linux-kernel - Re: [PATCH 2/5] dt-bindings: phy-hisi-inno-usb2: add support for hisi-inno-usb2 phy

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Date:   Thu, 22 Jun 2017 16:23:05 +0800
From:   Jiancheng Xue <xuejiancheng@...ilicon.com>
To:     <robh+dt@...nel.org>, <kishon@...com>, <balbi@...nel.org>
CC:     <yanhaifeng@...ilicon.com>, <hermit.wangheming@...ilicon.com>,
        <gaofei@...ilicon.com>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <project-aspen-dev@...aro.org>
Subject: Re: [PATCH 2/5] dt-bindings: phy-hisi-inno-usb2: add support for
 hisi-inno-usb2 phy

Hi,

On 2017/6/21 17:00, Jiancheng Xue wrote:
> Add support for hisi-inno-usb2 phy.
> 
> Signed-off-by: Jiancheng Xue <xuejiancheng@...ilicon.com>
> ---
>  .../devicetree/bindings/phy/phy-hisi-inno-usb2.txt | 36 ++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt b/Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt
> new file mode 100644
> index 0000000..21f8208
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-hisi-inno-usb2.txt
> @@ -0,0 +1,36 @@
> +HiSilicon INNO USB2 PHY
> +-----------------------
> +Required properties:
> +- compatible: Should be one of the following strings:
> +		"hisilicon,inno-usb2-phy",
> +		"hisilicon,hi3798cv200-usb2-phy",
> +- #phy-cells: Must be 0
> +- hisilicon,peripheral-syscon: Phandle of syscon used to control phy.

Here a property should be added to supply offsets of phy specific registers
in the above peripheral syscon.  I will modify this in the next version.

---
Regards,
Jiancheng

> +- clocks: Phandle and clock specifier pair for reference clock utmi_refclk.
> +- resets: List of phandle and reset specifier pairs for each reset signal in
> +reset-names.
> +- reset-names: Should be "por_rst" and "test_rst". The test_rst only
> +exists in some of SOCs, so it is optional.
> +
> +Phy node can include up to four subnodes. Each subnode represents one port.
> +The required properties of port node are as follows:
> +- clocks: Phandle and clock specifier pair for utmi_clock.
> +- resets: List of phandle and reset specifier pairs for port reset and utmi reset.
> +- reset-names: List of reset signal names. Should be "port_rst" and "utmi_rst"
> +
> +Refer to phy/phy-bindings.txt for the generic PHY binding properties
> +
> +Example:
> +usb_phy: phy {
> +		 compatible = "hisilicon,inno_usb2_phy";
> +		 #phy-cells = <0>;
> +		 hisilicon,peripheral-syscon = <&peri_ctrl>;
> +		 clocks = <&crg USB2_REF_CLK>;
> +		 resets = <&crg 0xb4 2>;
> +		 reset-names = "por_rst";
> +		 port0 {
> +			 clocks = <&crg USB2_UTMI0_CLK>;
> +			 resets = <&crg 0xb4 5>, <&crg 0xb4 1>;
> +			 reset-names = "port_rst", "utmi_rst";
> +		 };
> +	 };
>