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    SubjectRe: [PATCH 3/3] Documentation: add Actions S900 clock bindings
    On Wed, Nov 01, 2017 at 07:04:48PM -0500, Rob Herring wrote:
    > On Wed, Nov 01, 2017 at 01:24:23AM +0530, Manivannan Sadhasivam wrote:
    > > This patch adds clock bindings for Actions Semi S900 SoC.
    >
    > "dt-bindings: clock: " for the subject.
    >
    > This patch should come before the dts and driver changes.
    >
    Ack. Will incorporate in next revision.

    Thanks,
    Mani
    > >
    > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
    > > ---
    > > .../bindings/clock/actions,s900-clock.txt | 47 ++++++++++++++++++++++
    > > 1 file changed, 47 insertions(+)
    > > create mode 100644 Documentation/devicetree/bindings/clock/actions,s900-clock.txt
    > >
    > > diff --git a/Documentation/devicetree/bindings/clock/actions,s900-clock.txt b/Documentation/devicetree/bindings/clock/actions,s900-clock.txt
    > > new file mode 100644
    > > index 0000000..951d6ad
    > > --- /dev/null
    > > +++ b/Documentation/devicetree/bindings/clock/actions,s900-clock.txt
    > > @@ -0,0 +1,47 @@
    > > +* Actions s900 Clock Controller
    > > +
    > > +The Actions s900 clock controller generates and supplies clock to various
    > > +controllers within the SoC. The clock binding described here is applicable to
    > > +s900 SoC.
    > > +
    > > +Required Properties:
    > > +
    > > +- compatible: should be "actions,s900-clock"
    > > +- reg: physical base address of the controller and length of memory mapped
    > > + region.
    > > +- #clock-cells: should be 1.
    > > +
    > > +Each clock is assigned an identifier and client nodes can use this identifier
    > > +to specify the clock which they consume.
    > > +
    > > +All available clocks are defined as preprocessor macros in
    > > +dt-bindings/clock/actions,s900-clock.h header and can be used in device
    > > +tree sources.
    > > +
    > > +External clocks:
    > > +
    > > +The hosc clock used as input for the plls is generated outside the SoC. It is
    > > +expected that it is defined using standard clock bindings as "hosc".
    > > +
    > > +Actions s900 Clock Controller also require two more clocks:
    > > + - "losc" - internal low frequency oscillator
    > > + - "diff_24M" - internal differential 24MHz clock
    > > +
    > > +Example: Clock controller node:
    > > +
    > > + clock: clock-controller@e0160000 {
    > > + compatible = "actions,s900-clock";
    > > + reg = <0 0xe0160000 0 0x1000>;
    > > + #clock-cells = <1>;
    > > + };
    > > +
    > > +Example: UART controller node that consumes clock generated by the clock
    > > +controller:
    > > +
    > > + serial5: uart@e012a000 {
    >
    > serial@...
    >
    > > + compatible = "actions,s900-uart", "actions,owl-uart";
    > > + reg = <0x0 0xe012a000 0x0 0x2000>;
    > > + interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
    > > + clocks = <&clock CLK_UART5>;
    > > + clock-names = "uart";
    > > + };
    > > --
    > > 2.7.4
    > >

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