mmc0: Tuning failed on LS1046ARDB

[prafulls]

Hi Team,

    We were facing the mmc mount issue while bootup in LS1046ARDB. This issue come in between multiple reboot.  Please fine below console logs for the same & please do suggest the appropriate action/solution required for this.

0482 [ 3.556800] Freescale USDPAA process driver
90483 [ 3.560977] fsl-usdpaa: no region found
90484 [ 3.564823] Freescale USDPAA process IRQ driver
90485 [ 3.581027] optee: probing for conduit method from DT.
90486 [ 3.587919] optee: api uid mismatch
90487 [ 3.592338] mmc0: Tuning failed, falling back to fixed sampling clock
90488 [ 3.595073] u32 classifier
90489 [ 3.595074] Actions configured
90490 [ 3.595964] Initializing XFRM netlink socket
90491 [ 3.596268] NET: Registered protocol family 10
90492 [ 3.596820] Segment Routing with IPv6
90493 [ 3.596874] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
90494 [ 3.597169] NET: Registered protocol family 17
90495 [ 3.597181] NET: Registered protocol family 15
90496 [ 3.597209] Bridge firewalling registered
90497 [ 3.597275] 8021q: 802.1Q VLAN Support v1.8
90498 [ 3.597358] 9pnet: Installing 9P2000 support
90499 [ 3.597385] tsn generic netlink module v1 init...
90500 [ 3.597418] Key type dns_resolver registered
90501 [ 3.597893] registered taskstats version 1
90502 [ 3.598696] Btrfs loaded, crc32c=crc32c-generic
90503 [ 3.600499] iommu: Adding device 2c00000.edma to group 7
90504 [ 3.607323] i2c i2c-1: using dma0chan16 (tx) and dma0chan17 (rx) for DMA transfers
90505 [ 3.607326] i2c i2c-1: IMX I2C adapter registered
90506 [ 3.607410] iommu: Adding device 0000:00:00.0 to group 8
90507 [ 3.607638] pcieport 0000:00:00.0: Signaling PME with IRQ 67
90508 [ 3.607721] iommu: Adding device 0000:01:00.0 to group 8
90509 [ 3.607976] mhi 0000:01:00.0: BAR 0: assigned [mem 0x5040000000-0x5040000fff 64bit]
90510 [ 3.608279] [I][mhi_async_power_up] Requested to power on
90511 [ 3.609173] [I][mhi_async_power_up] Power on setup success
90512 [ 3.609186] [I][mhi_pci_probe] Return successful
90513 [ 3.609217] [I][mhi_fw_load_worker] Waiting for device to enter PBL from EE:INVALID_EE
90514 [ 3.609227] [I][mhi_pm_st_worker] Transition to state:PBL
90515 [ 3.609236] [I][mhi_fw_load_worker] Device current EE:PBL
90516 [ 3.609275] mhi 0000:01:00.0: Direct firmware load for fsm100xx/sbl1.mbn failed with error -2
90517 [ 3.609279] [E][mhi_fw_load_worker] Error loading firmware, ret:-2
90518 [ 3.609285] [I][mhi_runtime_idle] Entered returning -EBUSY
90519 [ 3.609742] input: gpio-keys as /devices/platform/gpio-keys/input/input0
90520 [ 3.609907] hctosys: unable to open rtc device (rtc0)
90521 [ 3.769468] mmc0: Hold on to use fixed sampling clock. Try SW tuning!
90522 [ 3.776330] VFS: Cannot open root device "mmcblk0p6" or unknown-block(0,0): error -6
90523 [ 3.784066] Please append a correct "root=" boot option; here are the available partitions:
90524 [ 3.792414] 0100 524288 ram0
90525 [ 3.792415] (driver?)
90526 [ 3.798505] 0101 524288 ram1
90527 [ 3.798506] (driver?)
90528 [ 3.804597] 0102 524288 ram2
90529 [ 3.804597] (driver?)
90530 [ 3.810688] 0103 524288 ram3
90531 [ 3.810689] (driver?)
90532 [ 3.816779] 0104 524288 ram4
90533 [ 3.816779] (driver?)
90534 [ 3.822869] 0105 524288 ram5
90535 [ 3.822869] (driver?)
90536 [ 3.826935] mmc0: Tuning timeout, falling back to fixed sampling clock
90537 [ 3.827155] mmc0: tuning execution failed: -110
90538 [ 3.827162] mmc0: error -110 whilst initialising MMC card
90539 [ 3.845386] 0106 524288 ram6

0539 [ 3.845386] 0106 524288 ram6
90540 [ 3.845386] (driver?)
90541 [ 3.851476] 0107 524288 ram7
90542 [ 3.851477] (driver?)
90543 [ 3.857568] 0108 524288 ram8
90544 [ 3.857569] (driver?)
90545 [ 3.863660] 0109 524288 ram9
90546 [ 3.863661] (driver?)
90547 [ 3.869751] 010a 524288 ram10
90548 [ 3.869752] (driver?)
90549 [ 3.875928] 010b 524288 ram11
90550 [ 3.875929] (driver?)
90551 [ 3.882106] 010c 524288 ram12
90552 [ 3.882106] (driver?)
90553 [ 3.888283] 010d 524288 ram13
90554 [ 3.888284] (driver?)
90555 [ 3.894461] 010e 524288 ram14
90556 [ 3.894461] (driver?)
90557 [ 3.900639] 010f 524288 ram15
90558 [ 3.900639] (driver?)
90559 [ 3.906821] 1f00 65536 mtdblock0
90560 [ 3.906821] (driver?)
90561 [ 3.913345] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
90562 [ 3.913348] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.90-rt35+g134788b16485 #1
90563 [ 3.913349] Hardware name: LS1046A RDB Board (DT)

Thanks,

Prafull