On Tue, Mar 21, 2017 at 11:36 PM, Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxx> wrote: > This adds almost all operating points allowed for the A33 as defined by > fex files available at: > https://github.com/linux-sunxi/sunxi-boards/tree/master/sys_config/a33 > > There are more possible frequencies in this patch than there are in the > fex files because the fex files only give an interval of possible > frequencies for a given voltage. All supported frequencies are defined > in the original driver code in Allwinner vendor tree. > > There are two missing frequencies though: 1104MHz and 1200MHz which > require the CPU to have 1.32V supplied, which is higher than the default > voltage. > > Without all A33 boards defining the CPU regulator, we cannot have these > two frequencies as it would cause the CPU to try to run a higher > frequency without "overvolting" which is very likely to crash the CPU. > > Therefore, these two frequencies must be enabled on a per-board basis. > > Signed-off-by: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxx> Acked-by: Chen-Yu Tsai <wens@xxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
