On Thu, May 21, 2020 at 11:13:50AM +0200, Lubomir Rintel wrote:
> A conversion of the i2c-pxa binding to DT schema format using json-schema.
>
> This also cleans ups some errors in the binding: The compatible string
> description suggested that "mmp" in "mrvl,mmp-twsi" is to be substituted
> with a processor model, which wouldn't be a right thing to do and indeed
> nobody seems to have been doing that. There also was "Recommended
> properties" section that included optional as well as mandatory
> properties. Missing mandatory properties were added to the example.
>
> Signed-off-by: Lubomir Rintel <lkundrak@xxxxx>
>
> ---
> Changes since v1:
> - Add default GPL-2.0-only license tag
> - Fill in maintainers from MAINTAINERS file
>
> .../devicetree/bindings/i2c/i2c-pxa.txt | 31 --------
> .../devicetree/bindings/i2c/i2c-pxa.yaml | 72 +++++++++++++++++++
> 2 files changed, 72 insertions(+), 31 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-pxa.txt
> create mode 100644 Documentation/devicetree/bindings/i2c/i2c-pxa.yaml
>
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-pxa.txt b/Documentation/devicetree/bindings/i2c/i2c-pxa.txt
> deleted file mode 100644
> index c30783c0eca0..000000000000
> --- a/Documentation/devicetree/bindings/i2c/i2c-pxa.txt
> +++ /dev/null
> @@ -1,31 +0,0 @@
> -* Marvell MMP I2C controller
> -
> -Required properties :
> -
> - - reg : Offset and length of the register set for the device
> - - compatible : should be "mrvl,mmp-twsi" where mmp is the name of a
> - compatible processor, e.g. pxa168, pxa910, mmp2, mmp3.
> - For the pxa2xx/pxa3xx, an additional node "mrvl,pxa-i2c" is required
> - as shown in the example below.
> - For the Armada 3700, the compatible should be "marvell,armada-3700-i2c".
> -
> -Recommended properties :
> -
> - - interrupts : the interrupt number
> - - mrvl,i2c-polling : Disable interrupt of i2c controller. Polling
> - status register of i2c controller instead.
> - - mrvl,i2c-fast-mode : Enable fast mode of i2c controller.
> -
> -Examples:
> - twsi1: i2c@d4011000 {
> - compatible = "mrvl,mmp-twsi";
> - reg = <0xd4011000 0x1000>;
> - interrupts = <7>;
> - mrvl,i2c-fast-mode;
> - };
> -
> - twsi2: i2c@d4025000 {
> - compatible = "mrvl,mmp-twsi";
> - reg = <0xd4025000 0x1000>;
> - interrupts = <58>;
> - };
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-pxa.yaml b/Documentation/devicetree/bindings/i2c/i2c-pxa.yaml
> new file mode 100644
> index 000000000000..19c81972243d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/i2c-pxa.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/i2c/i2c-pxa.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Marvell MMP I2C controller bindings
> +
> +maintainers:
> + - Rob Herring <robh+dt@xxxxxxxxxx>
> +
> +allOf:
> + - $ref: /schemas/i2c/i2c-controller.yaml#
> + - if:
> + not:
> + required:
> + - mrvl,i2c-polling
> + then:
> + required:
> + - interrupts
> +
> +properties:
> + compatible:
> + enum:
> + - mrvl,mmp-twsi
> + - mrvl,pxa-i2c
> + - marvell,armada-3700-i2c
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + minItems: 1
> +
> + resets:
> + minItems: 1
> +
> + mrvl,i2c-polling:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description: |
> + Disable interrupt of i2c controller. Polling status register of i2c
> + controller instead.
> +
> + mrvl,i2c-fast-mode:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description: Enable fast mode of i2c controller.
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - '#address-cells'
> + - '#size-cells'
Add:
unevaluatedProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/marvell,mmp2.h>
> + i2c@d4011000 {
> + compatible = "mrvl,mmp-twsi";
> + reg = <0xd4011000 0x1000>;
> + interrupts = <7>;
> + clocks = <&soc_clocks MMP2_CLK_TWSI1>;
> + mrvl,i2c-fast-mode;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + };
> +
> +...
> --
> 2.26.2
>
