linux-kernel - Re: [PATCH v1 2/2] usb: chipidea: tegra: Select Tegra's PHY in Kconfig

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Message-ID: <20171211100400.GE10671@ulmo>
Date:   Mon, 11 Dec 2017 11:04:00 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Felipe Balbi <balbi@...nel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Peter Chen <Peter.Chen@....com>, linux-usb@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 2/2] usb: chipidea: tegra: Select Tegra's PHY in
 Kconfig

On Mon, Dec 11, 2017 at 02:10:00AM +0300, Dmitry Osipenko wrote:
> UDC driver won't probe without Tegra's PHY, hence select it in the
> Kconfig.
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/usb/chipidea/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
> index 785f0ed037f7..2ef3b27ea72b 100644
> --- a/drivers/usb/chipidea/Kconfig
> +++ b/drivers/usb/chipidea/Kconfig
> @@ -27,6 +27,7 @@ config USB_CHIPIDEA_PCI
>  config USB_CHIPIDEA_UDC
>  	bool "ChipIdea device controller"
>  	depends on USB_GADGET
> +	select USB_TEGRA_PHY if ARCH_TEGRA

This is kind of pointless given that USB_TEGRA_PHY originally was
automatically enabled if ARCH_TEGRA was enabled.

What do we gain by these two patches, other than maybe make the driver
buildable as a module?

Thierry

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