linux-kernel - Re: [PATCH v2 01/10] dt-bindings: phy: Add support for HiSilicon's hi3660 USB PHY

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Date:   Tue, 19 Feb 2019 11:03:25 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Chen Yu <chenyu56@...wei.com>
CC:     Rob Herring <robh@...nel.org>, <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 v2 01/10] dt-bindings: phy: Add support for HiSilicon's
 hi3660 USB PHY

Hi,
On Tue, 2019-02-19 at 09:50 +0800, Chen Yu wrote:
> Hi,
> 
> On 2019/2/19 4:18, Rob Herring wrote:
> > On Mon, Feb 18, 2019 at 07:23:01PM +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
> >> ---
> >> ---
> >>  .../devicetree/bindings/phy/phy-hi3660-usb3.txt     | 21 +++++++++++++++++++++
> >>  1 file changed, 21 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..f9a3d56cfdd2
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/phy/phy-hi3660-usb3.txt
> >> @@ -0,0 +1,21 @@
> >> +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.
> >> +- hisilicon,eye-diagram-param: parameter set for phy
> >> +Refer to phy/phy-bindings.txt for the generic PHY binding properties
> >> +
> >> +Example:
> >> +	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>;
> > 
> > Are most of the registers within one of these blocks? If so, make this 
> > node a child of that node.
> I met a problem when I made this node a child of the syscon node,
> the driver "phy-hi3660-usb3" was not probed.
> Do you have any idea about how to make it probed when it is a child node?
call of_platform_populate() in parent node's driver,
but I don't know whether it's a standard way
> > 
> >> +		hisilicon,eye-diagram-param = <0x22466e4>;
> >> +	};
> >> -- 
> >> 2.15.0-rc2
> >>
> > 
> > .
> > 
> 
> Thanks
> Yu Chen
>