linux-kernel - Re: [PATCH v2 2/2] dt-bindings: usb: Add bindings doc for Sunplus EHCI driver

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Date:   Sun, 27 Feb 2022 11:53:31 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Vincent Shih <vincent.sunplus@...il.com>,
        gregkh@...uxfoundation.org, stern@...land.harvard.edu,
        p.zabel@...gutronix.de, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, robh+dt@...nel.org,
        devicetree@...r.kernel.org, wells.lu@...plus.com
Subject: Re: [PATCH v2 2/2] dt-bindings: usb: Add bindings doc for Sunplus
 EHCI driver

On 27/02/2022 10:50, Vincent Shih wrote:
> Add bindings doc for Sunplus EHCI driver
> 
> Signed-off-by: Vincent Shih <vincent.sunplus@...il.com>
> ---
>  .../bindings/usb/sunplus,sp7021-usb-ehci.yaml      | 97 ++++++++++++++++++++++
>  MAINTAINERS                                        |  1 +
>  2 files changed, 98 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/sunplus,sp7021-usb-ehci.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/sunplus,sp7021-usb-ehci.yaml b/Documentation/devicetree/bindings/usb/sunplus,sp7021-usb-ehci.yaml
> new file mode 100644
> index 0000000..e492f7a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/sunplus,sp7021-usb-ehci.yaml
> @@ -0,0 +1,97 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) Sunplus Co., Ltd. 2021
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/sunplus,sp7021-usb-ehci.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sunplus SP7021 EHCI Device Tree bindings for ehci0/ehci1
> +
> +maintainers:
> +  - Vincent Shih <vincent.sunplus@...il.com>
> +
> +allOf:
> +  - $ref: usb-hcd.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - sunplus,sp7021-usb-ehci0
> +      - sunplus,sp7021-usb-ehci1

How did you address Rob's comments about using one one compatible? You
still have two.

> +
> +  clocks:
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: usbc_clk
> +      - const: uphy_clk
> +
> +  resets:
> +    maxItems: 2
> +
> +  reset-names:
> +    items:
> +      - const: usbc_rst
> +      - const: uphy_rst
> +
> +  reg:
> +    items:
> +      - description: USBC register region
> +      - description: UPHY register region
> +      - description: MOON4 register region
> +
> +  reg-names:
> +    items:
> +      - const: usbc
> +      - const: uphy
> +      - const: moon4
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  nvmem-cell-names:
> +    description: names corresponding to the nvmem cells of disconnect voltage
> +    const: disc_vol
> +
> +  nvmem-cells:
> +    description: nvmem cell address of disconnect voltage
> +    maxItems: 1
> +
> +  port-num:
> +    description:  identify ehci0 (port0) and ehci1 (port1)

This still should be a dedicated PHY driver referenced here.


Best regards,
Krzysztof