On Tue, 06 Dec 2016, Benjamin Gaignard wrote:
> Add bindings information for STM32 General Purpose Timer
>
> version 2:
> - rename stm32-mfd-timer to stm32-gptimer
> - only keep one compatible string
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxx>
> ---
> .../bindings/mfd/stm32-general-purpose-timer.txt | 39 ++++++++++++++++++++++
> 1 file changed, 39 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/stm32-general-purpose-timer.txt
>
> diff --git a/Documentation/devicetree/bindings/mfd/stm32-general-purpose-timer.txt b/Documentation/devicetree/bindings/mfd/stm32-general-purpose-timer.txt
> new file mode 100644
> index 0000000..e92c8be
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/stm32-general-purpose-timer.txt
> @@ -0,0 +1,39 @@
> +STM32 General Purpose Timer driver bindings
> +
> +Required parameters:
> +- compatible: must be "st,stm32-gptimer"
> +
> +- reg: Physical base address and length of the controller's
> + registers.
> +- clock-names: Set to "clk_int".
> +- clocks: Phandle to the clock used by the timer module.
> + For Clk properties, please refer to ../clock/clock-bindings.txt
> +
> +Optional parameters:
> +- resets: Phandle to the parent reset controller.
> + See ../reset/st,stm32-rcc.txt
> +
> +Optional subnodes:
> +- pwm: See ../pwm/pwm-stm32.txt
> +- timer: See ../iio/timer/stm32-timer-trigger.txt
> +
> +Example:
> + gptimer@40010000 {
I'm not going to push too hard, but I still thing "advanced-control"
would suit better, since this is not *just* a timer. In fact, the
parent device (the MFD) doesn't have any timer functionality. That's
what "timer@0" does.
The IP is called "Advanced Control" in the datasheet, no?
> + #address-cells = <1>;
> + #size-cells = <0>;
> + compatible = "st,stm32-gptimer";
> + reg = <0x40010000 0x400>;
> + clocks = <&rcc 0 160>;
> + clock-names = "clk_int";
> +
> + pwm@0 {
> + compatible = "st,stm32-pwm";
> + pinctrl-0 = <&pwm1_pins>;
> + pinctrl-names = "default";
> + };
> +
> + timer@0 {
> + compatible = "st,stm32-timer-trigger";
> + reg = <0>;
> + };
> + };
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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