Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4d581034 authored by Mao Han's avatar Mao Han Committed by Guo Ren
Browse files

dt-bindings: csky: Add csky PMU bindings 



This patch adds the documentation to describe that how to add pmu node in
dts.

Signed-off-by: default avatarMao Han <han_mao@c-sky.com>
Signed-off-by: default avatarGuo Ren <guoren@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
parent 69d812f5

Documentation/devicetree/bindings/csky/pmu.txt

0 → 100644
+38 −0
Original line number Diff line number Diff line 
===============================

C-SKY Performance Monitor Units

===============================



C-SKY Performance Monitor is designed for ck807/ck810/ck860 SMP soc and

it could count cpu's events for helping analysis performance issues.



============================

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 IRQ_TYPE_XXX>

		Definition: must be pmu irq num defined by soc

	- count-width

		Usage: optional

		Value type: <u32>

		Definition: the width of pmu counter



Examples:

---------

#include <dt-bindings/interrupt-controller/irq.h>



	pmu: performace-monitor {

		compatible = "csky,csky-pmu";

		interrupts = <23 IRQ_TYPE_EDGE_RISING>;

		interrupt-parent = <&intc>;

		count-width = <48>;

        };