| Message ID | 1452252698-16765-3-git-send-email-zhengxing@rock-chips.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Xing, Am Freitag, 8. Januar 2016, 19:31:38 schrieb Xing Zheng: > Actually, we need more cpu freqs which are 50MHz integer multiples. > > Signed-off-by: Xing Zheng <zhengxing@rock-chips.com> > --- > > arch/arm/boot/dts/rk3036.dtsi | 13 ++++++++++++- > 1 file changed, 12 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/rk3036.dtsi b/arch/arm/boot/dts/rk3036.dtsi > index 1cb5877..1a773eb 100644 > --- a/arch/arm/boot/dts/rk3036.dtsi > +++ b/arch/arm/boot/dts/rk3036.dtsi > @@ -79,7 +79,18 @@ > resets = <&cru SRST_CORE0>; > operating-points = < > /* KHz uV */ > - 816000 1000000 > + 1200000 1200000 > + 1100000 1200000 > + 1000000 1200000 > + 900000 1200000 > + 800000 1200000 > + 700000 1200000 > + 600000 1200000 > + 500000 1200000 > + 400000 1200000 > + 300000 1200000 > + 200000 1200000 > + 100000 1200000 what about reducing the voltage as well? From rk3288-specific discussions I remember that reducing the frequency without touching the voltage, didn't really save so much energy. And it looks like it was running 816MHz@1.0V just fine as well. I guess you should find out which voltages are really necessary for each step. Heiko
Hi Heiko, On 2016?01?09? 03:16, Heiko Stuebner wrote: > Hi Xing, > > Am Freitag, 8. Januar 2016, 19:31:38 schrieb Xing Zheng: >> Actually, we need more cpu freqs which are 50MHz integer multiples. >> >> Signed-off-by: Xing Zheng <zhengxing@rock-chips.com> >> --- >> >> arch/arm/boot/dts/rk3036.dtsi | 13 ++++++++++++- >> 1 file changed, 12 insertions(+), 1 deletion(-) >> >> diff --git a/arch/arm/boot/dts/rk3036.dtsi b/arch/arm/boot/dts/rk3036.dtsi >> index 1cb5877..1a773eb 100644 >> --- a/arch/arm/boot/dts/rk3036.dtsi >> +++ b/arch/arm/boot/dts/rk3036.dtsi >> @@ -79,7 +79,18 @@ >> resets = <&cru SRST_CORE0>; >> operating-points = < >> /* KHz uV */ >> - 816000 1000000 >> + 1200000 1200000 >> + 1100000 1200000 >> + 1000000 1200000 >> + 900000 1200000 >> + 800000 1200000 >> + 700000 1200000 >> + 600000 1200000 >> + 500000 1200000 >> + 400000 1200000 >> + 300000 1200000 >> + 200000 1200000 >> + 100000 1200000 > what about reducing the voltage as well? > > >From rk3288-specific discussions I remember that reducing the frequency > without touching the voltage, didn't really save so much energy. > And it looks like it was running 816MHz@1.0V just fine as well. > > I guess you should find out which voltages are really necessary for each > step. > > > Heiko > Thank you for your comments. :-) Yes, these patches currently still in draft stage. Modify the frequency of 816MHz is for mac apll patch can be FROMLIST for Kylin Board, and will work cpu frequency table as a start. We know you want to set the appropriate frequency of different batches of The RK3036 SoCs take some time,so I just tested a fixed high voltage 1.2v on my evb board, the frequency of the voltage to ensure that we can work needed. We'll start work dynamically adjust the voltage. Thanks. - Xing Zheng
diff --git a/arch/arm/boot/dts/rk3036.dtsi b/arch/arm/boot/dts/rk3036.dtsi index 1cb5877..1a773eb 100644 --- a/arch/arm/boot/dts/rk3036.dtsi +++ b/arch/arm/boot/dts/rk3036.dtsi @@ -79,7 +79,18 @@ resets = <&cru SRST_CORE0>; operating-points = < /* KHz uV */ - 816000 1000000 + 1200000 1200000 + 1100000 1200000 + 1000000 1200000 + 900000 1200000 + 800000 1200000 + 700000 1200000 + 600000 1200000 + 500000 1200000 + 400000 1200000 + 300000 1200000 + 200000 1200000 + 100000 1200000 >; clock-latency = <40000>; clocks = <&cru ARMCLK>;
Actually, we need more cpu freqs which are 50MHz integer multiples. Signed-off-by: Xing Zheng <zhengxing@rock-chips.com> --- arch/arm/boot/dts/rk3036.dtsi | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)