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jbuzar

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Posts posted by jbuzar

  1. No, I do not see any limit in user space. cpufreq-info shows "hardware limits: 408 MHz - 1.42 GHz" for CPU 0-3 and "hardware limits: 408 MHz - 1.80 GHz" for CPU 4 and 5.

    Highest entries in dts are opp-1512000000 and opp-1992000000.  Maybe there is a setting somewhere that excludes them, but I do not see it.
     

     

  2. I just see that the rk3399 datasheet states 1.8 and 1.4GHz as the maximum CPU frequencies. I thought it was 2 and 1.5 like advertised with the rk3399 boards. In this case I agree the stable kernel should limit it to the values from the datasheet.  Still I use active cooling and constant 2GHz works fine since weeks. I will switch the drivers/clk/rockchip/clk-rk3299.c file with the one from the dev kernel and that should probably give me back the 2GHz.

  3. With the stable images for NanoPi M4 I see CPU speed is limited to 1.8Mhz, whereas with nightly builds I get up to 2GHz for the fast cores. I would rather like to stay with stable image, also because boot time is much longer with nightly builds. What is the easiest way to enable up to 2GHz CPU speeds with stable build?

    JB

  4. I have problem getting SPI work on Orange Pi Zero nightly build Armbian_5.26.170213_Orangepizero_Ubuntu_xenial_dev_4.10.0.7z.

    I decompiled sun8i-h2plus-orangepi-zero.dtd, changed status of spi1 from "disabled" to "okay", disabled UART3 and  led_pins@0 as they share pins, compiled dtb and copied to /boot/dtb. After reboot I did "modprobe spidev" and I still do not see any spi devices in /dev.

    Do I do something wrong or is there something different in kernel 4.10.0?

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