diff options
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/gpio-mxs.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-mxs.yaml | 160 |
1 files changed, 115 insertions, 45 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-mxs.yaml b/Documentation/devicetree/bindings/gpio/gpio-mxs.yaml index dfa1133f8c5e..fed1b06495ad 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-mxs.yaml +++ b/Documentation/devicetree/bindings/gpio/gpio-mxs.yaml @@ -8,7 +8,6 @@ title: Freescale MXS GPIO controller maintainers: - Shawn Guo <shawnguo@kernel.org> - - Anson Huang <Anson.Huang@nxp.com> description: | The Freescale MXS GPIO controller is part of MXS PIN controller. @@ -19,12 +18,17 @@ description: | properties: compatible: - enum: - - fsl,imx23-pinctrl - - fsl,imx28-pinctrl + items: + - enum: + - fsl,imx23-pinctrl + - fsl,imx28-pinctrl + # Over 10 years old devices, driver use simple-bus to probe child gpio + # Devices. Keep it as it to be compatible existed dts files. + - const: simple-bus '#address-cells': const: 1 + '#size-cells': const: 0 @@ -32,7 +36,65 @@ properties: maxItems: 1 patternProperties: - "gpio@[0-9]+$": + '^(?!gpio@)[^@]+@[0-9]+$': + type: object + properties: + fsl,pinmux-ids: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: | + An integer array. Each integer in the array specify a pin + with given mux function, with bank, pin and mux packed as below. + + [15..12] : bank number + [11..4] : pin number + [3..0] : mux selection + + This integer with mux selection packed is used as an entity by both group + and config nodes to identify a pin. The mux selection in the integer takes + effects only on group node, and will get ignored by driver with config node, + since config node is only meant to set up pin configurations. + + Valid values for these integers are listed below. + + reg: + items: + - description: | + pin group index. NOTE: it is supposed wrong use reg property + here. But it is over 10 years devices. Just keep it as it. + + fsl,drive-strength: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + description: | + 0: MXS_DRIVE_4mA + 1: MXS_DRIVE_8mA + 2: MXS_DRIVE_12mA + 3: MXS_DRIVE_16mA + + fsl,voltage: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + 0: MXS_VOLTAGE_LOW - 1.8 V + 1: MXS_VOLTAGE_HIGH - 3.3 V + + fsl,pull-up: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + 0: MXS_PULL_DISABLE - Disable the internal pull-up + 1: MXS_PULL_ENABLE - Enable the internal pull-up + + Note that when enabling the pull-up, the internal pad keeper gets disabled. + Also, some pins doesn't have a pull up, in that case, setting the fsl,pull-up + will only disable the internal pad keeper. + + required: + - fsl,pinmux-ids + + additionalProperties: false + + '^gpio@[0-9]+$': type: object properties: compatible: @@ -49,10 +111,10 @@ patternProperties: interrupt-controller: true - "#interrupt-cells": + '#interrupt-cells': const: 2 - "#gpio-cells": + '#gpio-cells': const: 2 gpio-controller: true @@ -62,8 +124,8 @@ patternProperties: - reg - interrupts - interrupt-controller - - "#interrupt-cells" - - "#gpio-cells" + - '#interrupt-cells' + - '#gpio-cells' - gpio-controller additionalProperties: false @@ -81,56 +143,64 @@ examples: pinctrl@80018000 { #address-cells = <1>; #size-cells = <0>; - compatible = "fsl,imx28-pinctrl"; + compatible = "fsl,imx28-pinctrl", "simple-bus"; reg = <0x80018000 0x2000>; gpio@0 { - compatible = "fsl,imx28-gpio"; - reg = <0>; - interrupts = <127>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; + compatible = "fsl,imx28-gpio"; + reg = <0>; + interrupts = <127>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; }; gpio@1 { - compatible = "fsl,imx28-gpio"; - reg = <1>; - interrupts = <126>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; + compatible = "fsl,imx28-gpio"; + reg = <1>; + interrupts = <126>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; }; gpio@2 { - compatible = "fsl,imx28-gpio"; - reg = <2>; - interrupts = <125>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; + compatible = "fsl,imx28-gpio"; + reg = <2>; + interrupts = <125>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; }; gpio@3 { - compatible = "fsl,imx28-gpio"; - reg = <3>; - interrupts = <124>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; + compatible = "fsl,imx28-gpio"; + reg = <3>; + interrupts = <124>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; }; gpio@4 { - compatible = "fsl,imx28-gpio"; - reg = <4>; - interrupts = <123>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; + compatible = "fsl,imx28-gpio"; + reg = <4>; + interrupts = <123>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + }; + + lcdif-apx4@5 { + reg = <5>; + fsl,pinmux-ids = <0x1181 0x1191>; + fsl,drive-strength = <0>; + fsl,voltage = <0>; + fsl,pull-up = <0>; }; }; |