Bindings/pinctrl/canaan,k210-fpioa.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/pinctrl/canaan,k210-fpioa.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Canaan Kendryte K210 FPIOA
   8
   9 maintainers:
  10   - Damien Le Moal <dlemoal@kernel.org>
  11
  12 description:
  13   The Canaan Kendryte K210 SoC Fully Programmable IO Array (FPIOA)
  14   controller allows assigning any of 256 possible functions to any of
  15   48 IO pins of the SoC. Pin function configuration is performed on
  16   a per-pin basis.
  17
  18 properties:
  19   compatible:
  20     const: canaan,k210-fpioa
  21
  22   reg:
  23     maxItems: 1
  24     description:
  25       Address and length of the register set for the FPIOA controller.
  26
  27   clocks:
  28     items:
  29       - description: Controller reference clock source
  30       - description: APB interface clock source
  31
  32   clock-names:
  33     items:
  34       - const: ref
  35       - const: pclk
  36
  37   resets:
  38     maxItems: 1
  39
  40   canaan,k210-sysctl-power:
  41     $ref: /schemas/types.yaml#/definitions/phandle-array
  42     items:
  43       - items:
  44           - description: phandle of the K210 system controller node
  45           - description: offset of its power domain control register
  46     description: |
  47       phandle of the K210 system controller node and offset of its
  48       power domain control register.
  49
  50 patternProperties:
  51   '-pinmux$':
  52     type: object
  53     $ref: /schemas/pinctrl/pinmux-node.yaml
  54     description:
  55       FPIOA client devices use sub-nodes to define the desired pin
  56       configuration. Client device sub-nodes use the pinux property
  57       below.
  58
  59     properties:
  60       pinmux:
  61         description:
  62           List of IO pins alternate functions. The values for each IO
  63           pin is a combination of an IO pin number (0 to 47) with the
  64           desired function for the IO pin. Functions are defined as
  65           macros in include/dt-bindings/pinctrl/k210-fpioa.h.
  66           The K210_FPIOA(IO pin, function) macro is provided to
  67           facilitate the combination of IO pin numbers and functions.
  68
  69     required:
  70       - pinmux
  71
  72     additionalProperties: false
  73
  74   '-pins$':
  75     type: object
  76     $ref: /schemas/pinctrl/pincfg-node.yaml
  77     description:
  78       FPIOA client devices use sub-nodes to define the desired
  79       configuration of pins. Client device sub-nodes use the
  80       properties below.
  81
  82     properties:
  83       pins:
  84         description:
  85           List of IO pins affected by the properties specified in this
  86           subnode. IO pins are identified using the pin names "IO_xx".
  87           Pin configuration nodes can also define the power domain to
  88           be used for the SoC pin groups A0 (IO pins 0-5),
  89           A1 (IO pins 6-11), A2 (IO pins 12-17), B0 (IO pins 18-23),
  90           B1 (IO pins 24-29), B2 (IO pins 30-35), B3 (IO pins 30-35),
  91           C0 (IO pins 36-41) and C1 (IO pins 42-47) using the
  92           power-source property.
  93         items:
  94           anyOf:
  95             - pattern: "^(IO_([0-9]*))|(A[0-2])|(B[3-5])|(C[6-7])$"
  96             - enum: [ IO_0, IO_1, IO_2, IO_3, IO_4, IO_5, IO_6, IO_7,
  97                       IO_8, IO_9, IO_10, IO_11, IO_12, IO_13, IO_14,
  98                       IO_15, IO_16, IO_17, IO_18, IO_19, IO_20, IO_21,
  99                       IO_22, IO_23, IO_24, IO_25, IO_26, IO_27, IO_28,
 100                       IO_29, IO_30, IO_31, IO_32, IO_33, IO_34, IO_35,
 101                       IO_36, IO_37, IO_38, IO_39, IO_40, IO_41, IO_42,
 102                       IO_43, IO_44, IO_45, IO_46, IO_47,
 103                       A0, A1, A2, B3, B4, B5, C6, C7 ]
 104       bias-disable: true
 105
 106       bias-pull-down: true
 107
 108       bias-pull-up: true
 109
 110       drive-strength: true
 111
 112       drive-strength-microamp: true
 113
 114       input-enable: true
 115
 116       input-disable: true
 117
 118       input-schmitt-enable: true
 119
 120       input-schmitt-disable: true
 121
 122       input-polarity-invert:
 123         type: boolean
 124         description:
 125           Enable or disable pin input polarity inversion.
 126
 127       output-enable: true
 128
 129       output-disable: true
 130
 131       output-high: true
 132
 133       output-low: true
 134
 135       output-polarity-invert:
 136         type: boolean
 137         description:
 138           Enable or disable pin output polarity inversion.
 139
 140       slew-rate: true
 141
 142       power-source: true
 143
 144     additionalProperties: false
 145
 146 allOf:
 147   - $ref: pinctrl.yaml#
 148
 149 required:
 150   - compatible
 151   - reg
 152   - clocks
 153   - canaan,k210-sysctl-power
 154
 155 additionalProperties: false
 156
 157 examples:
 158   - |
 159     #include <dt-bindings/pinctrl/k210-fpioa.h>
 160     #include <dt-bindings/clock/k210-clk.h>
 161     #include <dt-bindings/reset/k210-rst.h>
 162
 163     fpioa: pinmux@502b0000 {
 164       compatible = "canaan,k210-fpioa";
 165       reg = <0x502b0000 0x100>;
 166       clocks = <&sysclk K210_CLK_FPIOA>,
 167                <&sysclk K210_CLK_APB0>;
 168       clock-names = "ref", "pclk";
 169       resets = <&sysrst K210_RST_FPIOA>;
 170       canaan,k210-sysctl-power = <&sysctl 108>;
 171       pinctrl-0 = <&jtag_pinctrl>;
 172       pinctrl-names = "default";
 173
 174       jtag_pinctrl: jtag-pinmux {
 175         pinmux = <K210_FPIOA(0, K210_PCF_JTAG_TCLK)>,
 176                  <K210_FPIOA(1, K210_PCF_JTAG_TDI)>,
 177                  <K210_FPIOA(2, K210_PCF_JTAG_TMS)>,
 178                  <K210_FPIOA(3, K210_PCF_JTAG_TDO)>;
 179       };
 180     };