[PATCH V3 20/27] dt-bindings: timer: C-SKY Multi-processor timer
From: Guo Ren <hidden>
Date: 2018-09-12 13:26:02
Also in:
linux-arch, lkml
Subsystem:
c-sky architecture, clocksource, clockevent drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Guo Ren, Daniel Lezcano, Thomas Gleixner, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Signed-off-by: Guo Ren <redacted> --- .../devicetree/bindings/timer/csky,mptimer.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/csky,mptimer.txt
diff --git a/Documentation/devicetree/bindings/timer/csky,mptimer.txt b/Documentation/devicetree/bindings/timer/csky,mptimer.txt
new file mode 100644
index 0000000..0d7369f
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/csky,mptimer.txt@@ -0,0 +1,46 @@ +============================ +C-SKY Multi-processors Timer +============================ + +C-SKY multi-processors timer is designed for C-SKY SMP system and the +regs is accessed by cpu co-processor 4 registers with mtcr/mfcr. + + - PTIM_CTLR "cr<0, 14>" Control reg to start reset timer. + - PTIM_TSR "cr<1, 14>" Interrupt cleanup status reg. + - PTIM_CCVR "cr<3, 14>" Current counter value reg. + - PTIM_LVR "cr<6, 14>" Window value reg to triger next event. + +============================== +timer node bindings definition +============================== + + Description: Describes SMP timer + + PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: must be "csky,mptimer" + - clocks + Usage: required + Value type: <node> + Definition: must be input clk node + - interrupt + Usage: required + Value type: <u32> + Definition: must be timer irq num defined by soc + - interrupt-parent: + Usage: required + Value type: <node> + Definition: must be interrupt controller node + +Examples: +--------- + + timer: timer { + compatible = "csky,mptimer"; + clocks = <&dummy_apb_clk>; + interrupts = <16>; + interrupt-parent = <&intc>; + };
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2.7.4