summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml')
-rw-r--r--Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml111
1 files changed, 111 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
new file mode 100644
index 0000000000..d1c7c2be86
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.yaml
@@ -0,0 +1,111 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/qcom/qcom,aoss-qmp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Always-On Subsystem side channel
+
+maintainers:
+ - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description:
+ This binding describes the hardware component responsible for side channel
+ requests to the always-on subsystem (AOSS), used for certain power management
+ requests that is not handled by the standard RPMh interface. Each client in the
+ SoC has its own block of message RAM and IRQ for communication with the AOSS.
+ The protocol used to communicate in the message RAM is known as Qualcomm
+ Messaging Protocol (QMP)
+
+ The AOSS side channel exposes control over a set of resources, used to control
+ a set of debug related clocks and to affect the low power state of resources
+ related to the secondary subsystems.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - qcom,qdu1000-aoss-qmp
+ - qcom,sa8775p-aoss-qmp
+ - qcom,sc7180-aoss-qmp
+ - qcom,sc7280-aoss-qmp
+ - qcom,sc8180x-aoss-qmp
+ - qcom,sc8280xp-aoss-qmp
+ - qcom,sdm845-aoss-qmp
+ - qcom,sm6350-aoss-qmp
+ - qcom,sm8150-aoss-qmp
+ - qcom,sm8250-aoss-qmp
+ - qcom,sm8350-aoss-qmp
+ - qcom,sm8450-aoss-qmp
+ - qcom,sm8550-aoss-qmp
+ - const: qcom,aoss-qmp
+
+ reg:
+ maxItems: 1
+ description:
+ The base address and size of the message RAM for this client's
+ communication with the AOSS
+
+ interrupts:
+ maxItems: 1
+ description:
+ Should specify the AOSS message IRQ for this client
+
+ mboxes:
+ maxItems: 1
+ description:
+ Reference to the mailbox representing the outgoing doorbell in APCS for
+ this client, as described in mailbox/mailbox.txt
+
+ "#clock-cells":
+ const: 0
+ description:
+ The single clock represents the QDSS clock.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - mboxes
+ - "#clock-cells"
+
+additionalProperties: false
+
+patternProperties:
+ "^(cx|mx|ebi)$":
+ type: object
+ description:
+ The AOSS side channel also provides the controls for three cooling devices,
+ these are expressed as subnodes of the QMP node. The name of the node is
+ used to identify the resource and must therefore be "cx", "mx" or "ebi".
+
+ properties:
+ "#cooling-cells":
+ const: 2
+
+ required:
+ - "#cooling-cells"
+
+ additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ aoss_qmp: qmp@c300000 {
+ compatible = "qcom,sdm845-aoss-qmp", "qcom,aoss-qmp";
+ reg = <0x0c300000 0x100000>;
+ interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>;
+ mboxes = <&apss_shared 0>;
+
+ #clock-cells = <0>;
+
+ cx_cdev: cx {
+ #cooling-cells = <2>;
+ };
+
+ mx_cdev: mx {
+ #cooling-cells = <2>;
+ };
+ };
+...