Pine Rock 64 - external RTC

[PmaxP]

I'm trying to use an external RTC module (ds3231) in a Pine Rock 64.

I've loaded i2c-dev modules and rtc-ds1307 modules but my rtc mod is not detected by i2c (i2cdetect shows nothing connected at address 68)

Hardware is ok (if I boot with ayurfan distro I can see the external RTC module).

Could it be a kernel configuration problem? Has anyone had similar experience?

Regards

Max

[PmaxP]

if anyone would be interested I managed to make it all work.

- i've modified, recompiled and overwrite to original one (in /boot/dtb) rk3328-rock64.dts, adding this fragment of code

$this->bbcode_second_pass_code('', '
&i2c0 {
status = "okay";
ds1307: ds1307@68 {
compatible = "maxim,ds1307";
reg = <0x68>;
status = "okay";
};
ds3231: ds3231@68 {
compatible = "maxim,ds3231";
reg = <0x68>;
status = "okay";
};
};
')

to enable i2c0 bus and to let automatically discovered the rtc device by the kernel at boot time.

- blacklisted rock64 rtc module (rtc_rk808)

- added rtc_ds1307 module to automatic module loading system


After reboot rtc device will be created and the rtc module enabled

[kterry]

I tried to append your code after generating the dts file but I am getting a syntax error. Do you have any suggestions?