On Mon, Dec 19, 2016 at 01:50:04AM +0000, Andre Przywara wrote: > From: Philipp Tomsich <philipp.toms...@theobroma-systems.com> > > So far the MBUS priority setup was done by writing "magic" values taken > from a DRAM controller register dump after a boot0 run. > By peeking at the Linux (sic!) MBUS driver [1] from the Allwinner BSP > kernel, we learned more about the actual meaning of those bits. > Add macros and refactor the setup function to make the MBUS setup much > more readable and meaningful. > The actual values used now are a transformation of the values used > before, which are assembled by the new code to result in the same register > writes. So this rework does not change any settings, also the code size > stays the same. > > The respective source files in the BSP kernel had a proper GPL header, > so lifting this code and information into U-Boot is legal. > > [Andre: provide a convenience macro to fit definitions on one line] > > [1] > https://github.com/longsleep/linux-pine64/blob/lichee-dev-v3.10.65/drivers/bus/sunxi_mbus.c > > Signed-off-by: Philipp Tomsich <philipp.toms...@theobroma-systems.com> > Signed-off-by: Andre Przywara <andre.przyw...@arm.com>
Nice cleanup! Acked-by: Maxime Ripard <maxime.rip...@free-electrons.com> Thanks, Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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