Commit 6cafcdb1 authored by Olivier Moysan's avatar Olivier Moysan Committed by Jonathan Cameron
Browse files

dt-bindings: iio: adc: stm32-adc: add stm32mp13 compatibles 



Add st,stm32mp13-adc-core and st,stm32mp13-adc compatibles
to support STM32MPU13 SoC.

On STM32MP13x, each ADC peripheral has a single ADC block.
These ADC peripherals, ADC1 and ADC2, are fully independent.

Main characteristics of STM32MP13x ADC:
- One interrupt line per ADC
- 6 to 12 bits resolution
- 19 channels

ADC2 instance supports two extra internal channels VDDCPU and VDDQ_DDR.
Add "vddcpu" and "vddq_ddr" internal channels names to the reserved
labels list.

Signed-off-by: default avatarOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221012142205.13041-3-olivier.moysan@foss.st.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent cd83c5c1

Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml

+65 −3
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ properties: 
      - st,stm32f4-adc-core

      - st,stm32h7-adc-core

      - st,stm32mp1-adc-core

      - st,stm32mp13-adc-core



  reg:

    maxItems: 1
@@ -37,6 +38,7 @@ properties: 
        - stm32f4 and stm32h7 share a common ADC interrupt line.

        - stm32mp1 has two separate interrupt lines, one for each ADC within

          ADC block.

        - stm32mp13 has an interrupt line per ADC block.

    minItems: 1

    maxItems: 2
@@ -180,6 +182,33 @@ allOf: 
          maximum: 36000000

          default: 36000000



  - if:

      properties:

        compatible:

          contains:

            const: st,stm32mp13-adc-core



    then:

      properties:

        clocks:

          minItems: 1

          maxItems: 2



        clock-names:

          items:

            - const: bus

            - const: adc

          minItems: 1



        interrupts:

          items:

            - description: ADC interrupt line



        st,max-clk-rate-hz:

          minimum: 150000

          maximum: 75000000

          default: 75000000



additionalProperties: false



required:
@@ -208,6 +237,7 @@ patternProperties: 
          - st,stm32f4-adc

          - st,stm32h7-adc

          - st,stm32mp1-adc

          - st,stm32mp13-adc



      reg:

        description: |
@@ -229,7 +259,7 @@ patternProperties: 
      interrupts:

        description: |

          IRQ Line for the ADC instance. Valid values are:

            - 0 for adc@0

            - 0 for adc@0 (single adc for stm32mp13)

            - 1 for adc@100

            - 2 for adc@200 (stm32f4 only)

        maxItems: 1
@@ -250,13 +280,14 @@ patternProperties: 
      assigned-resolution-bits:

        description: |

          Resolution (bits) to use for conversions:

            - can be 6, 8, 10 or 12 on stm32f4

            - can be 6, 8, 10 or 12 on stm32f4 and stm32mp13

            - can be 8, 10, 12, 14 or 16 on stm32h7 and stm32mp1



      st,adc-channels:

        description: |

          List of single-ended channels muxed for this ADC. It can have up to:

            - 16 channels, numbered from 0 to 15 (for in0..in15) on stm32f4

            - 19 channels, numbered from 0 to 18 (for in0..in18) on stm32mp13.

            - 20 channels, numbered from 0 to 19 (for in0..in19) on stm32h7 and

              stm32mp1.

        $ref: /schemas/types.yaml#/definitions/uint32-array
@@ -322,7 +353,7 @@ patternProperties: 
          label:

            description: |

              Unique name to identify which channel this is.

              Reserved label names "vddcore", "vrefint" and "vbat"

              Reserved label names "vddcore", "vddcpu", "vddq_ddr", "vrefint" and "vbat"

              are used to identify internal channels with matching names.



          diff-channels:
@@ -419,6 +450,37 @@ patternProperties: 
              items:

                minimum: 40





      - if:

          properties:

            compatible:

              contains:

                const: st,stm32mp13-adc



        then:

          properties:

            reg:

              const: 0x0



            interrupts:

              const: 0



            assigned-resolution-bits:

              enum: [6, 8, 10, 12]

              default: 12



            st,adc-channels:

              minItems: 1

              maxItems: 19

              items:

                minimum: 0

                maximum: 18



            st,min-sample-time-nsecs:

              minItems: 1

              maxItems: 19

              items:

                minimum: 40

    additionalProperties: false



    required: