gpio driver porting from an r-pi3b
#5
gene83, if you're talking about porting hm2_rpspi.c to support the 7i90 you'll need to spend time with the technical reference manual, chapter 20, available here http://opensource.rock-chips.com/wiki_Main_Page - it's the RK3328 TRM link. The rpspi solution bitbangs the hardware directly and requires the standard "spidev" driver is unloaded.

The existing RPi3 hardware addresses and offsets will need to be updated to reflect the RK3328 layout.

Another option to consider is acquiring a 7i92 and connecting via wired ethernet, hm2_eth driver.

Is the 4.11.12-rt15 kernel build available?

All the best, Joe
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Messages In This Thread
gpio driver porting from an r-pi3b - by gene83 - 10-12-2017, 08:12 PM
RE: gpio driver porting from an r-pi3b - by joseph - 10-20-2017, 12:58 PM

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