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Date: Tue, 28 May 2024 12:01:34 -0400
From: Frank Li <Frank.li@nxp.com>
To: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	"open list:REAL TIME CLOCK (RTC) SUBSYSTEM" <linux-rtc@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>, imx@lists.linux.dev
Subject: Re: [PATCH 1/1] dt-bindings: rtc: Convert rtc-fsl-ftm-alarm.txt to
 yaml format
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References: <20240520214614.863539-1-Frank.Li@nxp.com>
 <a3c76bd2-f453-4320-8675-66ecb4bc6fc8@kernel.org>
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On Tue, May 21, 2024 at 09:59:00AM +0200, Krzysztof Kozlowski wrote:
> On 20/05/2024 23:46, Frank Li wrote:
> > Convert dt-binding doc "rtc-fsl-ftm-alarm.txt" to yaml format.
> > 
> > Change example's reg to 32bit address and length.
> > Remove unrelated rcpm@1e34040 in example.
> > 
> > Signed-off-by: Frank Li <Frank.Li@nxp.com>
> > ---
> > 
> > Notes:
> >     make dt_binding_check DT_SCHEMA_FILES=rtc-fsl-ftm-alarm.yaml
> >       SCHEMA  Documentation/devicetree/bindings/processed-schema.json
> >       CHKDT   Documentation/devicetree/bindings
> >       LINT    Documentation/devicetree/bindings
> >       DTEX    Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.example.dts
> >       DTC_CHK Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.example.dtb
> > 
> >  .../bindings/rtc/rtc-fsl-ftm-alarm.txt        | 36 -----------
> >  .../bindings/rtc/rtc-fsl-ftm-alarm.yaml       | 61 +++++++++++++++++++
> >  2 files changed, 61 insertions(+), 36 deletions(-)
> >  delete mode 100644 Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.txt
> >  create mode 100644 Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.txt b/Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.txt
> > deleted file mode 100644
> > index fffac74999da6..0000000000000
> > --- a/Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.txt
> > +++ /dev/null
> > @@ -1,36 +0,0 @@
> > -Freescale FlexTimer Module (FTM) Alarm
> > -
> > -Required properties:
> > -- compatible : Should be "fsl,<chip>-ftm-alarm", the
> > -	       supported chips include
> > -	       "fsl,ls1012a-ftm-alarm"
> > -	       "fsl,ls1021a-ftm-alarm"
> > -	       "fsl,ls1028a-ftm-alarm"
> > -	       "fsl,ls1043a-ftm-alarm"
> > -	       "fsl,ls1046a-ftm-alarm"
> > -	       "fsl,ls1088a-ftm-alarm"
> > -	       "fsl,ls208xa-ftm-alarm"
> > -	       "fsl,lx2160a-ftm-alarm"
> > -- reg : Specifies base physical address and size of the register sets for the
> > -  FlexTimer Module.
> > -- interrupts : Should be the FlexTimer Module interrupt.
> > -- fsl,rcpm-wakeup property and rcpm node : Please refer
> > -	Documentation/devicetree/bindings/soc/fsl/rcpm.txt
> > -
> > -Optional properties:
> > -- big-endian: If the host controller is big-endian mode, specify this property.
> > -  The default endian mode is little-endian.
> > -
> > -Example:
> > -rcpm: rcpm@1e34040 {
> > -	compatible = "fsl,ls1088a-rcpm", "fsl,qoriq-rcpm-2.1+";
> > -	reg = <0x0 0x1e34040 0x0 0x18>;
> > -	#fsl,rcpm-wakeup-cells = <6>;
> > -};
> > -
> > -ftm_alarm0: timer@2800000 {
> > -	compatible = "fsl,ls1088a-ftm-alarm";
> > -	reg = <0x0 0x2800000 0x0 0x10000>;
> > -	fsl,rcpm-wakeup = <&rcpm 0x0 0x0 0x0 0x0 0x4000 0x0>;
> > -	interrupts = <0 44 4>;
> > -};
> > diff --git a/Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.yaml b/Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.yaml
> > new file mode 100644
> > index 0000000000000..69b44e9920033
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/rtc/rtc-fsl-ftm-alarm.yaml
> 
> fsl,ls-ftm-alarm.yaml
> 
> or
> 
> fsl,ls1012a-ftm-alarm.yaml
> 
> > @@ -0,0 +1,61 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/rtc/rtc-fsl-ftm-alarm.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Freescale FlexTimer Module (FTM) Alarm
> > +
> > +maintainers:
> > +  - Frank Li <Frank.Li@nxp.com>
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - fsl,ls1012a-ftm-alarm
> > +      - fsl,ls1021a-ftm-alarm
> > +      - fsl,ls1028a-ftm-alarm
> > +      - fsl,ls1043a-ftm-alarm
> > +      - fsl,ls1046a-ftm-alarm
> > +      - fsl,ls1088a-ftm-alarm
> > +      - fsl,ls208xa-ftm-alarm
> > +      - fsl,lx2160a-ftm-alarm
> > +
> > +  reg:
> > +    description:
> > +      Specifies base physical address and size of the register sets for the
> > +      FlexTimer Module.
> 
> Drop description, redundant.
> 
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    description: Should be the FlexTimer Module interrupt.
> 
> Drop description, redundant.
> 
> 
> > +    maxItems: 1
> > +
> > +  fsl,rcpm-wakeup:
> > +    $ref: /schemas/types.yaml#/definitions/phandle-array
> 
> Please describe the items (see syscon-like phandles).
> 
> > +    description:
> > +      phandle to rcpm node, Please refer
> > +      documentation/devicetree/bindings/soc/fsl/rcpm.txt
> > +
> > +  big-endian:
> > +    $ref: /schemas/types.yaml#/definitions/flag
> > +    description:
> > +      If the host controller is big-endian mode, specify this property.
> > +      The default endian mode is little-endian.
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupts
> > +  - fsl,rcpm-wakeup
> > +
> 
> Missing allOf with ref to rtc.yaml.
> 
> > +unevaluatedProperties: false
> 
> becauase otherwise above does not make much sense... unless this is not
> a RTC?

Sorry! which one doesn't make sense? I suppose not "unevaluatedProperties".

Frank

> 
> > +
> > +examples:
> > +  - |
> > +    timer@2800000 {
> 
> timer or rtc?
> 
> > +        compatible = "fsl,ls1088a-ftm-alarm";
> > +        reg = <0x2800000 0x10000>;
> > +        fsl,rcpm-wakeup = <&rcpm 0x0 0x0 0x0 0x0 0x4000 0x0>;
> > +        interrupts = <0 44 4>;
> 
> Include proper header and use defines for GIC and flags.
> 
> > +    };
> 
> Best regards,
> Krzysztof
>