Am Sonntag, 18. Februar 2018, 16:43:59 CET schrieb Vicente Bergas: > The vdd_log power supply is controlled by a PWM pin, not by i2c register access. > There is a boot message that reports an error about not being able to bring that supply up. > Also, the eMMC is not detected and /dev/mmcblk2 does not exist. > > References: > [1] > Schematic page 16, search for LOG_DVS_PWM > https://dl.vamrs.com/products/sapphire_excavator/RK_SAPPHIRE_SOCBOARD_RK3399_LPDDR3D178P232SD8_V12_20161109HXS.pdf > (alternate link) > http://opensource.rock-chips.com/images/f/f0/RK_Sapphire_RK3399.rar > > [2] > arch/arm64/boot/dts/rockchip/rk3399-firefly.dts > > Signed-off-by: Vicente Bergas <vicencb at gmail.com> I've adapted the commit message a bit and applied the patch for 4.17 For the emmc, that is a separate issue and you'll need to look at the logs to see if there is anything shown. Especially device-numbering (your mmcblk2) is not guaranteed, so this could very well also be mmcblk0 or mmcblk1 Thanks Heiko
