diff options
| author | Fabrice Gasnier <fabrice.gasnier@st.com> | 2019-04-02 09:30:45 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-25 22:33:41 +0300 |
| commit | 7657b2c123deec38ce3091cbda976b2bfb8ff45a (patch) | |
| tree | fac04e491521cfd5e642861dc44fe4b8d24696ed /Documentation/devicetree/bindings/counter | |
| parent | 597f55e3f36cb512ad82e22f67b9e0962ac1059f (diff) | |
| download | linux-7657b2c123deec38ce3091cbda976b2bfb8ff45a.tar.xz | |
dt-bindings: counter: Adjust dt-bindings for STM32 lptimer move
The STM32 LP Timer counter driver now resides under the Counter
subsystem. This patch adjusts dt-bindings to account for the STM32
lptimer driver move.
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/devicetree/bindings/counter')
| -rw-r--r-- | Documentation/devicetree/bindings/counter/stm32-lptimer-cnt.txt | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/counter/stm32-lptimer-cnt.txt b/Documentation/devicetree/bindings/counter/stm32-lptimer-cnt.txt new file mode 100644 index 000000000000..e90bc47f752a --- /dev/null +++ b/Documentation/devicetree/bindings/counter/stm32-lptimer-cnt.txt @@ -0,0 +1,29 @@ +STMicroelectronics STM32 Low-Power Timer quadrature encoder and counter + +STM32 Low-Power Timer provides several counter modes. It can be used as: +- quadrature encoder to detect angular position and direction of rotary + elements, from IN1 and IN2 input signals. +- simple counter from IN1 input signal. + +Must be a sub-node of an STM32 Low-Power Timer device tree node. +See ../mfd/stm32-lptimer.txt for details about the parent node. + +Required properties: +- compatible: Must be "st,stm32-lptimer-counter". +- pinctrl-names: Set to "default". An additional "sleep" state can be + defined to set pins in sleep state. +- pinctrl-n: List of phandles pointing to pin configuration nodes, + to set IN1/IN2 pins in mode of operation for Low-Power + Timer input on external pin. + +Example: + timer@40002400 { + compatible = "st,stm32-lptimer"; + ... + counter { + compatible = "st,stm32-lptimer-counter"; + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&lptim1_in_pins>; + pinctrl-1 = <&lptim1_sleep_in_pins>; + }; + }; |