On Wed, Dec 18, 2013 at 04:26:50PM -0500, Anson Huang wrote: > on i.MX6Q, cpu freq change need to follow below flows: > > 1. each setpoint has different VDDARM, VDDSOC/PU voltage, get the setpoint > table from dts; > 2. when cpu freq is scaling up, need to increase VDDSOC/PU voltage before > VDDARM, if VDDPU is off, no need to change it; > 3. when cpu freq is scaling down, need to decrease VDDARM voltage before > VDDSOC/PU, if VDDPU is off, no need to change it; > > normally dts will pass vddsoc/pu freq/volt info to kernel, if not, will > use fixed value for vddsoc/pu voltage setting. > > Signed-off-by: Anson Huang <[email protected]>
Acked-by: Shawn Guo <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
