nvidia,tegra124-dpaux.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/display/tegra/nvidia,tegra124-dpaux.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: NVIDIA Tegra DisplayPort AUX Interface
    8 
    9 maintainers:
   10   - Thierry Reding <thierry.reding@gmail.com>
   11   - Jon Hunter <jonathanh@nvidia.com>
   12 
   13 description: |
   14   The Tegra Display Port Auxiliary (DPAUX) pad controller manages two
   15   pins which can be assigned to either the DPAUX channel or to an I2C
   16   controller.
   17 
   18   When configured for DisplayPort AUX operation, the DPAUX controller
   19   can also be used to communicate with a DisplayPort device using the
   20   AUX channel.
   21 
   22 properties:
   23   $nodename:
   24     pattern: "^dpaux@[0-9a-f]+$"
   25 
   26   compatible:
   27     oneOf:
   28       - enum:
   29           - nvidia,tegra124-dpaux
   30           - nvidia,tegra210-dpaux
   31           - nvidia,tegra186-dpaux
   32           - nvidia,tegra194-dpaux
   33 
   34       - items:
   35           - const: nvidia,tegra132-dpaux
   36           - const: nvidia,tegra124-dpaux
   37 
   38   reg:
   39     maxItems: 1
   40 
   41   interrupts:
   42     maxItems: 1
   43 
   44   clocks:
   45     items:
   46       - description: clock input for the DPAUX hardware
   47       - description: reference clock
   48 
   49   clock-names:
   50     items:
   51       - const: dpaux
   52       - const: parent
   53 
   54   resets:
   55     items:
   56       - description: module reset
   57 
   58   reset-names:
   59     items:
   60       - const: dpaux
   61 
   62   power-domains:
   63     maxItems: 1
   64 
   65   i2c-bus:
   66     description: Subnode where I2C slave devices are listed. This
   67       subnode must be always present. If there are no I2C slave
   68       devices, an empty node should be added. See ../../i2c/i2c.yaml
   69       for more information.
   70     type: object
   71 
   72   aux-bus:
   73     $ref: /schemas/display/dp-aux-bus.yaml#
   74 
   75   vdd-supply:
   76     description: phandle of a supply that powers the DisplayPort
   77       link
   78 
   79 patternProperties:
   80   "^pinmux-[a-z0-9]+$":
   81     description:
   82       Since only three configurations are possible, only three child
   83       nodes are needed to describe the pin mux'ing options for the
   84       DPAUX pads. Furthermore, given that the pad functions are only
   85       applicable to a single set of pads, the child nodes only need
   86       to describe the pad group the functions are being applied to
   87       rather than the individual pads.
   88     type: object
   89     properties:
   90       groups:
   91         const: dpaux-io
   92 
   93       function:
   94         enum:
   95           - aux
   96           - i2c
   97           - off
   98 
   99     additionalProperties: false
  100 
  101     required:
  102       - groups
  103       - function
  104 
  105 additionalProperties: false
  106 
  107 required:
  108   - compatible
  109   - reg
  110   - interrupts
  111   - clocks
  112   - clock-names
  113   - resets
  114   - reset-names
  115 
  116 examples:
  117   - |
  118     #include <dt-bindings/clock/tegra210-car.h>
  119     #include <dt-bindings/interrupt-controller/arm-gic.h>
  120 
  121     dpaux: dpaux@545c0000 {
  122         compatible = "nvidia,tegra210-dpaux";
  123         reg = <0x545c0000 0x00040000>;
  124         interrupts = <GIC_SPI 159 IRQ_TYPE_LEVEL_HIGH>;
  125         clocks = <&tegra_car TEGRA210_CLK_DPAUX>,
  126                  <&tegra_car TEGRA210_CLK_PLL_DP>;
  127         clock-names = "dpaux", "parent";
  128         resets = <&tegra_car 181>;
  129         reset-names = "dpaux";
  130         power-domains = <&pd_sor>;
  131         status = "disabled";
  132 
  133         state_dpaux_aux: pinmux-aux {
  134             groups = "dpaux-io";
  135             function = "aux";
  136         };
  137 
  138         state_dpaux_i2c: pinmux-i2c {
  139             groups = "dpaux-io";
  140             function = "i2c";
  141         };
  142 
  143         state_dpaux_off: pinmux-off {
  144             groups = "dpaux-io";
  145             function = "off";
  146         };
  147 
  148         i2c-bus {
  149             #address-cells = <1>;
  150             #size-cells = <0>;
  151         };
  152     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/display/tegra/nvidia,tegra124-dpaux.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/display/tegra/nvidia,tegra124-dpaux.yaml