linux-kernel - Re: [PATCH v2] dt-bindings: rtc: zynqmp: convert bindings to YAML

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Message-ID: <20210610172141.GA1972573@robh.at.kernel.org>
Date:   Thu, 10 Jun 2021 12:21:41 -0500
From:   Rob Herring <robh@...nel.org>
To:     Nobuhiro Iwamatsu <iwamatsu@...auri.org>
Cc:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Michal Simek <michal.simek@...inx.com>,
        linux-rtc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] dt-bindings: rtc: zynqmp: convert bindings to YAML

On Wed, Jun 02, 2021 at 09:09:18AM +0900, Nobuhiro Iwamatsu wrote:
> Convert Real Time Clock for Xilinx Zynq MPSoC SoC bindings documentation
> to YAML schemas.
> And this renamed the file to compatible string of DT.
> 
> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@...auri.org>
> ---
> 
> v2: Fix warning with DT_CHECKER_FLAGS=-m
> 
>  .../bindings/rtc/xlnx,zynqmp-rtc.yaml         | 61 +++++++++++++++++++
>  .../devicetree/bindings/rtc/xlnx-rtc.txt      | 25 --------
>  2 files changed, 61 insertions(+), 25 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
>  delete mode 100644 Documentation/devicetree/bindings/rtc/xlnx-rtc.txt
> 
> diff --git a/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
> new file mode 100644
> index 00000000000000..c205cb86ef00be
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
> @@ -0,0 +1,61 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/rtc/xlnx,zynqmp-rtc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Xilinx Zynq Ultrascale+ MPSoC Real Time Clock
> +
> +description: |

Don't need '|'

> +  RTC controller for the Xilinx Zynq MPSoC Real Time Clock.
> +  This separates IRQ lines for seconds and alarm.

The RTC controller has separate IRQ...

> +
> +maintainers:
> +  - Michal Simek <michal.simek@...inx.com>
> +
> +allOf:
> +  - $ref: rtc.yaml#
> +
> +properties:
> +  compatible:
> +    const: xlnx,zynqmp-rtc
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    minItems: 2
> +
> +  interrupt-names:
> +    items:
> +      - const: alarm
> +      - const: sec
> +
> +  calibration:
> +    description: |
> +      calibration value for 1 sec period which will
> +      be programmed directly to calibration register.

Needs a type $ref.

> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - interrupt-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      rtc: rtc@...60000 {
> +        compatible = "xlnx,zynqmp-rtc";
> +        reg = <0x0 0xffa60000 0x0 0x100>;
> +        interrupt-parent = <&gic>;
> +        interrupts = <0 26 4>, <0 27 4>;
> +        interrupt-names = "alarm", "sec";
> +        calibration = <0x198233>;
> +      };
> +    };