Re: [PATCH RFC 12/15] ARM: dts: sun9i: Use sun9i specific mmc compatible
From: Chen-Yu Tsai
Date: Sat Jan 23 2016 - 05:51:27 EST
On Sat, Jan 23, 2016 at 4:44 AM, Maxime Ripard
> On Thu, Jan 21, 2016 at 01:26:39PM +0800, Chen-Yu Tsai wrote:
>> sun9i/A80 MMC controllers have a larger FIFO, and the FIFO DMA
>> trigger levels can be increased. Also, the mmc module clock parent
>> has a higher clock rate, and the sample and output delay phases
>> are different.
>> Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
> Applied, thanks!
> Does that count as a fix, or does the A80 board can safely operate
> without it?
The compatible was added in v4.3, in commit 51424b286067 ("mmc:
sunxi: Fix clk-delay settings").
I've not tested using the old compatibles with 50/52 MHz DDR. They
do work just fine with the transfer modes we already supported.
Either way its been there for a while so i don't see any need to
pick it out as a fix.