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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/arm,coresight-catu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Arm Coresight Address Translation Unit (CATU)
maintainers:
- Mathieu Poirier <mathieu.poirier@linaro.org>
- Mike Leach <mike.leach@linaro.org>
- Leo Yan <leo.yan@linaro.org>
- Suzuki K Poulose <suzuki.poulose@arm.com>
description: |
CoreSight components are compliant with the ARM CoreSight architecture
specification and can be connected in various topologies to suit a particular
SoCs tracing needs. These trace components can generally be classified as
sinks, links and sources. Trace data produced by one or more sources flows
through the intermediate links connecting the source to the currently selected
sink.
The CoreSight Address Translation Unit (CATU) translates addresses between an
AXI master and system memory. The CATU is normally used along with the TMC to
implement scattering of virtual trace buffers in physical memory. The CATU
translates contiguous Virtual Addresses (VAs) from an AXI master into
non-contiguous Physical Addresses (PAs) that are intended for system memory.
# Need a custom select here or 'arm,primecell' will match on lots of nodes
select:
properties:
compatible:
contains:
const: arm,coresight-catu
required:
- compatible
allOf:
- $ref: /schemas/arm/primecell.yaml#
properties:
compatible:
items:
- const: arm,coresight-catu
- const: arm,primecell
reg:
maxItems: 1
clocks:
minItems: 1
maxItems: 2
clock-names:
minItems: 1
items:
- const: apb_pclk
- const: atclk
interrupts:
maxItems: 1
description: Address translation error interrupt
power-domains:
maxItems: 1
in-ports:
$ref: /schemas/graph.yaml#/properties/ports
additionalProperties: false
properties:
port:
description: AXI Slave connected to another Coresight component
$ref: /schemas/graph.yaml#/properties/port
required:
- compatible
- reg
- clocks
- clock-names
- in-ports
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
catu@207e0000 {
compatible = "arm,coresight-catu", "arm,primecell";
reg = <0x207e0000 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
in-ports {
port {
catu_in_port: endpoint {
remote-endpoint = <&etr_out_port>;
};
};
};
};
...
|
