Re: [PATCH] mfd: RK808: Add register caching

2014-09-17 Thread Lee Jones
On Tue, 09 Sep 2014, Doug Anderson wrote: > Let's define the voltatile registers (those that can't be cached) and > enable caching. The rk808 is accessed almost constantly with cpufreq > so this is really nice. > > As measured by ftrace: > before this change: cpu0_set_target() => ~2200us > a

Re: [PATCH] mfd: RK808: Add register caching

2014-09-10 Thread Chris Zhong
On 09/10/2014 07:06 AM, Doug Anderson wrote: Let's define the voltatile registers (those that can't be cached) and enable caching. The rk808 is accessed almost constantly with cpufreq so this is really nice. As measured by ftrace: before this change: cpu0_set_target() => ~2200us after th

[PATCH] mfd: RK808: Add register caching

2014-09-09 Thread Doug Anderson
Let's define the voltatile registers (those that can't be cached) and enable caching. The rk808 is accessed almost constantly with cpufreq so this is really nice. As measured by ftrace: before this change: cpu0_set_target() => ~2200us after this change: cpu0_set_target() => ~500us Signed-o