The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/pinctrl/mediatek,mt65xx-pinctrl.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Mediatek MT65xx Pin Controller Device Tree Bindings
    8 
    9 maintainers:
   10   - Sean Wang <sean.wang@kernel.org>
   11 
   12 description: |+
   13   The Mediatek's Pin controller is used to control SoC pins.
   14 
   15 properties:
   16   compatible:
   17     enum:
   18       - mediatek,mt2701-pinctrl
   19       - mediatek,mt2712-pinctrl
   20       - mediatek,mt6397-pinctrl
   21       - mediatek,mt7623-pinctrl
   22       - mediatek,mt8127-pinctrl
   23       - mediatek,mt8135-pinctrl
   24       - mediatek,mt8167-pinctrl
   25       - mediatek,mt8173-pinctrl
   26       - mediatek,mt8516-pinctrl
   27 
   28   reg:
   29     maxItems: 1
   30 
   31   pins-are-numbered:
   32     $ref: /schemas/types.yaml#/definitions/flag
   33     description: |
   34       Specify the subnodes are using numbered pinmux to specify pins.
   35 
   36   gpio-controller: true
   37 
   38   "#gpio-cells":
   39     const: 2
   40     description: |
   41       Number of cells in GPIO specifier. Since the generic GPIO
   42       binding is used, the amount of cells must be specified as 2. See the below
   43       mentioned gpio binding representation for description of particular cells.
   44 
   45   mediatek,pctl-regmap:
   46     $ref: /schemas/types.yaml#/definitions/phandle-array
   47     items:
   48       maxItems: 1
   49     minItems: 1
   50     maxItems: 2
   51     description: |
   52       Should be phandles of the syscfg node.
   53 
   54   interrupt-controller: true
   55 
   56   interrupts:
   57     minItems: 1
   58     maxItems: 3
   59 
   60   "#interrupt-cells":
   61     const: 2
   62 
   63 required:
   64   - compatible
   65   - pins-are-numbered
   66   - gpio-controller
   67   - "#gpio-cells"
   68 
   69 allOf:
   70   - $ref: "pinctrl.yaml#"
   71 
   72 patternProperties:
   73   '-[0-9]+$':
   74     type: object
   75     additionalProperties: false
   76     patternProperties:
   77       'pins':
   78         type: object
   79         additionalProperties: false
   80         description: |
   81           A pinctrl node should contain at least one subnodes representing the
   82           pinctrl groups available on the machine. Each subnode will list the
   83           pins it needs, and how they should be configured, with regard to muxer
   84           configuration, pullups, drive strength, input enable/disable and input
   85           schmitt.
   86         $ref: "/schemas/pinctrl/pincfg-node.yaml"
   87 
   88         properties:
   89           pinmux:
   90             description:
   91               integer array, represents gpio pin number and mux setting.
   92               Supported pin number and mux varies for different SoCs, and are
   93               defined as macros in <soc>-pinfunc.h directly.
   94 
   95           bias-disable: true
   96 
   97           bias-pull-up:
   98             description: |
   99               Besides generic pinconfig options, it can be used as the pull up
  100               settings for 2 pull resistors, R0 and R1. User can configure those
  101               special pins. Some macros have been defined for this usage, such
  102               as MTK_PUPD_SET_R1R0_00. See dt-bindings/pinctrl/mt65xx.h for
  103               valid arguments.
  104 
  105           bias-pull-down: true
  106 
  107           input-enable: true
  108 
  109           input-disable: true
  110 
  111           output-low: true
  112 
  113           output-high: true
  114 
  115           input-schmitt-enable: true
  116 
  117           input-schmitt-disable: true
  118 
  119           drive-strength:
  120             description: |
  121               Can support some arguments, such as MTK_DRIVE_4mA, MTK_DRIVE_6mA,
  122               etc. See dt-bindings/pinctrl/mt65xx.h for valid arguments.
  123 
  124         required:
  125           - pinmux
  126 
  127 additionalProperties: false
  128 
  129 examples:
  130   - |
  131     #include <dt-bindings/interrupt-controller/irq.h>
  132     #include <dt-bindings/interrupt-controller/arm-gic.h>
  133     #include <dt-bindings/pinctrl/mt8135-pinfunc.h>
  134 
  135     soc {
  136         #address-cells = <2>;
  137         #size-cells = <2>;
  138 
  139         syscfg_pctl_a: syscfg-pctl-a@10005000 {
  140           compatible = "mediatek,mt8135-pctl-a-syscfg", "syscon";
  141           reg = <0 0x10005000 0 0x1000>;
  142         };
  143 
  144         syscfg_pctl_b: syscfg-pctl-b@1020c020 {
  145           compatible = "mediatek,mt8135-pctl-b-syscfg", "syscon";
  146           reg = <0 0x1020C020 0 0x1000>;
  147         };
  148 
  149         pinctrl@1c20800 {
  150           compatible = "mediatek,mt8135-pinctrl";
  151           reg = <0 0x1000B000 0 0x1000>;
  152           mediatek,pctl-regmap = <&syscfg_pctl_a>, <&syscfg_pctl_b>;
  153           pins-are-numbered;
  154           gpio-controller;
  155           #gpio-cells = <2>;
  156           interrupt-controller;
  157           #interrupt-cells = <2>;
  158           interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>,
  159               <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>,
  160               <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>;
  161 
  162           i2c0_pins_a: i2c0-0 {
  163             pins1 {
  164               pinmux = <MT8135_PIN_100_SDA0__FUNC_SDA0>,
  165                 <MT8135_PIN_101_SCL0__FUNC_SCL0>;
  166               bias-disable;
  167             };
  168           };
  169 
  170           i2c1_pins_a: i2c1-0 {
  171             pins {
  172               pinmux = <MT8135_PIN_195_SDA1__FUNC_SDA1>,
  173                 <MT8135_PIN_196_SCL1__FUNC_SCL1>;
  174               bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
  175             };
  176           };
  177 
  178           i2c2_pins_a: i2c2-0 {
  179             pins1 {
  180               pinmux = <MT8135_PIN_193_SDA2__FUNC_SDA2>;
  181               bias-pull-down;
  182             };
  183 
  184             pins2 {
  185               pinmux = <MT8135_PIN_49_WATCHDOG__FUNC_GPIO49>;
  186               bias-pull-up;
  187             };
  188           };
  189 
  190           i2c3_pins_a: i2c3-0 {
  191             pins1 {
  192               pinmux = <MT8135_PIN_40_DAC_CLK__FUNC_GPIO40>,
  193                 <MT8135_PIN_41_DAC_WS__FUNC_GPIO41>;
  194               bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
  195             };
  196 
  197             pins2 {
  198               pinmux = <MT8135_PIN_35_SCL3__FUNC_SCL3>,
  199                 <MT8135_PIN_36_SDA3__FUNC_SDA3>;
  200               output-low;
  201               bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
  202             };
  203 
  204             pins3 {
  205               pinmux = <MT8135_PIN_57_JTCK__FUNC_GPIO57>,
  206                 <MT8135_PIN_60_JTDI__FUNC_JTDI>;
  207               drive-strength = <32>;
  208             };
  209           };
  210         };
  211     };

Cache object: 9a72f5ae9770ae6e0ef26b355b7532f1


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