HOWTO: openwrt image for AR150 incl. (new ?) RTC? SOLVED

Technical Support for Routers
1

When trying to build a custom image from src using latest openwrt, I noticed, that

is obsolete:
The photos show a very different module compared to the one, I received.
And I guess, this cmd is also invalid for new type of RTC:
echo ds1307 0x68 > /sys/bus/i2c/devices/i2c-0/new_device
as I could not access the hwclock, dmesg told me:
[ 104.303017] rtc-ds1307: probe of 0-0068 failed with error -5

Finally, in the release notes for 2.27 I found this notice:

New feature: RTC SD2068 driver package <

Please, update the doc for the new version of the RTC, and state:
Which modules, and how to install them are required for the new version of the RTC, when generating custom openwrt image from source ?

2

Please check the new docs here. Then one you posted is old docs and will be removed.

3

Sorry, but in official openwrt distro, there is no option to build kmod-rtc-sd2068. Pls, provide instructions how to patch build procedure. And supply code to openwrt developers for official inclusion.

4

source code is in github

5

To avoid double work, to avoid to develop my private hack to get the new version of the RTC running in official openwrt: Will you provide an official patch to openwrt ? If YES, within which timeframe ?

6

OK. Will upload to openwrt. but I cannot give you timeframe.

7

OK, fixed. It works.

8

Hi! I see it’s an old forum. How is the SD3077 RTC module now, is it working out of the box with the newest OpenWRT 19.7? I couldn’t find any kmod-rtc-sd2068 package…