On 03/19/2018 01:08 PM, Stephen Boyd wrote:
> Quoting Dinh Nguyen (2018-02-26 06:47:33)
>> diff --git a/Documentation/devicetree/bindings/clock/intc_stratix10.txt b/Documentation/devicetree/bindings/clock/intc_stratix10.txt
>> new file mode 100644
>> index 0000000..0652ff1
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/intc_stratix10.txt
>> @@ -0,0 +1,51 @@
>> +Device Tree Clock bindings for Intel's SoCFPGA Stratix10 platform
>> +
>> +This binding uses the common clock binding[1].
>> +
>> +[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
>> +
>> +Required properties:
>> +- compatible : shall be
>> + "intel,stratix10-clkmgr"
>> +
>> +- reg : shall be the control register offset from CLOCK_MANAGER's base for the clock.
>> +
>> +- #clock-cells : from common clock binding, shall be set to 1.
>> +
>> +- clocks : Should contain fixed-clock sources, such as oscillators.
>> +
>> +Example:
>> + clkmgr: clock-controller@ffd10000 {
>> + compatible = "intel,stratix10-clkmgr";
>> + reg = <0xffd10000 0x1000>;
>> + #clock-cells = <1>;
>> +
>> + clocks {
>
> Why do we need a subnode for clocks inside of a clock controller node?
>
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + cb_intosc_hs_div2_clk: cb-intosc-hs-div2-clk {
>> + #clock-cells = <0>;
>> + compatible = "fixed-clock";
>> + clock-frequency = <25000000>;
>
> What is this for? I would think oscillators go into the root of the DT
> because they're on the board, not inside the clock controller.
>
Thanks for the review! I'll move the PLLs into the root of the DT.
Dinh
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