linux-kernel - RE: [PATCH 1/2] dt-bindings: clock: support i.MX93 Anatop

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Message-ID: <DU0PR04MB9417CD64DDD5238BCBC5B3E588D4A@DU0PR04MB9417.eurprd04.prod.outlook.com>
Date:   Thu, 19 Oct 2023 10:05:54 +0000
From:   Peng Fan <peng.fan@....com>
To:     Conor Dooley <conor@...nel.org>,
        "Peng Fan (OSS)" <peng.fan@....nxp.com>
CC:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "conor+dt@...nel.org" <conor+dt@...nel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "sboyd@...nel.org" <sboyd@...nel.org>,
        "abelvesa@...nel.org" <abelvesa@...nel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "estevam@...il.com" <estevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "inux-clk@...r.kernel.org" <inux-clk@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/2] dt-bindings: clock: support i.MX93 Anatop

> Subject: Re: [PATCH 1/2] dt-bindings: clock: support i.MX93 Anatop
> 
> On Wed, Oct 18, 2023 at 04:44:13PM +0800, Peng Fan (OSS) wrote:
> > From: Peng Fan <peng.fan@....com>
> >
> > Support i.MX93 Anatop which generates PLL and feeds into CCM.
> 
> What is "CCM". How do you "generate" a PLL?

 
CCM: Clock Controller Module.

I may use produces PLL

> 
> > Signed-off-by: Peng Fan <peng.fan@....com>
> > ---
> >  .../bindings/clock/fsl,imx93-anatop.yaml      | 41 +++++++++++++++++++
> >  1 file changed, 41 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/clock/fsl,imx93-anatop.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/clock/fsl,imx93-anatop.yaml
> > b/Documentation/devicetree/bindings/clock/fsl,imx93-anatop.yaml
> > new file mode 100644
> > index 000000000000..9585c9e4ee40
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/clock/fsl,imx93-anatop.yaml
> > @@ -0,0 +1,41 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/clock/fsl,imx93-anatop.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: NXP i.MX93 Anatop Module
> 
> I see there are also "anatop regulators" on some imx SoCs, just calling this
> "anatop module" does not seem sufficiently descriptive.

Analog Module? How do you think?
 
> 
> > +
> > +maintainers:
> > +  - Peng Fan <peng.fan@....com>
> > +
> > +description: |
> 
> Drop the |, you don't need it.

Ok.

> 
> > +  NXP i.MX93 anatop PLL module which generates PLL to CCM root.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - const: fsl,imx93-anatop
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  '#clock-cells':
> > +    const: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - '#clock-cells'
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    anatop: clock-controller@...80000 {
> 
> and the label is is not used, so should be dropped.

Ok.

Thanks,
Peng.

> 
> Thanks,
> Conor.
> 
> > +        compatible = "fsl,imx93-anatop";
> > +        reg = <0x44480000 0x2000>;
> > +        #clock-cells = <1>;
> > +    };
> > +
> > +...
> > --
> > 2.37.1
> >