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Subject: Re: [PATCH 0/4] bcm2835 SDHOST controller
From: Martin Sperl <martin@sperl.org>
In-Reply-To: <1456527942-3045-1-git-send-email-eric@anholt.net>
Date: Mon, 29 Feb 2016 11:09:03 +0100
Cc: linux-rpi-kernel@lists.infradead.org, Mark Rutland <mark.rutland@arm.com>,
        devicetree@vger.kernel.org,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Pawel Moll <pawel.moll@arm.com>, linux-mmc@vger.kernel.org,
        linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
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        Ulf Hansson <ulf.hansson@linaro.org>,
        linux-arm-kernel@lists.infradead.org
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To: Eric Anholt <eric@anholt.net>
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> On 27.02.2016, at 00:05, Eric Anholt <eric@anholt.net> wrote:
> 
> Here's a series to enable the SDHOST controller.  It gives us better
> performance than our old sdhci-bcm2835.c.  The downstream Raspberry Pi
> kernel appears to be using this controller by default at this point.
> 
> I've tried to do some testing on it (mounting filesystem,
> reading/writing files, speed tests), but I'm not sure what a good
> testing regimen for storage drivers would be.
> 
> Eric Anholt (4):
>  dt-bindings: Add binding for brcm,bcm2835-sdhost.
>  mmc: bcm2835-sdhost: Add new driver for the internal SD controller.
>  ARM: bcm2835: Include SDHOST in the device tree.
>  ARM: bcm2835: Enable SDHOST by default.

This patchset misses defconfig changes to enable
the new sdhost driver.

So we end up with a default kernel
without the sdhost driver compiled in
but with sdhost enabled in the default device-tree (patch4)
resulting in a system that does not boot.

Thanks,
	Martin