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1Binding for the Qualcomm APCS global block
2==========================================
3
4This binding describes the APCS "global" block found in various Qualcomm
5platforms.
6
7- compatible:
8 Usage: required
9 Value type: <string>
10 Definition: must be one of:
11 "qcom,msm8916-apcs-kpss-global",
12 "qcom,msm8996-apcs-hmss-global"
13 "qcom,msm8998-apcs-hmss-global"
14 "qcom,qcs404-apcs-apps-global"
15 "qcom,sdm845-apss-shared"
16
17- reg:
18 Usage: required
19 Value type: <prop-encoded-array>
20 Definition: must specify the base address and size of the global block
21- clocks:
22 Usage: required if #clocks-cells property is present
23 Value type: <phandle>
24 Definition: phandle to the input PLL, which feeds the APCS mux/divider
25
26- #mbox-cells:
27 Usage: required
28 Value type: <u32>
29 Definition: as described in mailbox.txt, must be 1
30
31- #clock-cells:
32 Usage: optional
33 Value type: <u32>
34 Definition: as described in clock.txt, must be 0
35
36
37= EXAMPLE
38The following example describes the APCS HMSS found in MSM8996 and part of the
39GLINK RPM referencing the "rpm_hlos" doorbell therein.
40
41 apcs_glb: mailbox@9820000 {
42 compatible = "qcom,msm8996-apcs-hmss-global";
43 reg = <0x9820000 0x1000>;
44
45 #mbox-cells = <1>;
46 };
47
48 rpm-glink {
49 compatible = "qcom,glink-rpm";
50
51 interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
52
53 qcom,rpm-msg-ram = <&rpm_msg_ram>;
54
55 mboxes = <&apcs_glb 0>;
56 mbox-names = "rpm_hlos";
57 };
58
59Below is another example of the APCS binding on MSM8916 platforms:
60
61 apcs: mailbox@b011000 {
62 compatible = "qcom,msm8916-apcs-kpss-global";
63 reg = <0xb011000 0x1000>;
64 #mbox-cells = <1>;
65 clocks = <&a53pll>;
66 #clock-cells = <0>;
67 };