On Fri 01 Dec 09:02 PST 2017, Georgi Djakov wrote:
> 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@xxxxxxxxxx>
Nice!
Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Regards,
Bjorn
> ---
> .../bindings/mailbox/qcom,apcs-kpss-global.txt | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> 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>;
> + };
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