On Wed, Mar 22, 2017 at 11:31:54AM +0800, Chen-Yu Tsai wrote: > 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> Applied, thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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