[PATCH v3 2/9] Documentation: dt-bindings: Document STM32 pinctrl driver DT bindings
robh at kernel.org
Tue Dec 8 19:41:37 PST 2015
On Tue, Dec 08, 2015 at 01:45:04PM +0100, Maxime Coquelin wrote:
> Signed-off-by: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
> .../bindings/pinctrl/st,stm32-pinctrl.txt | 126 +++++++++++++++++++++
> 1 file changed, 126 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
> diff --git a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
> new file mode 100644
> index 0000000..7b4800c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt
> @@ -0,0 +1,126 @@
> +* STM32 GPIO and Pin Mux/Config controller
> +STMicroelectronics's STM32 MCUs intregrate a GPIO and Pin mux/config hardware
> +controller. It controls the input/output settings on the available pins and
> +also provides ability to multiplex and configure the output of various on-chip
> +controllers onto these pads.
> +Pin controller node:
> +Required properies:
> + - compatible: value should be one of the following:
> + (a) "st,stm32f429-pinctrl"
> + - #address-cells: The value of this property must be 1
> + - #size-cells : The value of this property must be 1
> + - ranges : defines mapping between pin controller node (parent) to
> + gpio-bank node (children).
> + - pins-are-numbered: Specify the subnodes are using numbered pinmux to
> + specify pins.
> +GPIO controller/bank node:
> +Required properties:
> + - gpio-controller : Indicates this device is a GPIO controller
> + - #gpio-cells : Should be two.
> + The first cell is the pin number
> + The second one is the polarity:
> + - 0 for active high
> + - 1 for active low
> + - reg : The gpio address range, relative to the pinctrl range
> + - clocks : clock that drives this bank
> + - st,bank-name : Should be a name string for this bank as specified in
> + the datasheet
How do you intend to use this? We should come up with something generic
or drop it.
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