sgjava Posted December 6, 2020 Share Posted December 6, 2020 So I tried switching my MMIO GPIO to /dev/gpiomem from /dev/mem and it doesn't appear to support the GPZ block https://wiki.odroid.com/odroid-xu4/hardware/expansion_connectors#con_11_-_2x6_pins The address is 0x03860000. Hard Kernel's wiringPi doesn't seem to support this either. Should this be a question I ask Hard Kernel folks? https://wiki.odroid.com/odroid-xu4/software/gpio_register_map 0 Quote Link to comment Share on other sites More sharing options...
sgjava Posted December 6, 2020 Author Share Posted December 6, 2020 OK, 0x03860000 looks to be missing from DT, so I'll test adding it. gpiomem { compatible = "samsung,exynos-gpiomem"; status = "okay"; reg = <0x13400000 0x1000 0x14010000 0x1000>; }; 0 Quote Link to comment Share on other sites More sharing options...
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