Commit 31fc1c63 authored by Tony Lindgren's avatar Tony Lindgren Committed by Rob Herring
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dt-bindings: clock: Add binding for TI clksel 



In order to prepare for fixing lots of devicetree unique_unit_address
warnings for the TI clock nodes, let's add a binding for the TI clksel
clocks. This allows us to move the overlapping reg properties for the
component clocks to be children of the related clksel nodes. And with
that we need the reg property only for the parent clksel node making
the reg property unique like it should be.

We want to set #clock-cells = <2> in case we ever start parsing ranges
of clkcsel instances directly using a clksel driver rather than using the
existing component clock drivers and child nodes.

And before the devicetree files can be updated, we need to update the
TI clock drivers to get the IO address from the parent clksel node.

Cc: Tero Kristo <kristo@kernel.org>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220203073929.59296-1-tony@atomide.com
parent 208b65f7

Documentation/devicetree/bindings/clock/ti/ti,clksel.yaml

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/clock/ti/ti,clksel.yaml#

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



title: Binding for TI clksel clock



maintainers:

  - Tony Lindgren <tony@atomide.com>



description: |

  The TI CLKSEL clocks consist of consist of input clock mux bits, and in some

  cases also has divider, multiplier and gate bits.



properties:

  compatible:

    const: ti,clksel



  reg:

    maxItems: 1

    description: The CLKSEL register range



  '#address-cells':

    enum: [ 0, 1, 2 ]



  '#size-cells':

    enum: [ 0, 1, 2 ]



  ranges: true



  "#clock-cells":

    const: 2

    description: The CLKSEL register and bit offset



required:

  - compatible

  - reg

  - "#clock-cells"



additionalProperties:

  type: object



examples:

  - |

    clksel_gfx_fclk: clock@52c {

      compatible = "ti,clksel";

      reg = <0x25c 0x4>;

      #clock-cells = <2>;

    };

...