linux-kernel - Re: [PATCH 2/3] usb: gadget: aspeed: add ast2600 vhub support

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Date:   Mon, 10 Feb 2020 02:48:17 +0000
From:   Joel Stanley <joel@....id.au>
To:     Tao Ren <rentao.bupt@...il.com>
Cc:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Jeffery <andrew@...id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Colin Ian King <colin.king@...onical.com>,
        Stephen Boyd <swboyd@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, linux-usb@...r.kernel.org,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-aspeed <linux-aspeed@...ts.ozlabs.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>
Subject: Re: [PATCH 2/3] usb: gadget: aspeed: add ast2600 vhub support

On Fri, 31 Jan 2020 at 22:22, <rentao.bupt@...il.com> wrote:
>
> From: Tao Ren <rentao.bupt@...il.com>
>
> Add AST2600 support in aspeed-vhub driver. There are 3 major differences
> between AST2500 and AST2600 vhub:
>   - AST2600 supports 7 downstream ports while AST2500 supports 5.
>   - AST2600 supports 21 generic endpoints while AST2500 supports 15.
>   - EP0 data buffer's 8-byte DMA alignment restriction is removed from
>     AST2600.
>
> Signed-off-by: Tao Ren <rentao.bupt@...il.com>
> Reviewed-by: Andrew Jeffery <andrew@...id.au>

Reviewed-by: Joel Stanley <joel@....id.au>

> ---
>  drivers/usb/gadget/udc/aspeed-vhub/Kconfig | 4 ++--
>  drivers/usb/gadget/udc/aspeed-vhub/core.c  | 9 +++++++++
>  2 files changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/gadget/udc/aspeed-vhub/Kconfig b/drivers/usb/gadget/udc/aspeed-vhub/Kconfig
> index 83ba8a2eb6af..605500b19cf3 100644
> --- a/drivers/usb/gadget/udc/aspeed-vhub/Kconfig
> +++ b/drivers/usb/gadget/udc/aspeed-vhub/Kconfig
> @@ -4,5 +4,5 @@ config USB_ASPEED_VHUB
>         depends on ARCH_ASPEED || COMPILE_TEST
>         depends on USB_LIBCOMPOSITE
>         help
> -         USB peripheral controller for the Aspeed AST2500 family
> -         SoCs supporting the "vHub" functionality and USB2.0
> +         USB peripheral controller for the Aspeed AST2400, AST2500 and
> +         AST2600 family SoCs supporting the "vHub" functionality and USB2.0
> diff --git a/drivers/usb/gadget/udc/aspeed-vhub/core.c b/drivers/usb/gadget/udc/aspeed-vhub/core.c
> index 94081cc04113..c827bf420278 100644
> --- a/drivers/usb/gadget/udc/aspeed-vhub/core.c
> +++ b/drivers/usb/gadget/udc/aspeed-vhub/core.c
> @@ -42,6 +42,11 @@ static const struct ast_vhub_config ast2400_config = {
>         .max_epns = 15,
>  };
>
> +static const struct ast_vhub_config ast2600_config = {
> +       .max_ports = 7,
> +       .max_epns = 21,
> +};
> +
>  static const struct of_device_id ast_vhub_dt_ids[] = {
>         {
>                 .compatible = "aspeed,ast2400-usb-vhub",
> @@ -51,6 +56,10 @@ static const struct of_device_id ast_vhub_dt_ids[] = {
>                 .compatible = "aspeed,ast2500-usb-vhub",
>                 .data = &ast2400_config,
>         },
> +       {
> +               .compatible = "aspeed,ast2600-usb-vhub",
> +               .data = &ast2600_config,
> +       },
>         { }
>  };
>  MODULE_DEVICE_TABLE(of, ast_vhub_dt_ids);
> --
> 2.17.1
>