I'd like to use OpenWrt on Raspberry pi 4 model B with RTC WatchDog HAT.
I could see the RTC with i2c-detect, but I can't install the kernel module kmod-rtc-ds1307...
root@OpenWrt:~# opkg update && opkg install kmod-rtc-ds1307
Downloading https://downloads.openwrt.org/releases/21.02.3/targets/bcm27xx/bcm2711/packages/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_core
Downloading https://downloads.openwrt.org/releases/21.02.3/targets/bcm27xx/bcm2711/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/base/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_base
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/base/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/luci/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_luci
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/luci/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/packages/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_packages
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/packages/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/routing/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_routing
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/routing/Packages.sig
Signature check passed.
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/telephony/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_telephony
Downloading https://downloads.openwrt.org/releases/21.02.3/packages/aarch64_cortex-a72/telephony/Packages.sig
Signature check passed.
Unknown package 'kmod-rtc-ds1307'.
Collected errors:
* opkg_install_cmd: Cannot install package kmod-rtc-ds1307.
But this package looks available.
Why can't it find this package?