+ Bhaumik On Thu, Oct 07, 2021 at 03:04:44PM +0200, Aleksander Morgado wrote: > Hey all, > > I'm working on a setup using a RPi CM4 based board and a Sierra > Wireless EM9191 module, running OpenWRT 21.02 and backported mhi+wwan > drivers (from latest 5.15 rc). The kernel also has the > mhi_pci_dev_info entry written by Thomas, as per > https://forum.sierrawireless.com/t/sierra-wireless-airprime-em919x-pcie-support/24927 > > The EM9191 is now running 02.08.01.00 (latest firmware from Sierra), > upgraded in several steps back from the original 01.04.01.02 the > module came with. The firmware upgrades were done with > qmi-firmware-update and the module in USB mode in a desktop PC. > > Most of the system boots end up with the mhi driver reporting that the > module firmware crashed in different ways: > > [ 7.060730] mhi-pci-generic 0000:01:00.0: MHI PCI device found: sierra-em919x > [ 7.067906] mhi-pci-generic 0000:01:00.0: BAR 0: assigned [mem > 0x600000000-0x600000fff 64bit] > [ 7.076455] mhi-pci-generic 0000:01:00.0: enabling device (0000 -> 0002) > [ 7.083277] mhi-pci-generic 0000:01:00.0: using shared MSI > [ 7.089508] mhi mhi0: Requested to power ON > [ 7.094080] mhi mhi0: Attempting power on with EE: PASS THROUGH, > state: SYS ERROR > [ 7.180371] mhi mhi0: local ee: INVALID_EE state: RESET device ee: > PASS THROUGH state: SYS ERROR > [ 7.187146] mhi mhi0: Power on setup success > [ 7.187219] mhi mhi0: Handling state transition: PBL > [ 7.189165] mhi mhi0: System error detected > [ 7.189178] mhi mhi0: Device MHI is not in valid state > [ 7.189189] mhi-pci-generic 0000:01:00.0: firmware crashed (7) > [ 7.213682] mhi mhi0: Handling state transition: SYS ERROR > [ 7.219183] mhi mhi0: Transitioning from PM state: Linkdown or > Error Fatal Detect to: SYS ERROR Process > [ 7.228590] mhi-pci-generic 0000:01:00.0: firmware crashed (6) > [ 7.234429] mhi mhi0: Failed to transition from PM state: Linkdown > or Error Fatal Detect to: SYS ERROR Process > [ 7.244433] mhi mhi0: Exiting with PM state: Linkdown or Error > Fatal Detect, MHI state: RESET > [ 7.252963] mhi mhi0: Handling state transition: DISABLE > [ 7.258278] mhi mhi0: Processing disable transition with PM state: > Linkdown or Error Fatal Detect > [ 7.267155] mhi mhi0: Waiting for all pending event ring processing > to complete > [ 7.274480] mhi mhi0: Waiting for all pending threads to complete > [ 7.280576] mhi mhi0: Reset all active channels and remove MHI devices > [ 7.287110] mhi mhi0: Resetting EV CTXT and CMD CTXT > [ 7.292077] mhi mhi0: Exiting with PM state: DISABLE, MHI state: RESET > [ 7.298683] mhi-pci-generic 0000:01:00.0: failed to power up MHI controller > [ 7.306184] mhi-pci-generic: probe of 0000:01:00.0 failed with error -110 > > Some of the boots successfully finish and I can talk to both the QMI > and MBIM ports exposed by the WWAN subsystem, but the success rate is > extremely low. > Can you share the success log also? Thanks, Mani > Thomas, are you seeing similar issues in your setup? > > -- > Aleksander > https://aleksander.es
