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Date:   Thu, 14 Jan 2021 19:47:31 -0600
From:   Rob Herring <robh@...nel.org>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     Vinod Koul <vkoul@...nel.org>, Alex Dewar <alex.dewar90@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Yu Chen <chenyu56@...wei.com>, devel@...verdev.osuosl.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/4] phy: phy-hi3670-usb3: move driver from staging
 into phy

On Thu, Jan 14, 2021 at 06:35:44PM +0100, Mauro Carvalho Chehab wrote:
> The phy USB3 driver for Hisilicon 970 (hi3670) is ready
> for mainstream. Mode it from staging into the main driver's
> phy/ directory.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> ---
>  .../bindings/phy/phy-hi3670-usb3.yaml         |  72 ++
>  MAINTAINERS                                   |   9 +-
>  drivers/phy/hisilicon/Kconfig                 |  10 +
>  drivers/phy/hisilicon/Makefile                |   1 +
>  drivers/phy/hisilicon/phy-hi3670-usb3.c       | 668 ++++++++++++++++++
>  drivers/staging/hikey9xx/Kconfig              |  11 -
>  drivers/staging/hikey9xx/Makefile             |   2 -
>  drivers/staging/hikey9xx/phy-hi3670-usb3.c    | 668 ------------------
>  drivers/staging/hikey9xx/phy-hi3670-usb3.yaml |  72 --
>  9 files changed, 759 insertions(+), 754 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/phy/phy-hi3670-usb3.yaml
>  create mode 100644 drivers/phy/hisilicon/phy-hi3670-usb3.c
>  delete mode 100644 drivers/staging/hikey9xx/phy-hi3670-usb3.c
>  delete mode 100644 drivers/staging/hikey9xx/phy-hi3670-usb3.yaml
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-hi3670-usb3.yaml b/Documentation/devicetree/bindings/phy/phy-hi3670-usb3.yaml
> new file mode 100644
> index 000000000000..125a5d6546ae
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-hi3670-usb3.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/hisilicon,hi3670-usb3.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Hisilicon Kirin970 USB PHY
> +
> +maintainers:
> +  - Mauro Carvalho Chehab <mchehab+huawei@...nel.org>

Blank line.

> +description: |+
> +  Bindings for USB3 PHY on HiSilicon Kirin 970.
> +
> +properties:
> +  compatible:
> +    const: hisilicon,hi3670-usb-phy
> +
> +  "#phy-cells":
> +    const: 0
> +
> +  hisilicon,pericrg-syscon:
> +    $ref: '/schemas/types.yaml#/definitions/phandle'
> +    description: phandle of syscon used to control iso refclk.
> +
> +  hisilicon,pctrl-syscon:
> +    $ref: '/schemas/types.yaml#/definitions/phandle'
> +    description: phandle of syscon used to control usb tcxo.
> +
> +  hisilicon,sctrl-syscon:
> +    $ref: '/schemas/types.yaml#/definitions/phandle'
> +    description: phandle of syscon used to control phy deep sleep.
> +
> +  hisilicon,eye-diagram-param:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: Eye diagram for phy.
> +
> +  hisilicon,tx-vboost-lvl:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: TX level vboost for phy.
> +
> +required:
> +  - compatible
> +  - hisilicon,pericrg-syscon
> +  - hisilicon,pctrl-syscon
> +  - hisilicon,sctrl-syscon
> +  - hisilicon,eye-diagram-param
> +  - hisilicon,tx-vboost-lvl
> +  - "#phy-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    bus {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      usb3_otg_bc: usb3_otg_bc@...00000 {
> +        compatible = "syscon", "simple-mfd";
> +        reg = <0x0 0xff200000 0x0 0x1000>;
> +
> +        usb_phy {

Is there a contiguous register region for this sub-block? If so, add 
'reg' even though Linux doesn't need it currently.

> +          compatible = "hisilicon,hi3670-usb-phy";
> +          #phy-cells = <0>;
> +          hisilicon,pericrg-syscon = <&crg_ctrl>;
> +          hisilicon,pctrl-syscon = <&pctrl>;
> +          hisilicon,sctrl-syscon = <&sctrl>;
> +          hisilicon,eye-diagram-param = <0xfdfee4>;
> +          hisilicon,tx-vboost-lvl = <0x5>;
> +        };
> +      };
> +    };

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