Messages in this thread Patch in this message | | | From | Mao Han <> | Subject | [PATCH 4/5] dt-bindings: csky: Add csky PMU bindings | Date | Wed, 22 May 2019 17:25:31 +0800 |
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This patch adds the documentation to describe that how to add pmu node in dts.
Signed-off-by: Mao Han <han_mao@c-sky.com> CC: Rob Herring <robh+dt@kernel.org> CC: Guo Ren <guoren@kernel.org> CC: linux-csky@vger.kernel.org --- Documentation/devicetree/bindings/csky/pmu.txt | 38 ++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/csky/pmu.txt
diff --git a/Documentation/devicetree/bindings/csky/pmu.txt b/Documentation/devicetree/bindings/csky/pmu.txt new file mode 100644 index 0000000..6d3cba3 --- /dev/null +++ b/Documentation/devicetree/bindings/csky/pmu.txt @@ -0,0 +1,38 @@ +============================ +C-SKY Performance Monitor Units +============================ + +C-SKY 8xx series cores often have a PMU for counting cpu and cache events. +The C-SKY PMU representation in the device tree should be done as under: + +============================== +PMU node bindings definition +============================== + + Description: Describes PMU + + PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: must be "csky,csky-pmu" + - interrupts + Usage: required + Value type: <u32> + Definition: must be pmu irq num defined by soc + - reg-io-width + Usage: optional + Value type: <u32> + Definition: the width of pmu counter + +Examples: +--------- + + pmu { + compatible = "csky,csky-pmu"; + interrupts = <0x17>; + interrupt-parent = <&intc>; + reg-io-width = <0x30>; + }; + -- 2.7.4
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