Re: [linux-sunxi] Re: Requesting help with MMC2 DDR 52 mode clock delays

On 2015-12-11 15:49, Chen-Yu Tsai wrote: > On Fri, Dec 11, 2015 at 10:41 AM, Sugar Wu wrote: >> Hi ChenYu, >> >> I am sorry. >> We just run DDR8 40MHz on A31/A31s with MMC3. >> If you run it with MMC2, it not support DDR8 function. >> You should switch pinmux to MMC3. > >

[linux-sunxi] Re: Requesting help with MMC2 DDR 52 mode clock delays

Hi ChenYu, I am sorry. We just run DDR8 40MHz on A31/A31s with MMC3. If you run it with MMC2, it not support DDR8 function. You should switch pinmux to MMC3. If you want to try DDR 50, you can improve IO voltage to 3v. And, you should set mod clock(in ccmu) and card clock(in mmc

Re: [linux-sunxi] Re: Requesting help with MMC2 DDR 52 mode clock delays

On Fri, Dec 11, 2015 at 10:41 AM, Sugar Wu wrote: > Hi ChenYu, > > I am sorry. > We just run DDR8 40MHz on A31/A31s with MMC3. > If you run it with MMC2, it not support DDR8 function. > You should switch pinmux to MMC3. Interesting. Is this a hardware difference between