bindings/arm/arm%2Cembedded-trace-extension.yaml

1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
4 ---
5 $id: http://devicetree.org/schemas/arm/arm,embedded-trace-extension.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11   - Suzuki K Poulose <suzuki.poulose@arm.com>
12   - Mathieu Poirier <mathieu.poirier@linaro.org>
16   allows tracing the CPU execution. It overlaps with the CoreSight ETMv4
18   The trace generated by the ETE could be stored via legacy CoreSight
19   components (e.g, TMC-ETR) or other means (e.g, using a per CPU buffer
21   legacy CoreSight components, a node must be listed per instance, along
22   with any optional connection graph as per the coresight bindings.
26     pattern: "^ete([0-9a-f]+)$"
29       - const: arm,embedded-trace-extension
36   power-domains:
39   out-ports:
41       Output connections from the ETE to legacy CoreSight trace bus.
45         description: Output connection from the ETE to legacy CoreSight Trace bus.
49   - compatible
50   - cpu
56 # An ETE node without legacy CoreSight connections
57   - |
59       compatible = "arm,embedded-trace-extension";
62 # An ETE node with legacy CoreSight connections
63   - |
65       compatible = "arm,embedded-trace-extension";
68       out-ports {        /* legacy coresight connection */
71                 remote-endpoint = <&funnel_in_port0>;