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-rw-r--r--Documentation/devicetree/bindings/interconnect/qcom,bcm-voter.yaml28
1 files changed, 24 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/interconnect/qcom,bcm-voter.yaml b/Documentation/devicetree/bindings/interconnect/qcom,bcm-voter.yaml
index 5971fc1df08d..eec987640b37 100644
--- a/Documentation/devicetree/bindings/interconnect/qcom,bcm-voter.yaml
+++ b/Documentation/devicetree/bindings/interconnect/qcom,bcm-voter.yaml
@@ -21,6 +21,23 @@ properties:
enum:
- qcom,bcm-voter
+ qcom,tcs-wait:
+ description: |
+ Optional mask of which TCSs (Triggered Command Sets) wait for completion
+ upon triggering. If not specified, then the AMC and WAKE sets wait for
+ completion. The mask bits are available in the QCOM_ICC_TAG_* defines.
+
+ The AMC TCS is triggered immediately when icc_set_bw() is called. The
+ WAKE/SLEEP TCSs are triggered when the RSC transitions between active and
+ sleep modes.
+
+ In most cases, it's necessary to wait in both the AMC and WAKE sets to
+ ensure resources are available before use. If a specific RSC and its use
+ cases can ensure sufficient delay by other means, then this can be
+ overridden to reduce latencies.
+
+ $ref: /schemas/types.yaml#/definitions/uint32
+
required:
- compatible
@@ -28,18 +45,21 @@ additionalProperties: false
examples:
# Example 1: apps bcm_voter on SDM845 SoC should be defined inside &apps_rsc node
- # as defined in Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt
+ # as defined in Documentation/devicetree/bindings/soc/qcom/qcom,rpmh-rsc.yaml
- |
- apps_bcm_voter: bcm_voter {
+ apps_bcm_voter: bcm-voter {
compatible = "qcom,bcm-voter";
};
# Example 2: disp bcm_voter on SDM845 should be defined inside &disp_rsc node
- # as defined in Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt
+ # as defined in Documentation/devicetree/bindings/soc/qcom/qcom,rpmh-rsc.yaml
- |
- disp_bcm_voter: bcm_voter {
+ #include <dt-bindings/interconnect/qcom,icc.h>
+
+ disp_bcm_voter: bcm-voter {
compatible = "qcom,bcm-voter";
+ qcom,tcs-wait = <QCOM_ICC_TAG_AMC>;
};
...