Hi Matt,
On 09/09/13 14:31, Matt Porter wrote:
On Sun, Sep 08, 2013 at 01:12:26PM +0200, Koen Kooi wrote:
The BeagleBone Black is basically a regular BeagleBone with eMMC and HDMI added,
so create a common dtsi both can use.
IMPORTANT: booting the existing am335x-bone.dts will blow up the HDMI transceiver
after a dozen boots with an uSD card inserted because LDO will be at 3.3V instead
of 1.8.
MMC support for AM335x still isn't in, so only the LDO change has been added.
Signed-off-by: Koen Kooi <koen@xxxxxxxxxxxxxxxxxxxxx>
Tested-by: Matt Porter <matt.porter@xxxxxxxxxx>
Works fine for me on tip and 3.11. I did notice a regression in musb (worked
on 3.11, now failing to probe but this is not related to your new dts as it
happens on am335x-bone.dts too, assuming merge window volatility). One nit,
git-am picked up a whitespace error on that extra line at EOF so you should
trim that out.
Only thing is...for a clear bug like this that will destroy hardware, it
should be marked Cc: stable@xxxxxxxxxxxxxxx to be picked up in stable.
If I've understood Koen correctly then what he's saying is that if you
*were* to use the current (before this patch) am335x-bone.dts on a
Beagle Bone Black (which would be wrong, as that's not the board you
have...) then things would break.
I don't see that this patch fixes that - as far as I can see, even after
the patch, using am335x-bone.dts with a Bone Black will risk the damage?
If so, I don't think this is a 'stable fix' kind of thing, as it doesn't
actually fix the problem?
Koen - is there a way for a booting kernel to detect which board it is
on and avoid any potential damage if someone gives it the wrong DT?
Jonny
-Matt
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