Solution to stability problems.
I'm almost certain that most stability problem with Wasser's (and not only his) firmware might be connected to degradation of RK3288 SoC. After two years of use I've encountered random hard freezes problem. It began with Wasser's 4.0.6 ROM. My solution was to rise voltage for my SoC. At first I did so only for overclocked frequency setting (1.9GHz) and that turn out to be enough. For my device to work properly at 1.9GHz frequency it needs now at least 1.425V. But after few more months I got simillar "pink" (sometimes green) pixel freezes (that might look different for other). Then I noticed that even after limiting CPU frequency to 1.8GHz it doesn't pass. After some investigation I discovered that for some reason voltage at 1.6GHz is higher than for 1.8GHz CPU frequency. It is only visible after cut of /sys/dvfs/dvfs_tree and watching dmesg output. Settings in DTB for 1.6GHz frequency (and not only that) are overriden by kernel. Right now I've got stable machine again. Mine CPU operation point settings are right now like this:
It was achived with those overclockmatic_RK3288.elf settings:
Because I use such high voltage it might speed up aging problem for RK3288. I was expecting to work with this device at least for one more year. It might not happen 
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Where are new SoC with ARM Cortex A-73 on at least 16nm FF node?
Code:
[12457.011311] | | |- clock: clk_core current: rate 408000, volt = 912500, enable_dvfs = ENABLE [12457.011339] | | |- clk limit(enable):[126000000, 1920000000]; last set rate = 408000 [12457.011356] | | | |- freq = 126000, volt = 850000 [12457.011371] | | | |- freq = 216000, volt = 850000 [12457.011387] | | | |- freq = 408000, volt = 912500 [12457.011402] | | | |- freq = 600000, volt = 962500 [12457.011418] | | | |- freq = 816000, volt = 1062500 [12457.011433] | | | |- freq = 1008000, volt = 1125000 [12457.011449] | | | |- freq = 1200000, volt = 1200000 [12457.011464] | | | |- freq = 1416000, volt = 1275000 [12457.011480] | | | |- freq = 1608000, volt = 1387500 [12457.011496] | | | |- freq = 1800000, volt = 1400000 [12457.011513] | | | |- freq = 1920000, volt = 1425000 [12457.011531] | | |- clock: clk_core current: rate 408000, regu_mode = UNKNOWN, regu_mode_en = 0 [12457.011546] -------------DVFS TREE END------------
Code:
CPU 11 108 900 216 900 408 900 600 900 816 1000 1008 1050 1200 1100 1416 1200 1608 1350 1800 1400 1920 1425
.Where are new SoC with ARM Cortex A-73 on at least 16nm FF node?