pinctrl-mt8195.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/pinctrl-mt8195.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Mediatek MT8195 Pin Controller
    8 
    9 maintainers:
   10   - Sean Wang <sean.wang@mediatek.com>
   11 
   12 description: |
   13   The Mediatek's Pin controller is used to control SoC pins.
   14 
   15 properties:
   16   compatible:
   17     const: mediatek,mt8195-pinctrl
   18 
   19   gpio-controller: true
   20 
   21   '#gpio-cells':
   22     description: |
   23       Number of cells in GPIO specifier. Since the generic GPIO binding is used,
   24       the amount of cells must be specified as 2. See the below
   25       mentioned gpio binding representation for description of particular cells.
   26     const: 2
   27 
   28   gpio-ranges:
   29     description: gpio valid number range.
   30     maxItems: 1
   31 
   32   gpio-line-names: true
   33 
   34   reg:
   35     description: |
   36       Physical address base for gpio base registers. There are 8 GPIO
   37       physical address base in mt8195.
   38     maxItems: 8
   39 
   40   reg-names:
   41     description: |
   42       Gpio base register names.
   43     maxItems: 8
   44 
   45   interrupt-controller: true
   46 
   47   '#interrupt-cells':
   48     const: 2
   49 
   50   interrupts:
   51     description: The interrupt outputs to sysirq.
   52     maxItems: 1
   53 
   54   mediatek,rsel-resistance-in-si-unit:
   55     type: boolean
   56     description: |
   57       Identifying i2c pins pull up/down type which is RSEL. It can support
   58       RSEL define or si unit value(ohm) to set different resistance.
   59 
   60 # PIN CONFIGURATION NODES
   61 patternProperties:
   62   '-pins$':
   63     type: object
   64     additionalProperties: false
   65     patternProperties:
   66       '^pins':
   67         type: object
   68         additionalProperties: false
   69         description: |
   70           A pinctrl node should contain at least one subnodes representing the
   71           pinctrl groups available on the machine. Each subnode will list the
   72           pins it needs, and how they should be configured, with regard to muxer
   73           configuration, pullups, drive strength, input enable/disable and
   74           input schmitt.
   75           An example of using macro:
   76           pincontroller {
   77             /* GPIO0 set as multifunction GPIO0 */
   78             gpio-pins {
   79               pins {
   80                 pinmux = <PINMUX_GPIO0__FUNC_GPIO0>;
   81               }
   82             };
   83             /* GPIO8 set as multifunction SDA0 */
   84             i2c0-pins {
   85               pins {
   86                 pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
   87               }
   88             };
   89           };
   90         $ref: "pinmux-node.yaml"
   91 
   92         properties:
   93           pinmux:
   94             description: |
   95               Integer array, represents gpio pin number and mux setting.
   96               Supported pin number and mux varies for different SoCs, and are
   97               defined as macros in dt-bindings/pinctrl/<soc>-pinfunc.h
   98               directly.
   99 
  100           drive-strength:
  101             enum: [2, 4, 6, 8, 10, 12, 14, 16]
  102 
  103           drive-strength-microamp:
  104             enum: [125, 250, 500, 1000]
  105 
  106           bias-pull-down:
  107             oneOf:
  108               - type: boolean
  109               - enum: [100, 101, 102, 103]
  110                 description: mt8195 pull down PUPD/R0/R1 type define value.
  111               - enum: [200, 201, 202, 203, 204, 205, 206, 207]
  112                 description: mt8195 pull down RSEL type define value.
  113               - enum: [75000, 5000]
  114                 description: mt8195 pull down RSEL type si unit value(ohm).
  115             description: |
  116               For pull down type is normal, it don't need add RSEL & R1R0 define
  117               and resistance value.
  118               For pull down type is PUPD/R0/R1 type, it can add R1R0 define to
  119               set different resistance. It can support "MTK_PUPD_SET_R1R0_00" &
  120               "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" &
  121               "MTK_PUPD_SET_R1R0_11" define in mt8195.
  122               For pull down type is RSEL, it can add RSEL define & resistance
  123               value(ohm) to set different resistance by identifying property
  124               "mediatek,rsel-resistance-in-si-unit".
  125               It can support "MTK_PULL_SET_RSEL_000" & "MTK_PULL_SET_RSEL_001"
  126               & "MTK_PULL_SET_RSEL_010" & "MTK_PULL_SET_RSEL_011"
  127               & "MTK_PULL_SET_RSEL_100" & "MTK_PULL_SET_RSEL_101"
  128               & "MTK_PULL_SET_RSEL_110" & "MTK_PULL_SET_RSEL_111"
  129               define in mt8195. It can also support resistance value(ohm)
  130               "75000" & "5000" in mt8195.
  131 
  132               An example of using RSEL define:
  133               pincontroller {
  134                 i2c0_pin {
  135                   pins {
  136                     pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
  137                     bias-pull-down = <MTK_PULL_SET_RSEL_001>;
  138                   }
  139                 };
  140               };
  141               An example of using si unit resistance value(ohm):
  142               &pio {
  143                 mediatek,rsel-resistance-in-si-unit;
  144               }
  145               pincontroller {
  146                 i2c0_pin {
  147                   pins {
  148                     pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
  149                     bias-pull-down = <75000>;
  150                   }
  151                 };
  152               };
  153 
  154           bias-pull-up:
  155             oneOf:
  156               - type: boolean
  157               - enum: [100, 101, 102, 103]
  158                 description: mt8195 pull up PUPD/R0/R1 type define value.
  159               - enum: [200, 201, 202, 203, 204, 205, 206, 207]
  160                 description: mt8195 pull up RSEL type define value.
  161               - enum: [1000, 1500, 2000, 3000, 4000, 5000, 10000, 75000]
  162                 description: mt8195 pull up RSEL type si unit value(ohm).
  163             description: |
  164               For pull up type is normal, it don't need add RSEL & R1R0 define
  165               and resistance value.
  166               For pull up type is PUPD/R0/R1 type, it can add R1R0 define to
  167               set different resistance. It can support "MTK_PUPD_SET_R1R0_00" &
  168               "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" &
  169               "MTK_PUPD_SET_R1R0_11" define in mt8195.
  170               For pull up type is RSEL, it can add RSEL define & resistance
  171               value(ohm) to set different resistance by identifying property
  172               "mediatek,rsel-resistance-in-si-unit".
  173               It can support "MTK_PULL_SET_RSEL_000" & "MTK_PULL_SET_RSEL_001"
  174               & "MTK_PULL_SET_RSEL_010" & "MTK_PULL_SET_RSEL_011"
  175               & "MTK_PULL_SET_RSEL_100" & "MTK_PULL_SET_RSEL_101"
  176               & "MTK_PULL_SET_RSEL_110" & "MTK_PULL_SET_RSEL_111"
  177               define in mt8195. It can also support resistance value(ohm)
  178               "1000" & "1500" & "2000" & "3000" & "4000" & "5000" & "10000" &
  179               "75000" in mt8195.
  180               An example of using RSEL define:
  181               pincontroller {
  182                 i2c0-pins {
  183                   pins {
  184                     pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
  185                     bias-pull-up = <MTK_PULL_SET_RSEL_001>;
  186                   }
  187                 };
  188               };
  189               An example of using si unit resistance value(ohm):
  190               &pio {
  191                 mediatek,rsel-resistance-in-si-unit;
  192               }
  193               pincontroller {
  194                 i2c0-pins {
  195                   pins {
  196                     pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
  197                     bias-pull-up = <1000>;
  198                   }
  199                 };
  200               };
  201 
  202           bias-disable: true
  203 
  204           output-high: true
  205 
  206           output-low: true
  207 
  208           input-enable: true
  209 
  210           input-disable: true
  211 
  212           input-schmitt-enable: true
  213 
  214           input-schmitt-disable: true
  215 
  216         required:
  217           - pinmux
  218 
  219 allOf:
  220   - $ref: "pinctrl.yaml#"
  221 
  222 required:
  223   - compatible
  224   - reg
  225   - interrupts
  226   - interrupt-controller
  227   - '#interrupt-cells'
  228   - gpio-controller
  229   - '#gpio-cells'
  230   - gpio-ranges
  231 
  232 additionalProperties: false
  233 
  234 examples:
  235   - |
  236     #include <dt-bindings/pinctrl/mt8195-pinfunc.h>
  237     #include <dt-bindings/interrupt-controller/arm-gic.h>
  238     #
  239     pio: pinctrl@10005000 {
  240       compatible = "mediatek,mt8195-pinctrl";
  241       reg = <0x10005000 0x1000>,
  242             <0x11d10000 0x1000>,
  243             <0x11d30000 0x1000>,
  244             <0x11d40000 0x1000>,
  245             <0x11e20000 0x1000>,
  246             <0x11eb0000 0x1000>,
  247             <0x11f40000 0x1000>,
  248             <0x1000b000 0x1000>;
  249       reg-names = "iocfg0", "iocfg_bm", "iocfg_bl",
  250                   "iocfg_br", "iocfg_lm", "iocfg_rb",
  251                   "iocfg_tl", "eint";
  252       gpio-controller;
  253       #gpio-cells = <2>;
  254       gpio-ranges = <&pio 0 0 144>;
  255       interrupt-controller;
  256       interrupts = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH 0>;
  257       #interrupt-cells = <2>;
  258 
  259       pio-pins {
  260         pins {
  261           pinmux = <PINMUX_GPIO0__FUNC_GPIO0>;
  262           output-low;
  263         };
  264       };
  265 
  266       spi0-pins {
  267         pins-spi {
  268           pinmux = <PINMUX_GPIO132__FUNC_SPIM0_CSB>,
  269                    <PINMUX_GPIO134__FUNC_SPIM0_MO>,
  270                    <PINMUX_GPIO133__FUNC_SPIM0_CLK>;
  271           bias-disable;
  272         };
  273         pins-spi-mi {
  274           pinmux = <PINMUX_GPIO135__FUNC_SPIM0_MI>;
  275           bias-pull-down;
  276         };
  277       };
  278 
  279       i2c0-pins {
  280         pins {
  281           pinmux = <PINMUX_GPIO8__FUNC_SDA0>,
  282                    <PINMUX_GPIO9__FUNC_SCL0>;
  283           bias-disable;
  284           drive-strength-microamp = <1000>;
  285         };
  286       };
  287     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/pinctrl/pinctrl-mt8195.yaml

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sys/contrib/device-tree/Bindings/pinctrl/pinctrl-mt8195.yaml