Commit 2f8690ef authored by Kamal Dasu's avatar Kamal Dasu Committed by Ulf Hansson
Browse files

dt-bindings: mmc: Add Broadcom optional sdio_freq clock 



The 72116B0 has improved SDIO controllers that allow the max clock
rate to be increased from a max of 100MHz to a max of 150MHz.
Optional "sdio_freq" clock is used to drive the bus clock if present
optional property "clock-frequency" specifies a base clock frequency
in Hz that overrides the base clock frequency in the CAPS registers.

Signed-off-by: default avatarKamal Dasu <kdasu.kdev@gmail.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220520183108.47358-2-kdasu.kdev@gmail.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 8574adf5

Documentation/devicetree/bindings/mmc/brcm,sdhci-brcmstb.yaml

+26 −6
Original line number Diff line number Diff line
@@ -10,9 +10,6 @@ maintainers: 
  - Al Cooper <alcooperx@gmail.com>

  - Florian Fainelli <f.fainelli@gmail.com>



allOf:

  - $ref: mmc-controller.yaml#



properties:

  compatible:

    oneOf:
@@ -42,23 +39,46 @@ properties: 
    maxItems: 1



  clocks:

    maxItems: 1

    description:

      handle to core clock for the sdhci controller.

    minItems: 1

    items:

      - description: handle to core clock for the sdhci controller

      - description: handle to improved 150Mhz clock for sdhci controller (Optional clock)



  clock-names:

    minItems: 1

    items:

      - const: sw_sdio

      - const: sdio_freq # Optional clock



  clock-frequency:

    description:

      Maximum operating frequency of sdio_freq sdhci controller clock

    $ref: /schemas/types.yaml#/definitions/uint32

    minimum: 100000000

    maximum: 150000000



  sdhci,auto-cmd12:

    type: boolean

    description: Specifies that controller should use auto CMD12



allOf:

  - $ref: mmc-controller.yaml#

  - if:

      properties:

        clock-names:

          contains:

            const: sdio_freq



    then:

      required:

        - clock-frequency



required:

  - compatible

  - reg

  - interrupts

  - clocks

  - clock-names



unevaluatedProperties: false