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Diffstat (limited to 'Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt')
-rw-r--r-- | Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt deleted file mode 100644 index 783dc81b0f26..000000000000 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt +++ /dev/null @@ -1,87 +0,0 @@ -Qualcomm Always-On Subsystem side channel binding - -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 it's 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. These resources are exposed as a set of -power-domains. - -- compatible: - Usage: required - Value type: <string> - Definition: must be one of: - "qcom,sc7180-aoss-qmp" - "qcom,sc7280-aoss-qmp" - "qcom,sdm845-aoss-qmp" - "qcom,sm8150-aoss-qmp" - "qcom,sm8250-aoss-qmp" - "qcom,sm8350-aoss-qmp" - -- reg: - Usage: required - Value type: <prop-encoded-array> - Definition: the base address and size of the message RAM for this - client's communication with the AOSS - -- interrupts: - Usage: required - Value type: <prop-encoded-array> - Definition: should specify the AOSS message IRQ for this client - -- mboxes: - Usage: required - Value type: <prop-encoded-array> - Definition: reference to the mailbox representing the outgoing doorbell - in APCS for this client, as described in mailbox/mailbox.txt - -- #clock-cells: - Usage: optional - Value type: <u32> - Definition: must be 0 - The single clock represents the QDSS clock. - -- #power-domain-cells: - Usage: optional - Value type: <u32> - Definition: must be 1 - The provided power-domains are: - CDSP state (0), LPASS state (1), modem state (2), SLPI - state (3), SPSS state (4) and Venus state (5). - -= SUBNODES -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 therefor be "cx", "mx" or "ebi". - -- #cooling-cells: - Usage: optional - Value type: <u32> - Definition: must be 2 - -= EXAMPLE - -The following example represents the AOSS side-channel message RAM and the -mechanism exposing the power-domains, as found in SDM845. - - aoss_qmp: qmp@c300000 { - compatible = "qcom,sdm845-aoss-qmp"; - reg = <0x0c300000 0x100000>; - interrupts = <GIC_SPI 389 IRQ_TYPE_EDGE_RISING>; - mboxes = <&apss_shared 0>; - - #power-domain-cells = <1>; - - cx_cdev: cx { - #cooling-cells = <2>; - }; - - mx_cdev: mx { - #cooling-cells = <2>; - }; - }; |