Kernel-4.18.0-80.el8_qcom,apcs-kpss-global

Binding for the Qualcomm APCS global block

This binding describes the APCS “global” block found in various Qualcomm
platforms.

• compatible:
  Usage: required
  Value type:
  Definition: must be one of:

        "qcom,msm8916-apcs-kpss-global",
        "qcom,msm8996-apcs-hmss-global"
        "qcom,msm8998-apcs-hmss-global"
        "qcom,sdm845-apss-shared"
  

• reg:
  Usage: required
  Value type:
  Definition: must specify the base address and size of the global block

• clocks:
  Usage: required if #clocks-cells property is present
  Value type:
  Definition: phandle to the input PLL, which feeds the APCS mux/divider

• #mbox-cells:
  Usage: required
  Value type:
  Definition: as described in mailbox.txt, must be 1

• #clock-cells:
  Usage: optional
  Value type:
  Definition: as described in clock.txt, must be 0

= 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";
};

Below is another example of the APCS binding on MSM8916 platforms:

apcs: mailbox@b011000 {
    compatible = "qcom,msm8916-apcs-kpss-global";
    reg = <0xb011000 0x1000>;
    #mbox-cells = <1>;
    clocks = <&a53pll>;
    #clock-cells = <0>;
};