Commit 9ae9c51b authored by Jayesh Choudhary's avatar Jayesh Choudhary Committed by Rob Herring
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dt-bindings: rng: convert OMAP and Inside-Secure HWRNG to yaml schema 



Converts the RNG bindings for OMAP SoCs and Inside-Secure
HWRNG modules to YAML schema.

Signed-off-by: default avatarJayesh Choudhary <j-choudhary@ti.com>
Link: https://lore.kernel.org/r/20210922085203.2547-1-j-choudhary@ti.com


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 050109f0

Documentation/devicetree/bindings/rng/omap_rng.txt

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OMAP SoC and Inside-Secure HWRNG Module



Required properties:



- compatible : Should contain entries for this and backward compatible

  RNG versions:

  - "ti,omap2-rng" for OMAP2.

  - "ti,omap4-rng" for OMAP4, OMAP5 and AM33XX.

  - "inside-secure,safexcel-eip76" for SoCs with EIP76 IP block

  Note that these two versions are incompatible.

- ti,hwmods: Name of the hwmod associated with the RNG module

- reg : Offset and length of the register set for the module

- interrupts : the interrupt number for the RNG module.

		Used for "ti,omap4-rng" and "inside-secure,safexcel-eip76"

- clocks: the trng clock source. Only mandatory for the

  "inside-secure,safexcel-eip76" compatible, the second clock is

  needed for the Armada 7K/8K SoCs

- clock-names: mandatory if there is a second clock, in this case the

  name must be "core" for the first clock and "reg" for the second

  one





Example:

/* AM335x */

rng: rng@48310000 {

	compatible = "ti,omap4-rng";

	ti,hwmods = "rng";

	reg = <0x48310000 0x2000>;

	interrupts = <111>;

};



/* SafeXcel IP-76 */

trng: rng@f2760000 {

	compatible = "inside-secure,safexcel-eip76";

	reg = <0xf2760000 0x7d>;

	interrupts = <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;

	clocks = <&cpm_syscon0 1 25>;

};

Documentation/devicetree/bindings/rng/omap_rng.yaml

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/rng/omap_rng.yaml#

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



title: OMAP SoC and Inside-Secure HWRNG Module



maintainers:

  - Jayesh Choudhary <j-choudhary@ti.com>



properties:

  compatible:

    enum:

      - ti,omap2-rng

      - ti,omap4-rng

      - inside-secure,safexcel-eip76



  ti,hwmods:

    const: rng

    deprecated: true

    description: Name of the hwmod associated with the RNG module



  reg:

    maxItems: 1



  interrupts:

    maxItems: 1



  clocks:

    minItems: 1

    items:

      - description: EIP150 gatable clock

      - description: Main gatable clock



  clock-names:

    minItems: 1

    items:

      - const: core

      - const: reg





allOf:

  - if:

      properties:

        compatible:

          contains:

            enum:

              - ti,omap4-rng

              - inside-secure,safexcel-eip76



    then:

      required:

        - interrupts



  - if:

      properties:

        compatible:

          contains:

            enum:

              - inside-secure,safexcel-eip76



    then:

      required:

        - clocks





required:

  - compatible

  - reg



additionalProperties: false



examples:

  - |

    /* AM335x */

    rng: rng@48310000 {

            compatible = "ti,omap4-rng";

            ti,hwmods = "rng";

            reg = <0x48310000 0x2000>;

            interrupts = <111>;

    };

  - |

    /* SafeXcel IP-76 */

    trng: rng@f2760000 {

            compatible = "inside-secure,safexcel-eip76";

            reg = <0xf2760000 0x7d>;

            interrupts = <0 59 4>;

            clocks = <&cpm_syscon0 1 25>;

    };



...