On Wed, Jan 10, 2018 at 11:48:34PM +0100, Paul Cercueil wrote:
> Add documentation about how to properly use the Ingenic TCU
> (Timer/Counter Unit) timers driver from devicetree.
>
> Signed-off-by: Paul Cercueil <[email protected]>
> ---
> .../devicetree/bindings/timer/ingenic,tcu.txt | 35
> ++++++++++++++++++++++
> 1 file changed, 35 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/timer/ingenic,tcu.txt
>
> v3: New patch in this series
Similar comments in this one.
>
> diff --git a/Documentation/devicetree/bindings/timer/ingenic,tcu.txt
> b/Documentation/devicetree/bindings/timer/ingenic,tcu.txt
> new file mode 100644
> index 000000000000..dd76877efb8b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/ingenic,tcu.txt
> @@ -0,0 +1,35 @@
> +Ingenic JZ47xx SoCs Timer/Counter Unit driver
> +---------------------------------------------
> +
> +Required properties:
> +
> +- compatible : should be "ingenic,<socname>-tcu". Valid strings are:
> + * ingenic,jz4740-tcu
> + * ingenic,jz4770-tcu
> + * ingenic,jz4780-tcu
> +- interrupt-parent : phandle of the TCU interrupt controller.
> +- interrupts : Specifies the interrupts the controller is connected to.
> +- clocks : List of phandle & clock specifiers for the TCU clocks.
> +- clock-names : List of name strings for the TCU clocks.
Need to be explicit with how many clocks and their order.
> +
> +Example:
> +
> +/ {
> + mfd@10002000 {
> + compatible = "ingenic,tcu", "simple-mfd", "syscon";
> + reg = <0x10002000 0x1000>;
> +
> + tcu_timer: timer {
> + compatible = "ingenic,jz4740-tcu";
> + reg = <0x10002010 0xFF0>;
> +
> + clocks = <&tcu 0>, <&tcu 1>, <&tcu 2>, <&tcu 3>,
> + <&tcu 4>, <&tcu 5>, <&tcu 6>, <&tcu 7>;
> + clock-names = "timer0", "timer1", "timer2", "timer3",
> + "timer4", "timer5", "timer6",
> "timer7";
> +
> + interrupt-parent = <&tcu>;
> + interrupts = <0 1 2 3 4 5 6 7>;
> + };
> + };
> +};
> --
> 2.11.0
>
