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| author | Georgi Djakov <georgi.djakov@linaro.org> | 2017-12-05 18:47:00 +0300 |
|---|---|---|
| committer | Jassi Brar <jaswinder.singh@linaro.org> | 2018-02-04 09:46:34 +0300 |
| commit | 0ae7d327a64b262443b7d3ebee5831e4dde47b89 (patch) | |
| tree | a13d0664a450e16e90bcbd45dc470b3944d968df | |
| parent | c815d769b598196bdbd104a7e049d07ae6fba0d2 (diff) | |
| download | linux-0ae7d327a64b262443b7d3ebee5831e4dde47b89.tar.xz | |
dt-bindings: mailbox: qcom: Document the APCS clock binding
Update the binding documentation for APCS to mention that the APCS
hardware block also expose a clock controller functionality.
The APCS clock controller is a mux and half-integer divider. It has the
main CPU PLL as an input and provides the clock for the application CPU.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| -rw-r--r-- | Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt index fb961c310f44..16964f0c1773 100644 --- a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt +++ b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt @@ -15,12 +15,21 @@ platforms. Usage: required Value type: <prop-encoded-array> Definition: must specify the base address and size of the global block +- clocks: + Usage: required if #clocks-cells property is present + Value type: <phandle> + Definition: phandle to the input PLL, which feeds the APCS mux/divider - #mbox-cells: Usage: required Value type: <u32> Definition: as described in mailbox.txt, must be 1 +- #clock-cells: + Usage: optional + Value type: <u32> + Definition: as described in clock.txt, must be 0 + = EXAMPLE The following example describes the APCS HMSS found in MSM8996 and part of the @@ -44,3 +53,12 @@ GLINK RPM referencing the "rpm_hlos" doorbell therein. 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>; + }; |