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/dev/gpiomem doesn't support GPZ

odroidxu4

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December 6, 20205 yr

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

December 6, 20205 yr

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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>;
};

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