linux-kernel - Re: [PATCH 0/4] bcm2835 SDHOST controller

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Date:	Mon, 29 Feb 2016 11:09:03 +0100
From:	Martin Sperl <martin@...rl.org>
To:	Eric Anholt <eric@...olt.net>
Cc:	linux-rpi-kernel@...ts.infradead.org,
	Mark Rutland <mark.rutland@....com>,
	devicetree@...r.kernel.org,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Florian Fainelli <f.fainelli@...il.com>,
	Pawel Moll <pawel.moll@....com>, linux-mmc@...r.kernel.org,
	linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
	Kumar Gala <galak@...eaurora.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 0/4] bcm2835 SDHOST controller


> On 27.02.2016, at 00:05, Eric Anholt <eric@...olt.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