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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/perf/amlogic,g12-ddr-pmu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Amlogic G12 DDR performance monitor
maintainers:
- Jiucheng Xu <jiucheng.xu@amlogic.com>
description: |
Amlogic G12 series SoC integrate DDR bandwidth monitor.
A timer is inside and can generate interrupt when timeout.
The bandwidth is counted in the timer ISR. Different platform
has different subset of event format attribute.
properties:
compatible:
enum:
- amlogic,g12a-ddr-pmu
- amlogic,g12b-ddr-pmu
- amlogic,sm1-ddr-pmu
reg:
items:
- description: DMC bandwidth register space.
- description: DMC PLL register space.
interrupts:
items:
- description: The IRQ of the inside timer timeout.
required:
- compatible
- reg
- interrupts
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
pmu {
#address-cells = <2>;
#size-cells = <2>;
pmu@ff638000 {
compatible = "amlogic,g12a-ddr-pmu";
reg = <0x0 0xff638000 0x0 0x100>,
<0x0 0xff638c00 0x0 0x100>;
interrupts = <GIC_SPI 52 IRQ_TYPE_EDGE_RISING>;
};
};
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