My goal is to get an u-boot -> iPXE over iSCSI booted rock stable Edge-V box using the bare minimum kernel driver and devices by tweaking dtb. ATM I am new in this area and I kindly ask if there are solutions in place to moving forward on this topic.
dmesg --level=err I got a list of kernel errors, some of them are known, other I have no clue:
[ 1.296244] rockchip-pcie f8000000.pcie: PCIe link training gen1 timeout! [ 1.301868] rk-vcodec ff650000.vpu_service: could not find power_model node [ 1.306248] rk-vcodec ff660000.rkvdec: could not find power_model node [ 1.320159] rockchip-pinctrl pinctrl: pin gpio4-19 already requested by fiq-debugger; cannot claim for ff1a0000.serial [ 1.321161] rockchip-pinctrl pinctrl: pin-147 (ff1a0000.serial) status -22 [ 1.321805] rockchip-pinctrl pinctrl: could not request pin 147 (gpio4-19) from group uart2c-xfer on device rockchip-pinctrl [ 1.322854] dw-apb-uart ff1a0000.serial: Error applying setting, reverse things back [ 1.334963] mali ff9a0000.gpu: Failed to get regulator [ 1.335476] mali ff9a0000.gpu: Power control initialization failed [ 1.351364] rk_gmac-dwmac fe300000.ethernet: cannot get clock clk_mac_speed [ 1.502617] rockchip-dwc3 usb0: failed to get drvdata dwc3 [ 1.507810] rockchip-dwc3 usb1: fail to get drvdata hcd [ 1.678978] rk_tsadcv2_temp_to_code: Invalid conversion table: code=1023, temperature=2147483647 [ 1.713427] vccio_sd: unsupportable voltage range: 3300000-3000000uV [ 1.773312] rockchip-dmc dmc: Failed to get leakage [ 1.773849] rockchip-dmc dmc: Failed to get pvtm [ 1.774626] rockchip-dmc dmc: failed to get vop bandwidth to dmc rate [ 1.775477] rockchip-dmc dmc: could not find power_model node [ 1.802071] Error: Driver 'ov4689' is already registered, aborting... [ 1.802933] Error: Driver 'ov13850' is already registered, aborting... [ 1.810216] rockchip-vop ff900000.vop: missing rockchip,grf property [ 1.811775] rockchip-vop ff8f0000.vop: missing rockchip,grf property [ 1.813598] i2c i2c-9: of_i2c: modalias failure on /hdmi@ff940000/ports [ 1.819211] i2c i2c-10: of_i2c: modalias failure on /dp@fec00000/ports [ 2.202559] rk-hdmi-dp-sound hdmi-dp-sound: control 3:0:0:ELD:0 is already present [ 2.207006] hdmi-audio-codec hdmi-audio-codec.7.auto: ASoC: Failed to add ELD: -16 [ 3.813478] cgroup: cgroup2: unknown option "nsdelegate" [ 5.311446] systemd: Failed to start Load Kernel Modules. [ 6.332155] midgard_kbase: exports duplicate symbol _mali_profiling_control (owned by kernel) [ 8.280518] CONFIG-ERROR) dhd_conf_set_intiovar: txbf setting failed -23
Where can I read more about tweaking fenix, u-boot, dtb, … and deep dive into it?