I have a FritzBox 7520 and the xDSL modem is not working with OpenWrt 23.05.4, because of the infamous dc_ep_clk_on failed scenario, when even though the modem reaches vrx518_tc:ptm_showtime_enter: Line[0]: show time enter!! but never gets an IP address.
Based on the previous threads like Avm fb 7530 bridge mode help --> patch needed! - #5 by mojifax.
I have applied the patch of @janh from https://patchwork.ozlabs.org/project/openwrt/patch/20230130224020.473703-1-jan@3e8.eu/.
and the git repo has seemingly the correct status:
HEAD detached at v23.05.4
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git restore <file>..." to discard changes in working directory)
modified: target/linux/ipq40xx/files/arch/arm/boot/dts/qcom-ipq4019-fritzbox-7530.dts
Untracked files:
(use "git add <file>..." to include in what will be committed)
target/linux/ipq40xx/patches-5.15/997-pcie-qcom-host-magic.patch
no changes added to commit (use "git add" and/or "git commit -a")
After compiling the image, the appropriate .o file also seems to have the needed changes:
./build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/openwrt-sdk-23.05.4-ipq40xx-generic_gcc-12.3.0_musl_eabi.Linux-x86_64/staging_dir/toolchain-arm_cortex-a7+neon-vfpv4_gcc-12.3.0_musl_eabi/arm-openwrt-linux-muslgnueabi/bin/objdump -CD ./build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-ipq40xx_generic/linux-5.15.162/drivers/pci/controller/dwc/pcie-qcom.o | grep magic
Disassembly of section .text.unlikely.qcom_pcie_magic_deinit:
00000000 <qcom_pcie_magic_deinit>:
Disassembly of section .ARM.exidx.text.unlikely.qcom_pcie_magic_deinit:
00000000 <.ARM.exidx.text.unlikely.qcom_pcie_magic_deinit>:
Yet after installing the newly built image with sysupgrade -v ...,
there seems to be no change in the observable behaviour.
Most importantly I never see Applying PCIe host magic with logread | grep magic and the dc_ep_clk_on failed remains in dmesg.
My questions so far:
- Is it possible that I have not compiled the image correctly? How do I further verify it?
- Is it possible that after the sysupgrade I still don't have tha patched changes? How do I further verify it?
- Is it possible that the above patch is not for every model?
- Any other ideas what could be the issue?