1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/interconnect/qcom,bcm-voter.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Qualcomm BCM-Voter Interconnect
10 - Georgi Djakov <georgi.djakov@linaro.org>
13 The Bus Clock Manager (BCM) is a dedicated hardware accelerator that manages
14 shared system resources by aggregating requests from multiple Resource State
15 Coordinators (RSC). Interconnect providers are able to vote for aggregated
16 thresholds values from consumers by communicating through their respective
26 Optional mask of which TCSs (Triggered Command Sets) wait for completion
27 upon triggering. If not specified, then the AMC and WAKE sets wait for
28 completion. The mask bits are available in the QCOM_ICC_TAG_* defines.
30 The AMC TCS is triggered immediately when icc_set_bw() is called. The
31 WAKE/SLEEP TCSs are triggered when the RSC transitions between active and
34 In most cases, it's necessary to wait in both the AMC and WAKE sets to
35 ensure resources are available before use. If a specific RSC and its use
36 cases can ensure sufficient delay by other means, then this can be
37 overridden to reduce latencies.
39 $ref: /schemas/types.yaml#/definitions/uint32
44 additionalProperties: false
47 # Example 1: apps bcm_voter on SDM845 SoC should be defined inside &apps_rsc node
48 # as defined in Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt
51 apps_bcm_voter: bcm_voter {
52 compatible = "qcom,bcm-voter";
55 # Example 2: disp bcm_voter on SDM845 should be defined inside &disp_rsc node
56 # as defined in Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt
59 #include <dt-bindings/interconnect/qcom,icc.h>
61 disp_bcm_voter: bcm_voter {
62 compatible = "qcom,bcm-voter";
63 qcom,tcs-wait = <QCOM_ICC_TAG_AMC>;