linux-kernel - Re: [PATCH v6 1/2] dt-bindings: phy: intel-emmc-phy: Add YAML schema for LGM eMMC PHY

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Date:   Wed, 30 Oct 2019 11:51:25 +0800
From:   "Ramuthevar, Vadivel MuruganX" 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>
To:     Rob Herring <robh@...nel.org>
Cc:     kishon@...com, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, andriy.shevchenko@...el.com,
        cheol.yong.kim@...el.com, qi-ming.wu@...el.com,
        peter.harliman.liem@...el.com
Subject: Re: [PATCH v6 1/2] dt-bindings: phy: intel-emmc-phy: Add YAML schema
 for LGM eMMC PHY

Hi Rob,

On 29/10/2019 11:48 PM, Rob Herring wrote:
> On Mon, Oct 21, 2019 at 05:54:35PM +0800, Ramuthevar,Vadivel MuruganX wrote:
>> From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
>>
>> Add a YAML schema 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           | 63 ++++++++++++++++++++++
>>   1 file changed, 63 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..bc1285be31f9
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/phy/intel,lgm-emmc-phy.yaml
>> @@ -0,0 +1,63 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/phy/intel,lgm-emmc-phy.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Intel Lightning Mountain(LGM) eMMC PHY Device Tree Bindings
>> +
>> +maintainers:
>> +  - Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
>> +
>> +description: Bindings for eMMC PHY on Intel's Lightning Mountain SoC, syscon
>> +  node is used to reference the base address of eMMC phy registers.
>> +
>> +select:
> You don't need a 'select'.

Thanks for the review.

will remove it.

>> +  properties:
>> +    compatible:
>> +      items:
>> +       - const: intel,lgm-syscon
>> +       - const: intel,lgm-emmc-phy
> This is not right. You are saying 'compatible' must be:
>
> compatible = "intel,lgm-syscon", "intel,lgm-emmc-phy";

Agreed!,   Added like the below statement...

  - compatible:         Should be one of the following:
                                  "intel,lgm-syscon", "syscon"
    - reg:
        maxItems: 1

  properties:
      compatible:
          contains:
             const: intel,lgm-emmc-phy

>> +
>> +    reg:
>> +      maxItems: 1
>> +
>> +  required:
>> +    - compatible
>> +    - reg
>> +
>> +properties:
>> +  "#phy-cells":
>> +    const: 0
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    maxItems: 1
>> +
>> +required:
>> +  - "#phy-cells"
>> +  - compatible
>> +  - reg
>> +  - clocks
>> +  - clock-names
>> +
>> +examples:
>> +  - |
>> +    sysconf: chiptop@...00000 {
>> +      compatible = "intel,lgm-syscon";
>> +      reg = <0xe0200000 0x100>;
>> +
>> +      emmc-phy: emmc-phy {
> phy@a8
add it  in the next patch.
> What else in in the chiptop block?
chiptop don't have other properties except compatible and reg.
---
With Best Regards
Vadivel
>
>> +        compatible = "intel,lgm-emmc-phy";
>> +        reg = <0x00a8 0x10>;
>> +        clocks = <&emmc>;
>> +        clock-names = "emmcclk";
>> +        #phy-cells = <0>;
>> +      };
>> +    };
>> +...
>> -- 
>> 2.11.0
>>