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Message-ID:
<TYZPR04MB5853A6D387E0BA57F79A2BB7D6462@TYZPR04MB5853.apcprd04.prod.outlook.com>
Date: Wed, 16 Oct 2024 09:38:21 +0000
From: Delphine_CC_Chiu/WYHQ/Wiwynn <Delphine_CC_Chiu@...ynn.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, Delphine_CC_Chiu/WYHQ/Wiwynn
<Delphine_CC_Chiu@...ynn.com>
CC: "patrick@...cx.xyz" <patrick@...cx.xyz>, Pavel Machek <pavel@....cz>, Lee
Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
<krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Nate Case
<ncase@...-inc.com>, Ricky CX Wu <ricky.cx.wu.wiwynn@...il.com>,
"linux-leds@...r.kernel.org" <linux-leds@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v1] dt-bindings: leds: pca955x: Convert text bindings to
YAML
> -----Original Message-----
> From: Krzysztof Kozlowski <krzk@...nel.org>
> Sent: Wednesday, October 16, 2024 3:31 PM
> To: Delphine_CC_Chiu/WYHQ/Wiwynn <Delphine_CC_Chiu@...ynn.com>
> Cc: patrick@...cx.xyz; Pavel Machek <pavel@....cz>; Lee Jones
> <lee@...nel.org>; Rob Herring <robh@...nel.org>; Krzysztof Kozlowski
> <krzk+dt@...nel.org>; Conor Dooley <conor+dt@...nel.org>; Nate Case
> <ncase@...-inc.com>; Ricky CX Wu <ricky.cx.wu.wiwynn@...il.com>;
> linux-leds@...r.kernel.org; devicetree@...r.kernel.org;
> linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v1] dt-bindings: leds: pca955x: Convert text bindings to
> YAML
>
> [External Sender]
>
> [External Sender]
>
> On Wed, Oct 16, 2024 at 01:29:38PM +0800, Delphine CC Chiu wrote:
> > From: Ricky CX Wu <ricky.cx.wu.wiwynn@...il.com>
> >
> > Convert the text bindings of pca955x to YAML so it could be used to
> > validate the DTS.
> >
> > Signed-off-by: Ricky CX Wu <ricky.cx.wu.wiwynn@...il.com>
> > Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>
> > ---
> > .../devicetree/bindings/leds/leds-pca955x.txt | 89 ----------
> > .../devicetree/bindings/leds/nxp,pca955x.yaml | 161 ++++++++++++++++++
> > 2 files changed, 161 insertions(+), 89 deletions(-) delete mode
> > 100644 Documentation/devicetree/bindings/leds/leds-pca955x.txt
> > create mode 100644
> > Documentation/devicetree/bindings/leds/nxp,pca955x.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/leds/leds-pca955x.txt
> > b/Documentation/devicetree/bindings/leds/leds-pca955x.txt
> > deleted file mode 100644
> > index 817f460f3a72..000000000000
> > --- a/Documentation/devicetree/bindings/leds/leds-pca955x.txt
> > +++ /dev/null
> > @@ -1,89 +0,0 @@
> > -* NXP - pca955x LED driver
> > -
> > -The PCA955x family of chips are I2C LED blinkers whose pins not used
> > -to control LEDs can be used as general purpose I/Os. The GPIO pins
> > can -be input or output, and output pins can also be pulse-width controlled.
> > -
> > -Required properties:
> > -- compatible : should be one of :
> > - "nxp,pca9550"
> > - "nxp,pca9551"
> > - "nxp,pca9552"
> > - "ibm,pca9552"
> > - "nxp,pca9553"
> > -- #address-cells: must be 1
> > -- #size-cells: must be 0
> > -- reg: I2C slave address. depends on the model.
> > -
> > -Optional properties:
> > -- gpio-controller: allows pins to be used as GPIOs.
> > -- #gpio-cells: must be 2.
> > -- gpio-line-names: define the names of the GPIO lines
> > -
> > -LED sub-node properties:
> > -- reg : number of LED line.
> > - from 0 to 1 for the pca9550
> > - from 0 to 7 for the pca9551
> > - from 0 to 15 for the pca9552
> > - from 0 to 3 for the pca9553
> > -- type: (optional) either
> > - PCA955X_TYPE_NONE
> > - PCA955X_TYPE_LED
> > - PCA955X_TYPE_GPIO
> > - see dt-bindings/leds/leds-pca955x.h (default to LED)
> > -- label : (optional)
> > - see Documentation/devicetree/bindings/leds/common.txt
> > -- linux,default-trigger : (optional)
> > - see Documentation/devicetree/bindings/leds/common.txt
> > -
> > -Examples:
> > -
> > -pca9552: pca9552@60 {
> > - compatible = "nxp,pca9552";
> > - #address-cells = <1>;
> > - #size-cells = <0>;
> > - reg = <0x60>;
> > -
> > - gpio-controller;
> > - #gpio-cells = <2>;
> > - gpio-line-names = "GPIO12", "GPIO13", "GPIO14", "GPIO15";
> > -
> > - gpio@12 {
> > - reg = <12>;
> > - type = <PCA955X_TYPE_GPIO>;
> > - };
> > - gpio@13 {
> > - reg = <13>;
> > - type = <PCA955X_TYPE_GPIO>;
> > - };
> > - gpio@14 {
> > - reg = <14>;
> > - type = <PCA955X_TYPE_GPIO>;
> > - };
> > - gpio@15 {
> > - reg = <15>;
> > - type = <PCA955X_TYPE_GPIO>;
> > - };
> > -
> > - led@0 {
> > - label = "red:power";
> > - linux,default-trigger = "default-on";
> > - reg = <0>;
> > - type = <PCA955X_TYPE_LED>;
> > - };
> > - led@1 {
> > - label = "green:power";
> > - reg = <1>;
> > - type = <PCA955X_TYPE_LED>;
> > - };
> > - led@2 {
> > - label = "pca9552:yellow";
> > - reg = <2>;
> > - type = <PCA955X_TYPE_LED>;
> > - };
> > - led@3 {
> > - label = "pca9552:white";
> > - reg = <3>;
> > - type = <PCA955X_TYPE_LED>;
> > - };
> > -};
> > diff --git a/Documentation/devicetree/bindings/leds/nxp,pca955x.yaml
> > b/Documentation/devicetree/bindings/leds/nxp,pca955x.yaml
> > new file mode 100644
> > index 000000000000..70f8c1dfa75a
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/leds/nxp,pca955x.yaml
> > @@ -0,0 +1,161 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause %YAML 1.2
> > +---
> > +$id:
> > +https://urldefense.com/v3/__http://devicetree.org/schemas/leds/nxp,pc
> >
> +a955x.yaml*__;Iw!!J63qqgXj!PIbrsq8E67aNk4sJHGvfkCqhXd5PNeLXGzE4uXNe
> V5
> > +8pCETmSSk3Dxy1prR7fHmTRgTTAKMXAxas54MARw$
> > +$schema:
> > +https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.y
> >
> +aml*__;Iw!!J63qqgXj!PIbrsq8E67aNk4sJHGvfkCqhXd5PNeLXGzE4uXNeV58pCE
> TmS
> > +Sk3Dxy1prR7fHmTRgTTAKMXAxagMegPKw$
> > +
> > +title: NXP PCA955X LED controllers
> > +
> > +maintainers:
> > + - Nate Case <ncase@...-inc.com>
> > +
> > +description: |
> > + The PCA955x family of chips are I2C LED blinkers whose pins not
> > +used
> > + to control LEDs can be used as general purpose I/Os. The GPIO pins
> > +can
> > + be input or output, and output pins can also be pulse-width controlled.
> > +
> > + For more product information please see the link below:
> > + -
> > + https://urldefense.com/v3/__https://www.nxp.com/docs/en/data-sheet/P
> > +
> CA9552.pdf__;!!J63qqgXj!PIbrsq8E67aNk4sJHGvfkCqhXd5PNeLXGzE4uXNeV58p
> > + CETmSSk3Dxy1prR7fHmTRgTTAKMXAxbzCK6mRw$
> > +
> > +properties:
> > + compatible:
> > + enum:
> > + - nxp,pca9550
> > + - nxp,pca9551
> > + - nxp,pca9552
> > + - ibm,pca9552
> > + - nxp,pca9553
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + "#address-cells":
> > + const: 1
> > +
> > + "#size-cells":
> > + const: 0
> > +
> > + gpio-controller: true
> > +
> > + gpio-line-names:
> > + minItems: 1
> > + maxItems: 16
> > +
> > + '#gpio-cells':
>
> Keep consistent quotes: " or '
>
Updated in v2.
> > + const: 2
> > +
> > +patternProperties:
> > + "^led@[0-9a-f]+$":
>
> max is 15 leds, so f, thus '+' is not needed. Same in other places.
>
Updated in v2.
> > + type: object
> > + $ref: common.yaml#
> > + unevaluatedProperties: false
> > +
> > + properties:
> > + reg:
> > + minimum: 0
>
> drop minimum, but instead maxItems: 1
>
Updated in v2.
>
> > + type:
> > + description: |
> > + Output configuration, see
> include/dt-bindings/leds/leds-pca955x.h
> > + $ref: /schemas/types.yaml#/definitions/uint32
> > + default: 0
> > + minimum: 0
> > + maximum: 4
>
> I see defines up to 2, not 4. Any changes in binding should be explained in
> commit msg.
Checked the leds-pca955x.h and set it to 2 in v2.
>
>
> > +
> > + required:
> > + - reg
> > +
> > +allOf:
> > + - if:
> > + properties:
> > + compatible:
> > + contains:
> > + enum:
> > + - nxp,pca9550
> > + then:
> > + patternProperties:
> > + "^led@[0-9a-f]+$":
> > + properties:
> > + reg:
> > + maximum: 1
> > + else:
> > + if:
> > + properties:
> > + compatible:
> > + contains:
> > + enum:
> > + - nxp,pca9551
> > + then:
> > + patternProperties:
> > + "^led@[0-9a-f]+$":
> > + properties:
> > + reg:
> > + maximum: 7
> > + else:
> > + if:
> > + properties:
> > + compatible:
> > + contains:
> > + enum:
> > + - nxp,pca9552
> > + - ibm,pca9552
> > + then:
> > + patternProperties:
> > + "^led@[0-9a-f]+$":
> > + properties:
> > + reg:
> > + maximum: 15
> > + else:
> > + if:
>
> Do not nest else:if. It's not manageable. See other bindings...
>
Updated in v2, Thanks.
> > + properties:
> > + compatible:
> > + contains:
> > + enum:
> > + - nxp,pca9553
> > + then:
> > + patternProperties:
> > + "^led@[0-9a-f]+$":
> > + properties:
> > + reg:
> > + maximum: 3
> > +
> > +additionalProperties: false
>
> Best regards,
> Krzysztof
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