The meta-freescale layer recently upgraded the kirkstone kernel to 5.15.129. This upgrade made it so our IMX8MP-EVK boards no longer boots. The kernel gets stuck in a loop
[ 2.851366] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -517
[ 2.870982] pci 0000:00:00.0: BAR 0: assigned [mem 0x18000000-0x180fffff]
[ 2.877781] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 2.884101] pci 0000:00:00.0: BAR 15: assigned [mem 0x18100000-0x182fffff pref]
[ 2.898985] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 2.910627] pci 0000:00:00.0: BAR 6: assigned [mem 0x18300000-0x1830ffff pref]
[ 2.920487] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 2.925741] pci 0000:01:00.0: BAR 0: assigned [mem 0x18100000-0x181fffff 64bit pref]
[ 2.933582] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 2.940847] pci 0000:01:00.0: BAR 2: assigned [mem 0x18200000-0x182fffff 64bit pref]
[ 2.949080] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 2.957746] pci 0000:00:00.0: PCI bridge to [bus 01-ff]
[ 2.965476] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 2.972734] pci 0000:00:00.0: bridge window [mem 0x18100000-0x182fffff pref]
[ 2.980599] imx-drm display-subsystem: bound imx-lcdifv3-crtc.2 (ops lcdifv3_crtc_ops)
[ 2.988752] pcieport 0000:00:00.0: PME: Signaling with IRQ 251
[ 2.993731] imx_sec_dsim_drv 32e60000.mipi_dsi: version number is 0x1060200
[ 3.029628] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -517
[ 3.029873] mmc1: host does not support reading read-only switch, assuming write-enable
[ 3.041314] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 3.057622] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 3.068101] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 3.078065] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 3.086466] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 3.094449] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 3.102419] imx-drm display-subsystem: bound imx-lcdifv3-crtc.2 (ops lcdifv3_crtc_ops)
[ 3.110421] imx_sec_dsim_drv 32e60000.mipi_dsi: version number is 0x1060200
[ 3.117466] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -517
[ 3.129212] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 3.137513] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 3.147686] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 3.148677] mmc1: new ultra high speed SDR104 SDHC card at address 59b4
[ 3.157681] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 3.164221] mmcblk1: mmc1:59b4 USDU1 29.8 GiB
[ 3.172402] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 3.183818] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 3.183986] mmcblk1: p1 p2 p3 p4
[ 3.191782] imx-drm display-subsystem: bound imx-lcdifv3-crtc.2 (ops lcdifv3_crtc_ops)
[ 3.203119] imx_sec_dsim_drv 32e60000.mipi_dsi: version number is 0x1060200
[ 3.210153] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -517
[ 3.221853] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 3.230132] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 3.241816] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 3.251781] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 3.260580] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 3.268553] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 3.276497] imx-drm display-subsystem: bound imx-lcdifv3-crtc.2 (ops lcdifv3_crtc_ops)
[ 3.284505] imx_sec_dsim_drv 32e60000.mipi_dsi: version number is 0x1060200
[ 3.291510] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -517
[ 3.303193] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 3.311468] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 3.323603] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 3.333899] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 3.342203] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 3.350176] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 3.358162] imx-drm display-subsystem: bound imx-lcdifv3-crtc.2 (ops lcdifv3_crtc_ops)
[ 3.366154] imx_sec_dsim_drv 32e60000.mipi_dsi: version number is 0x1060200
[ 3.373153] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -517
[ 3.384838] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 3.393118] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 3.404284] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 3.414540] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 3.422772] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 3.430742] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 3.438686] imx-drm display-subsystem: bound imx-lcdifv3-crtc.2 (ops lcdifv3_crtc_ops)
[ 3.446685] imx_sec_dsim_drv 32e60000.mipi_dsi: version number is 0x1060200
[ 3.453688] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -517
[ 3.465378] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 3.473656] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 3.483692] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 3.493631] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 3.503062] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 3.511054] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 3.519037] imx-drm display-subsystem: bound imx-lcdifv3-crtc.2 (ops lcdifv3_crtc_ops)
[ 3.527032] imx_sec_dsim_drv 32e60000.mipi_dsi: version number is 0x1060200
[ 3.534030] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -517
[ 3.545708] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 3.553993] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 3.564616] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 3.574884] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 3.583402] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 3.591393] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 3.599346] imx-drm display-subsystem: bound imx-lcdifv3-crtc.2 (ops lcdifv3_crtc_ops)
[ 3.607383] imx_sec_dsim_drv 32e60000.mipi_dsi: version number is 0x1060200
[ 3.614380] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -517
[ 3.626055] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 3.634330] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 3.644984] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 3.655243] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
Checking out an earlier commit on meta-freescale removes the issue.
I don't know if this is the correct place to report issues like this. If not, please advise where I should post it instead.
