linux-kernel - Re: [PATCH v3 01/12] dt-bindings: phy: Add support for HiSilicon's hi3660 USB PHY

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Message-ID: <594394e2-c399-39db-979a-fadb17ef28df@huawei.com>
Date:   Wed, 13 Mar 2019 09:40:25 +0800
From:   Chen Yu <chenyu56@...wei.com>
To:     Rob Herring <robh@...nel.org>
CC:     <liuyu712@...ilicon.com>, <linux-usb@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <john.stultz@...aro.org>, <suzhuangluan@...ilicon.com>,
        <kongfei@...ilicon.com>, <wanghu17@...ilicon.com>,
        <butao@...ilicon.com>, <chenyao11@...wei.com>,
        <fangshengzhou@...ilicon.com>, <lipengcheng8@...wei.com>,
        <songxiaowei@...ilicon.com>, <xuyiping@...ilicon.com>,
        <xuyoujun4@...wei.com>, <yudongbin@...ilicon.com>,
        <zangleigang@...ilicon.com>, Mark Rutland <mark.rutland@....com>,
        "Binghui Wang" <wangbinghui@...ilicon.com>
Subject: Re: [PATCH v3 01/12] dt-bindings: phy: Add support for HiSilicon's
 hi3660 USB PHY

Hi Rob,

On 2019/3/12 21:45, Rob Herring wrote:
> On Sat, Mar 02, 2019 at 05:04:54PM +0800, Yu Chen wrote:
>> This patch adds binding documentation for supporting the hi3660 usb
>> phy on boards like the HiKey960.
>>
>> Cc: Rob Herring <robh+dt@...nel.org>
>> Cc: Mark Rutland <mark.rutland@....com>
>> Cc: John Stultz <john.stultz@...aro.org>
>> Cc: Binghui Wang <wangbinghui@...ilicon.com>
>> Signed-off-by: Yu Chen <chenyu56@...wei.com>
>> ---
>> v1:
>> * Fix some format error as suggested by Rob.
>> v2:
>> * Change hi3660 usb PHY to hi3660 USB PHY
>> v3:
>> * Make device node a subnode of usb3_otg_bc register.
>> ---
>> ---
>>  .../devicetree/bindings/phy/phy-hi3660-usb3.txt    | 28 ++++++++++++++++++++++
>>  1 file changed, 28 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
>>
>> diff --git a/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt b/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
>> new file mode 100644
>> index 000000000000..6096214a2bc6
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
>> @@ -0,0 +1,28 @@
>> +Hisilicon hi3660 USB PHY
>> +-----------------------
>> +
>> +Required properties:
>> +- compatible: should be "hisilicon,hi3660-usb-phy"
>> +- #phy-cells: must be 0
>> +- hisilicon,pericrg-syscon: phandle of syscon used to control phy.
>> +- hisilicon,pctrl-syscon: phandle of syscon used to control phy.
>> +- hisilicon,usb3-otg-bc-syscon: phandle of syscon used to control phy.
> 
> You can drop this as it is now just the parent node.
> 
>> +- hisilicon,eye-diagram-param: parameter set for phy
>> +Refer to phy/phy-bindings.txt for the generic PHY binding properties
>> +
>> +This is a subnode of usb3_otg_bc register node.
>> +
>> +Example:
>> +	usb3_otg_bc: usb3_otg_bc@...00000 {
>> +		compatible = "syscon", "simple-mfd";
> 
> This node should have a specific compatible.
> 
Do you mean I need write a specific driver for this node ?

>> +		reg = <0x0 0xff200000 0x0 0x1000>;
>> +
>> +		usb-phy {
>> +			compatible = "hisilicon,hi3660-usb-phy";
>> +			#phy-cells = <0>;
>> +			hisilicon,pericrg-syscon = <&crg_ctrl>;
>> +			hisilicon,pctrl-syscon = <&pctrl>;
>> +			hisilicon,usb3-otg-bc-syscon = <&usb3_otg_bc>;
>> +			hisilicon,eye-diagram-param = <0x22466e4>;
>> +		};
>> +	};
>> -- 
>> 2.15.0-rc2
>>
> 
> .
> 

Thanks
Yu Chen