On Mon, Aug 14, 2017 at 1:26 PM, Chen-Yu Tsai <wens@xxxxxxxx> wrote: > On Mon, Aug 14, 2017 at 3:34 PM, Jagan Teki <jagannadh.teki@xxxxxxxxx> wrote: >> On Mon, Aug 14, 2017 at 12:38 PM, Chen-Yu Tsai <wens@xxxxxxxx> wrote: >>> Hi, >>> >>> On Sun, Aug 13, 2017 at 1:54 AM, Jagan Teki <jagannadh.teki@xxxxxxxxx> wrote: >>>> From: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> >>>> >>>> OLimex A64-OLinuXino is an open-source hardware board >>>> using the Allwinner A64 SOC. >>>> >>>> OLimex A64-OLinuXino has >>>> - A64 Quad-core Cortex-A53 64bit >>>> - 1GB or 2GB RAM DDR3L @ 672Mhz >>>> - microSD slot and 4/8/16GB eMMC >>>> - Debug TTL UART >>>> - HDMI >>>> - LCD >>>> - IR receiver >>>> - 5V DC power supply >>> >>> Have you tried out Ethernet? >> >> Not, tested yet. Will send separate patch. > > OK. > > [...] > >>>> + >>>> +®_aldo2 { >>>> + regulator-always-on; >>>> + regulator-min-microvolt = <3300000>; >>>> + regulator-max-microvolt = <3300000>; >>> >>> Schematic says 1.8V? >> >> I saw ALD02 VCC-PL=3.3v on schematic. > > Ah. I see they changed it in a rev. B. Lets use 3.3V then. > >>> >>>> + regulator-name = "vcc-pl"; >>>> +}; >>>> + >>>> +®_aldo3 { >>>> + regulator-always-on; >>>> + regulator-min-microvolt = <3000000>; >>>> + regulator-max-microvolt = <3000000>; >>>> + regulator-name = "vcc-pll-avcc"; >>>> +}; >>>> + >>>> +®_dcdc1 { >>>> + regulator-always-on; >>>> + regulator-min-microvolt = <3300000>; >>>> + regulator-max-microvolt = <3300000>; >>>> + regulator-name = "vcc-3v3"; >>>> +}; >>>> + >>>> +®_dcdc2 { >>>> + regulator-always-on; >>>> + regulator-min-microvolt = <1100000>; >>>> + regulator-max-microvolt = <1100000>; >>> >>> The SoC has a wider range than a fixed voltage for the CPUs. >> >> So, max 1.1v can't enough CPUs? thought similar behavior with pine64? > > The recommended operating conditions says 1.04 ~ 1.3 V for CPUx, > while the typical voltage is 1.1V. The regulator constraints should > match the datasheet, especially for power rails that are involved in > DVFS. power rails from datasheet[1] shows 0.5v ~ 1.3v am I not looking updated details? [1] http://files.pine64.org/doc/datasheet/pine64/AXP803_Datasheet_V1.0.pdf thanks! -- Jagan Teki Free Software Engineer | www.openedev.com U-Boot, Linux | Upstream Maintainer Hyderabad, India. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html