Hi Caleb, On Mon, Dec 5, 2016 at 10:36 PM, Caleb Crome <caleb@xxxxxxxxx> wrote: > Hello, > We have a board here where there is a signal integrity problem on the MMC > bus. It works fine at 25MHz, but does not work in higher speed modes. > > Is there an easy way to disable all the high speed modes? Perhaps from the > device tree? > > I tried searching the archives, but gmane seems to be not working. > > I'm using a stock 4.8.11 kernel. > Host processor is i.MX6 Would max-frequency = <25000000>; do the trick? Please take a look at Documentation/devicetree/bindings/mmc/mmc.txt . -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html