linux-kernel - Re: [PATCH v1 1/2] usb: phy: Add Kconfig entry for Tegra's PHY driver

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Date:   Mon, 11 Dec 2017 11:02:48 +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 1/2] usb: phy: Add Kconfig entry for Tegra's PHY driver

On Mon, Dec 11, 2017 at 02:09:59AM +0300, Dmitry Osipenko wrote:
> Add Kconfig entry so that other drivers other than ehci-tegra
> (like ChipIdea) could add Tegra's PHY to build dependencies.
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/usb/host/Kconfig | 2 +-
>  drivers/usb/phy/Kconfig  | 8 ++++++++
>  drivers/usb/phy/Makefile | 2 +-
>  3 files changed, 10 insertions(+), 2 deletions(-)

I don't think we actually build-depend on the PHY driver from the
ChipIdea driver. In the past, we've refrained from modelling runtime
dependencies using Kconfig because in some cases (such as this) it'll
include more than necessary (ChipIdea will automatically pull in the
USB PHY driver irrespective of whether or not Tegra is enabled).

Thierry

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