Odroid C2 and HC4 soft-reset fix for latest Armbian (24.08)

[Javelin]

Thanks to g4751 for doing the tests for Odroid-HC4. The tests for the Odroid-C2 were performed by myself. Tests were performed on Armbian 24.08 Official releases.

 

Fix is to add a section to the DTB to enable a recently (last year) added kernel driver "meson64-reboot" that is an updated version of the "odroid-reboot" in older kernels.

 

For Odroid-C2:

 

- save your existing DTB

- use DTC to convert DTB->DTS

- modify the DTS with the code below

- use DTC to convert DTS->DTB

- reboot (will fail because new DTB not loaded yet)

- POR (will now load the new DTB)

- log-in

- reboot should now work.

 

 

Quote

Add the following under the stock "gpio-regulator-tf_io {....}":

 

meson64-reboot {
    compatible = "meson64,reboot";
    sys_reset = <0x84000009>;
    sys_poweroff = <0x84000008>;
    sd-vqsw = <0x39 0x03 0x00>;
    sd-vmmc = <0x23 0x57 0x00>;
};

 

 

 For Odroid-HC4:

 

- save your existing DTB

- use DTC to convert DTB->DTS

- modify the DTS with the code below

- use DTC to convert DTS->DTB

- reboot (will fail because new DTB not loaded yet)

- POR (will now load the new DTB)

- log-in

- reboot should now work.

 

 

Quote

Add the following under the stock "gpio-regulator-tf_io {....}":

 

meson64-reboot {
    compatible = "meson64,reboot";
    sys_reset = <0x84000009>;
    sys_poweroff = <0x84000008>;

    sd-vqen = <0x44 0x0e 0x00>;
    sd-vqsw = <0x44 0x06 0x00>;
    sd-vmmc = <0x44 0x03 0x00>;
};

 

 

Notes:

- As far as I know, only the Odroid -C4 has an Armbian patch to do the above automatically for each release.

- For others, updates may overwrite the DTB and you'll need to perform this fix again. In theory, DTB changes are fairly rare.