linux-kernel - Re: [PATCH v4 06/13] dt-bindings: clock: imx: Add documentation for i.MXRT clock

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Date:   Mon, 6 Dec 2021 21:32:52 -0500
From:   Jesse Taube <mr.bossman075@...il.com>
To:     Stephen Boyd <sboyd@...nel.org>, linux-imx@....com
Cc:     mturquette@...libre.com, robh+dt@...nel.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        ulf.hansson@...aro.org, aisheng.dong@....com, stefan@...er.ch,
        linus.walleij@...aro.org, gregkh@...uxfoundation.org,
        arnd@...db.de, olof@...om.net, soc@...nel.org,
        linux@...linux.org.uk, abel.vesa@....com, adrian.hunter@...el.com,
        jirislaby@...nel.org, giulio.benetti@...ettiengineering.com,
        nobuhiro1.iwamatsu@...hiba.co.jp, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-serial@...r.kernel.org,
        Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v4 06/13] dt-bindings: clock: imx: Add documentation for
 i.MXRT clock



On 12/6/21 17:38, Stephen Boyd wrote:
> Quoting Jesse Taube (2021-12-03 22:10:35)
>> diff --git a/Documentation/devicetree/bindings/clock/imxrt-clock.yaml b/Documentation/devicetree/bindings/clock/imxrt-clock.yaml
>> new file mode 100644
>> index 000000000000..8af48c59ff99
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/imxrt-clock.yaml
>> @@ -0,0 +1,67 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/clock/imxrt-clock.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Clock bindings for Freescale i.MXRT
>> +
>> +maintainers:
>> +  - Giulio Benetti <giulio.benetti@...ettiengineering.com>
>> +  - Jesse Taube <Mr.Bossman075@...il.com>
>> +
>> +description: |
>> +  The clock consumer should specify the desired clock by having the clock
>> +  ID in its "clocks" phandle cell. See include/dt-bindings/clock/imxrt*-clock.h
>> +  for the full list of i.MXRT clock IDs.
>> +
>> +properties:
>> +  compatible:
>> +    const: fsl,imxrt1050-ccm
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  interrupts:
>> +    maxItems: 2
>> +
>> +  clocks:
>> +    minItems: 1
>> +
>> +  clock-names:
>> +    minItems: 1
> 
> Why minitems vs. exactly 1 for osc?
because i don't understand yaml yet.
I'll look into this.

>> +
>> +  '#clock-cells':
>> +    const: 1
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>> +  - clocks
>> +  - clock-names
>> +  - '#clock-cells'
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/imxrt1050-clock.h>
>> +
>> +    ccm@...fc000 {
> 
> s/ccm/clock-controller/

This made my day!

> 
>> +        compatible = "fsl,imxrt1050-ccm";
>> +        reg = <0x400fc000 0x4000>;
>> +        interrupts = <95>, <96>;
>> +        clocks = <&osc>;
>> +        clock-names = "osc";
>> +        #clock-cells = <1>;
>> +    };
>> +
>> +
> 
> Nitpick: Drop extra newline
sorry will fix.
> 
>> +    lpuart1: serial@...84000 {
>> +        compatible = "fsl,imxrt1050-lpuart";
>> +        reg = <0x40184000 0x4000>;
>> +        interrupts = <20>;
>> +        clocks = <&clks IMXRT1050_CLK_LPUART1>;
>> +        clock-names = "ipg";
>> +    };
>> -- 
>> 2.34.0
>>