Commit 7e5d4236 authored by Wolfram Sang's avatar Wolfram Sang
Browse files

Merge tag 'i2c-host-6.9-part2' of... 

Merge tag 'i2c-host-6.9-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow

Théo adds support for the Mobileye EyeQ5-I2C in the bindings.
This patch is followed by eight commits featuring improvements to
the Nomadik controller, such as simplification of the IRQ logic,
renaming of the private data structure, more efficient use of
FIELD_PREP/GET, GENMASK, etc., better time measurement with
ktime, and more.
parents a4145ce1 bb271301

Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml

+43 −6
Original line number Diff line number Diff line
@@ -14,9 +14,6 @@ description: The Nomadik I2C host controller began its life in the ST 
maintainers:

  - Linus Walleij <linus.walleij@linaro.org>



allOf:

  - $ref: /schemas/i2c/i2c-controller.yaml#



# Need a custom select here or 'arm,primecell' will match on lots of nodes

select:

  properties:
@@ -24,21 +21,23 @@ select: 
      contains:

        enum:

          - st,nomadik-i2c

          - mobileye,eyeq5-i2c

  required:

    - compatible



properties:

  compatible:

    oneOf:

      # The variant found in STn8815

      - items:

          - const: st,nomadik-i2c

          - const: arm,primecell

      # The variant found in DB8500

      - items:

          - const: stericsson,db8500-i2c

          - const: st,nomadik-i2c

          - const: arm,primecell

      - items:

          - const: mobileye,eyeq5-i2c

          - const: arm,primecell



  reg:

    maxItems: 1
@@ -55,7 +54,7 @@ properties: 
      - items:

          - const: mclk

          - const: apb_pclk

      # Clock name in DB8500

      # Clock name in DB8500 or EyeQ5

      - items:

          - const: i2cclk

          - const: apb_pclk
@@ -70,6 +69,16 @@ properties: 
    minimum: 1

    maximum: 400000



  mobileye,olb:

    $ref: /schemas/types.yaml#/definitions/phandle-array

    items:

      - items:

          - description: Phandle to OLB system controller node.

          - description: Platform-wide controller ID (integer starting from zero).

    description:

      The phandle pointing to OLB system controller node, with the I2C

      controller index.



required:

  - compatible

  - reg
@@ -79,6 +88,20 @@ required: 


unevaluatedProperties: false



allOf:

  - $ref: /schemas/i2c/i2c-controller.yaml#

  - if:

      properties:

        compatible:

          contains:

            const: mobileye,eyeq5-i2c

    then:

      required:

        - mobileye,olb

    else:

      properties:

        mobileye,olb: false



examples:

  - |

    #include <dt-bindings/interrupt-controller/irq.h>
@@ -111,5 +134,19 @@ examples: 
      clocks = <&i2c0clk>, <&pclki2c0>;

      clock-names = "mclk", "apb_pclk";

    };

  - |

    #include <dt-bindings/interrupt-controller/mips-gic.h>

    i2c@300000 {

      compatible = "mobileye,eyeq5-i2c", "arm,primecell";

      reg = <0x300000 0x1000>;

      interrupt-parent = <&gic>;

      interrupts = <GIC_SHARED 1 IRQ_TYPE_LEVEL_HIGH>;

      clock-frequency = <400000>;

      #address-cells = <1>;

      #size-cells = <0>;

      clocks = <&i2c_ser_clk>, <&i2c_clk>;

      clock-names = "i2cclk", "apb_pclk";

      mobileye,olb = <&olb 0>;

    };



...

drivers/i2c/busses/i2c-nomadik.c

+432 −308

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