Introduce a binding for the Qualcomm APCS global block, exposing a mailbox for invoking interrupts on remote processors in the system.
Acked-by: Rob Herring <[email protected]> Signed-off-by: Bjorn Andersson <[email protected]> --- Changes since v6: - None .../bindings/mailbox/qcom,apcs-kpss-global.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt diff --git a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt new file mode 100644 index 000000000000..fb961c310f44 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt @@ -0,0 +1,46 @@ +Binding for the Qualcomm APCS global block +========================================== + +This binding describes the APCS "global" block found in various Qualcomm +platforms. + +- compatible: + Usage: required + Value type: <string> + Definition: must be one of: + "qcom,msm8916-apcs-kpss-global", + "qcom,msm8996-apcs-hmss-global" + +- reg: + Usage: required + Value type: <prop-encoded-array> + Definition: must specify the base address and size of the global block + +- #mbox-cells: + Usage: required + Value type: <u32> + Definition: as described in mailbox.txt, must be 1 + + += EXAMPLE +The following example describes the APCS HMSS found in MSM8996 and part of the +GLINK RPM referencing the "rpm_hlos" doorbell therein. + + apcs_glb: mailbox@9820000 { + compatible = "qcom,msm8996-apcs-hmss-global"; + reg = <0x9820000 0x1000>; + + #mbox-cells = <1>; + }; + + rpm-glink { + compatible = "qcom,glink-rpm"; + + interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>; + + qcom,rpm-msg-ram = <&rpm_msg_ram>; + + mboxes = <&apcs_glb 0>; + mbox-names = "rpm_hlos"; + }; + -- 2.12.0
