Commit a268b155 authored by Jonathan Neuschäfer's avatar Jonathan Neuschäfer Committed by Joel Stanley
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dt-bindings: arm/npcm: Add binding for global control registers (GCR) 



A nuvoton,*-gcr node is present in nuvoton-common-npcm7xx.dtsi and will
be added to nuvoton-wpcm450.dtsi. It is necessary for the NPCM7xx and
WPCM450 pinctrl drivers, and may later be used to retrieve SoC model and
version information.

This patch adds a binding to describe this node.

Signed-off-by: default avatarJonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220129115228.2257310-2-j.neuschaefer@gmx.net


Signed-off-by: default avatarJoel Stanley <joel@jms.id.au>
parent e783362e

Documentation/devicetree/bindings/arm/npcm/nuvoton,gcr.yaml

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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/arm/npcm/nuvoton,gcr.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Global Control Registers block in Nuvoton SoCs



maintainers:

  - Jonathan Neuschäfer <j.neuschaefer@gmx.net>



description:

  The Global Control Registers (GCR) are a block of registers in Nuvoton SoCs

  that expose misc functionality such as chip model and version information or

  pinmux settings.



properties:

  compatible:

    items:

      - enum:

          - nuvoton,wpcm450-gcr

          - nuvoton,npcm750-gcr

      - const: syscon

      - const: simple-mfd



  reg:

    maxItems: 1



required:

  - compatible

  - reg



additionalProperties:

  type: object



examples:

  - |

    gcr: syscon@800000 {

      compatible = "nuvoton,npcm750-gcr", "syscon", "simple-mfd";

      reg = <0x800000 0x1000>;



      mux-controller {

        compatible = "mmio-mux";

        #mux-control-cells = <1>;

        mux-reg-masks = <0x38 0x07>;

        idle-states = <2>;

      };

    };