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Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl/pinctrl-stmfx.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/pinctrl/pinctrl-stmfx.txt | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-stmfx.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-stmfx.txt deleted file mode 100644 index c1b4c1819b84..000000000000 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-stmfx.txt +++ /dev/null @@ -1,116 +0,0 @@ -STMicroelectronics Multi-Function eXpander (STMFX) GPIO expander bindings - -ST Multi-Function eXpander (STMFX) offers up to 24 GPIOs expansion. -Please refer to ../mfd/stmfx.txt for STMFX Core bindings. - -Required properties: -- compatible: should be "st,stmfx-0300-pinctrl". -- #gpio-cells: should be <2>, the first cell is the GPIO number and the second - cell is the gpio flags in accordance with <dt-bindings/gpio/gpio.h>. -- gpio-controller: marks the device as a GPIO controller. -- #interrupt-cells: should be <2>, the first cell is the GPIO number and the - second cell is the interrupt flags in accordance with - <dt-bindings/interrupt-controller/irq.h>. -- interrupt-controller: marks the device as an interrupt controller. -- gpio-ranges: specifies the mapping between gpio controller and pin - controller pins. Check "Concerning gpio-ranges property" below. -Please refer to ../gpio/gpio.txt. - -Please refer to pinctrl-bindings.txt for pin configuration. - -Required properties for pin configuration sub-nodes: -- pins: list of pins to which the configuration applies. - -Optional properties for pin configuration sub-nodes (pinconf-generic ones): -- bias-disable: disable any bias on the pin. -- bias-pull-up: the pin will be pulled up. -- bias-pull-pin-default: use the pin-default pull state. -- bias-pull-down: the pin will be pulled down. -- drive-open-drain: the pin will be driven with open drain. -- drive-push-pull: the pin will be driven actively high and low. -- output-high: the pin will be configured as an output driving high level. -- output-low: the pin will be configured as an output driving low level. - -Note that STMFX pins[15:0] are called "gpio[15:0]", and STMFX pins[23:16] are -called "agpio[7:0]". Example, to refer to pin 18 of STMFX, use "agpio2". - -Concerning gpio-ranges property: -- if all STMFX pins[24:0] are available (no other STMFX function in use), you - should use gpio-ranges = <&stmfx_pinctrl 0 0 24>; -- if agpio[3:0] are not available (STMFX Touchscreen function in use), you - should use gpio-ranges = <&stmfx_pinctrl 0 0 16>, <&stmfx_pinctrl 20 20 4>; -- if agpio[7:4] are not available (STMFX IDD function in use), you - should use gpio-ranges = <&stmfx_pinctrl 0 0 20>; - - -Example: - - stmfx: stmfx@42 { - ... - - stmfx_pinctrl: stmfx-pin-controller { - compatible = "st,stmfx-0300-pinctrl"; - #gpio-cells = <2>; - #interrupt-cells = <2>; - gpio-controller; - interrupt-controller; - gpio-ranges = <&stmfx_pinctrl 0 0 24>; - - joystick_pins: joystick { - pins = "gpio0", "gpio1", "gpio2", "gpio3", "gpio4"; - drive-push-pull; - bias-pull-up; - }; - }; - }; - -Example of STMFX GPIO consumers: - - joystick { - compatible = "gpio-keys"; - #address-cells = <1>; - #size-cells = <0>; - pinctrl-0 = <&joystick_pins>; - pinctrl-names = "default"; - button-0 { - label = "JoySel"; - linux,code = <KEY_ENTER>; - interrupt-parent = <&stmfx_pinctrl>; - interrupts = <0 IRQ_TYPE_EDGE_RISING>; - }; - button-1 { - label = "JoyDown"; - linux,code = <KEY_DOWN>; - interrupt-parent = <&stmfx_pinctrl>; - interrupts = <1 IRQ_TYPE_EDGE_RISING>; - }; - button-2 { - label = "JoyLeft"; - linux,code = <KEY_LEFT>; - interrupt-parent = <&stmfx_pinctrl>; - interrupts = <2 IRQ_TYPE_EDGE_RISING>; - }; - button-3 { - label = "JoyRight"; - linux,code = <KEY_RIGHT>; - interrupt-parent = <&stmfx_pinctrl>; - interrupts = <3 IRQ_TYPE_EDGE_RISING>; - }; - button-4 { - label = "JoyUp"; - linux,code = <KEY_UP>; - interrupt-parent = <&stmfx_pinctrl>; - interrupts = <4 IRQ_TYPE_EDGE_RISING>; - }; - }; - - leds { - compatible = "gpio-leds"; - orange { - gpios = <&stmfx_pinctrl 17 1>; - }; - - blue { - gpios = <&stmfx_pinctrl 19 1>; - }; - } |