linux-kernel - Re: [PATCH] ARM: multi_v7_defconfig: Enable USB3503 driver

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Message-ID: <20170928104351.GE6726@otheros>
Date:   Thu, 28 Sep 2017 12:43:51 +0200
From:   Linus Lüssing <linus.luessing@...3.blue>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, Kukjin Kim <kgene@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Tobias Jakobi <tjakobi@...h.uni-bielefeld.de>
Subject: Re: [PATCH] ARM: multi_v7_defconfig: Enable USB3503 driver

Hi Krzysztof,

Thanks for your quick reply!

On Thu, Sep 28, 2017 at 08:21:26AM +0200, Krzysztof Kozlowski wrote:
> [...]
> Anyway please define this as a module (unless it can't... but it
> worked in my case).

In that case you used an initrd, right? I see various cases of USB
built-ins, like CONFIG_USB_STORAGE=y, CONFIG_USB_DWC2=y and so on in
multi_v7_defconfig. So my impression was that multi_v7_defconfig was
supposed to allow booting a rootfs from a USB storage device even
without an initrd.

Let me know if that impression is wrong though, I'll happily resend
(and test) the patch with CONFIG_USB_HSIC_USB3503=m then :-).

Regards, Linus