<djsands>
I am looking into the DRAM initialization of the RK3399 to support a custom board with LPDDR4. I think I am having issues with using a 16-bit bus width (normally looks like a 32-bit width would be used). The DDR controller registers do not seem to be well documented (just a big dump, maybe from a tool). There are a few breadcrumbs in the code, and
<djsands>
maybe I can cross reference some items to a TI part that uses the same or similar controller, but is it likely I would be able to find any complete documentation on these registers anywhere?
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<wens>
upgraded PBP to Armbian 5.15 (edge-rockchip64) kernel, and now I get no display. known issue?
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<Rathann|Mobile>
wens: I have Fedora 35 with kernel 5.15.12 on my PBP, works fine
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<wens>
maybe it's some patch that Armbian has. either way I need to find my console cable
<mps>
wens: PBP is rk3399?
<mps>
I have gru-kevin and 5.15 works fine all time and 5.16-rc4
<wens>
yup
<Net147>
any chance to get u-boot mainline TPL on rk3399 to boot faster? perhaps setting core clocks to full speed?
<wens>
mps: I'm trying not to use my gru-kevin (company asset) to run mainline :p
<Net147>
it feels like booting with rkbin blobs compared to u-boot TPL on rk3399 is about half a second faster
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<mps>
wens: I think PBP and gru-kevin are similar in graphic
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