Hi, On 02/06/2017 08:24 AM, Lukasz Majewski wrote: > Hi Dave, > >> On 02/03/2017 09:24 AM, Lukasz Majewski wrote: >>> The "opp_high" property brings support for 1.5 GHz CPU frequency >>> for TI's am57xx line of processors. >>> >>> Signed-off-by: Lukasz Majewski <lukma@xxxxxxx> >>> --- >>> arch/arm/boot/dts/dra7.dtsi | 5 +++++ >>> 1 file changed, 5 insertions(+) >>> >> >> This can't be blindly enabled for all am57xx SoCs, there is a >> forthcoming ti-cpufreq [1] driver that is needed that will decided >> which OPPs can and cannot be enabled for the specific variant in use. > > Do you know if there is ongoing work on using Avs0 voltage (encoded in > efuse) to control the per SoC PMIC voltage value when switching to > opp_high (1.5 GHz)? Yes, Viresh Kumar introduced multi-regulator support in the OPP core recently [1] which I wrote a test driver for here [2] which hooks into the OPP framework to do both ABB regulator scaling and also programs the AVS0 voltages. The current implementation I have cleaned up will depend on the ti-cpufreq driver so once that is merged I will send the AVS0 and ABB support driver upstream as well. If you are curious you can look at current internal implementation here [3]. Regards, Dave [1] http://www.spinics.net/lists/devicetree/msg153212.html [2] https://www.spinics.net/lists/kernel/msg2384336.html [3] http://git.ti.com/ti-linux-kernel/ti-linux-kernel/blobs/ti-lsk-linux-4.9.y/drivers/base/power/opp/ti-opp-supply.c > > >> >> Regards, >> Dave >> >> [1] http://www.spinics.net/lists/devicetree/msg158967.html >> >>> diff --git a/arch/arm/boot/dts/dra7.dtsi >>> b/arch/arm/boot/dts/dra7.dtsi index a860a56..5e678cd 100644 >>> --- a/arch/arm/boot/dts/dra7.dtsi >>> +++ b/arch/arm/boot/dts/dra7.dtsi >>> @@ -108,6 +108,11 @@ >>> opp-hz = /bits/ 64 <1176000000>; >>> opp-microvolt = <1160000 885000 1160000>; >>> }; >>> + >>> + opp_high@1500000000 { >>> + opp-hz = /bits/ 64 <1500000000>; >>> + opp-microvolt = <1210000 950000 1250000>; >>> + }; >>> }; >>> >>> /* >>> >> > > > > > Best regards, > > Lukasz Majewski > > -- > > DENX Software Engineering GmbH, Managing Director: Wolfgang Denk > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@xxxxxxx > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
