From: Jacky Huang <ychuang3@xxxxxxxxxxx> Add documentation to describe nuvoton ma35d1 pin control and GPIO. Signed-off-by: Jacky Huang <ychuang3@xxxxxxxxxxx> --- .../pinctrl/nuvoton,ma35d1-pinctrl.yaml | 189 ++++++++++++++++++ 1 file changed, 189 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/nuvoton,ma35d1-pinctrl.yaml diff --git a/Documentation/devicetree/bindings/pinctrl/nuvoton,ma35d1-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/nuvoton,ma35d1-pinctrl.yaml new file mode 100644 index 000000000000..84287293a726 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/nuvoton,ma35d1-pinctrl.yaml @@ -0,0 +1,189 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/nuvoton,ma35d1-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nuvoton MA35D1 pin control and GPIO + +maintainers: + - Shan-Chun Hung <schung@xxxxxxxxxxx> + +properties: + compatible: + enum: + - nuvoton,ma35d1-pinctrl + + '#address-cells': + const: 1 + + '#size-cells': + const: 1 + + nuvoton,sys: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle of the system-management node. + + ranges: true + +allOf: + - $ref: pinctrl.yaml# + +required: + - compatible + - nuvoton,sys + +patternProperties: + "^gpio@[0-9a-f]+$": + type: object + additionalProperties: false + properties: + gpio-controller: true + + '#gpio-cells': + const: 2 + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + interrupt-controller: true + + '#interrupt-cells': + const: 2 + + interrupts: + description: + The interrupt outputs to sysirq. + maxItems: 1 + + required: + - gpio-controller + - '#gpio-cells' + - reg + - clocks + - interrupt-controller + - '#interrupt-cells' + - interrupts + + "^pin-[a-z0-9]+$": + type: object + description: + A pinctrl node should contain at least one subnodes representing the + pinctrl groups available on the machine. Each subnode will list the + pins it needs, and how they should be configured, with regard to muxer + configuration, pullups, drive strength, input enable/disable and input + schmitt. + + allOf: + - $ref: pincfg-node.yaml# + + properties: + bias-disable: true + + bias-pull-down: true + + bias-pull-up: true + + power-source: + description: | + Valid arguments are described as below: + 0: power supply of 1.8V + 1: power supply of 3.3V + enum: [0, 1] + + drive-strength-microamp: + oneOf: + - enum: [ 2900, 4400, 5800, 7300, 8600, 10100, 11500, 13000 ] + description: 1.8V I/O driving strength + - enum: [ 17100, 25600, 34100, 42800, 48000, 56000, 77000, 82000 ] + description: 3.3V I/O driving strength + + input-enable: true + + input-schmitt-enable: true + + unevaluatedProperties: false + + "-grp$": + type: object + description: + Pinctrl node's client devices use subnodes for desired pin configuration. + Client device subnodes use below standard properties. + properties: + nuvoton,pins: + description: + Each entry consists of 4 parameters and represents the mux and config + setting for one pin. + $ref: /schemas/types.yaml#/definitions/uint32-matrix + minItems: 1 + items: + items: + - minimum: 0 + maximum: 13 + description: + Pin bank. + - minimum: 0 + maximum: 15 + description: + Pin bank index. + - minimum: 0 + maximum: 15 + description: + Mux 0 means GPIO and mux 1 to 15 means the specific device function. + - description: + The phandle of a node contains the generic pinconfig options + to use as described in pinctrl-bindings.txt. + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/clock/nuvoton,ma35d1-clk.h> + #include <dt-bindings/pinctrl/ma35d1-pinfunc.h> + + pinctrl@40040000 { + compatible = "nuvoton,ma35d1-pinctrl"; + #address-cells = <1>; + #size-cells = <1>; + nuvoton,sys = <&sys>; + ranges = <0 0x40040000 0xc00>; + + gpio@40040000 { + reg = <0x0 0x40>; + interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clk GPA_GATE>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + }; + + pcfg_default: pin-default { + slew-rate = <0>; + input-schmitt-disable; + bias-disable; + power-source = <1>; + drive-strength-microamp = <17100>; + }; + + uart-grp { + uart11-pins { + nuvoton,pins = <11 0 2 &pcfg_default>, + <11 1 2 &pcfg_default>, + <11 2 2 &pcfg_default>, + <11 3 2 &pcfg_default>; + }; + + uart12-pins { + nuvoton,pins = <8 1 2 &pcfg_default>, + <8 2 2 &pcfg_default>, + <8 3 2 &pcfg_default>; + }; + }; + }; -- 2.34.1
