41:39 -0700 |
| commit | 14ac652b67fe08b0dca78995a4298aad38345a31 (patch) | |
| tree | 141ac6ef1688e458e3aa60f9c20654874b31b836 /arch/arm/boot/dts/bcm2835.dtsi | |
| parent | Linus 3.14-rc1 (diff) | |
| download | linux-dev-14ac652b67fe08b0dca78995a4298aad38345a31.tar.xz linux-dev-14ac652b67fe08b0dca78995a4298aad38345a31.zip | |
ARM: bcm2835: perf_event support for Raspberry-Pi
The following patch enables performance counter support on Raspberry-Pi.
We have this working on the 2708 based rasp-pi kernels by manually putting
the device registration in the platform files.
This change does things properly in a device tree. The boot messages look
proper, but my rasp-pi hangs somewhere in USB enabling when running a
stock 3.13-rc6 kernel so I have been unable to fully test this change.
I also understand that the rasp-pi 1176 pmu support is missing the
overflow interrupt. I'm not sure if that's true of all 2835
implementations. If not, then this patch will need to be changed a bit.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
[swarren, fixed DT node sort order]
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'arch/arm/boot/dts/bcm2835.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/bcm2835.dtsi | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi index b021c96d3ba1..beb8659813b2 100644 --- a/arch/arm/boot/dts/bcm2835.dtsi +++ b/arch/arm/boot/dts/bcm2835.dtsi @@ -113,6 +113,10 @@ reg = <0x7e980000 0x10000>; interrupts = <1 9>; }; + + arm-pmu { + compatible = "arm,arm1176-pmu"; + }; }; clocks { |