linux-kernel - Re: [PATCH v1 1/2] dt-bindings: phy: intel-emmc-phy: Add new compatible for LGM eMMC PHY

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Date:   Mon, 19 Aug 2019 14:27:09 -0500
From:   Rob Herring <robh@...nel.org>
To:     "Ramuthevar,Vadivel MuruganX" 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        devicetree@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        cheol.yong.kim@...el.com, qi-ming.wu@...el.com,
        peter.harliman.liem@...el.com
Subject: Re: [PATCH v1 1/2] dt-bindings: phy: intel-emmc-phy: Add new
 compatible for LGM eMMC PHY

On Sun, Aug 18, 2019 at 10:44 PM Ramuthevar,Vadivel MuruganX
<vadivel.muruganx.ramuthevar@...ux.intel.com> wrote:
>
> From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
>
> Add a new compatible to use the host controller driver with the
> eMMC PHY on Intel's Lightning Mountain SoC.
>
> Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
> ---
>  .../bindings/phy/intel-lgm-emmc-phy.yaml           | 70 ++++++++++++++++++++++
>  1 file changed, 70 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/intel-lgm-emmc-phy.yaml
>
> diff --git a/Documentation/devicetree/bindings/phy/intel-lgm-emmc-phy.yaml b/Documentation/devicetree/bindings/phy/intel-lgm-emmc-phy.yaml
> new file mode 100644
> index 000000000000..52156ff091ad
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/intel-lgm-emmc-phy.yaml
> @@ -0,0 +1,70 @@
> +# SPDX-License-Identifier: GPL-2.0

Preference for new bindings is (GPL-2.0-only OR BSD-2-Clause)

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/intel-lgm-emmc-phy.yaml#

Preferred filename is the compatible string (plus .yaml).

> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Intel LGM e-MMC PHY Device Tree Bindings

LGM is what?

> +
> +maintainers:
> +  - Rob Herring <robh+dt@...nel.org>
> +  - Mark Rutland <mark.rutland@....com>

I don't know anything about this h/w. Please put yourself here.

> +
> +intel,syscon:

This will throw an error with 'make dt_binding_check'...

> +   $ref: /schemas/types.yaml#definitions/phandle
> +   description:
> +    - |
> +      e-MMC phy module connected through chiptop. Phandle to a node that can
> +      contain the following properties
> +        * reg, Access the e-MMC, get the base address from syscon.
> +        * reset, reset the e-MMC module.
> +
> +properties:
> +  "#phy-cells":
> +    const: 0
> +
> +  compatible:
> +    const: intel,lgm-emmc-phy
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: e-MMC phy module clock
> +
> +  clock-names:
> +    items:
> +      - const: emmcclk
> +
> +  resets:
> +    maxItems: 1
> +
> +required:
> +  - "#phy-cells"
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - resets
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    sysconf: chiptop@...20000 {
> +        compatible = "intel,chiptop-lgm", "syscon";
> +        reg = <0xe0020000 0x100>;
> +        #reset-cells = <1>;
> +     };
> +
> +  - |

Looks like 1 example to me, not 2.

> +    emmc_phy: emmc_phy {
> +        compatible = "intel,lgm-emmc-phy";
> +        intel,syscon = <&sysconf>;
> +        clocks = <&emmc>;
> +        clock-names = "emmcclk";
> +        #phy-cells = <0>;
> +    };
> +
> +...
> --
> 2.11.0
>