Hi,
Using AM5728 core to use mSATA part number: SQF-SMSM44-32G-S8C from Advantech.
I haven't configured anything in the device tree and i have been following the instructions as mentioned in SATA user's guide.
Attached here is the log. I had the device connected in the slave port.
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root@am57xx-evm:~# ls
ahci.ko ahci_platform.ko libahci.ko libahci_platform.ko libata.ko
root@am57xx-evm:~# insmod libata.ko
root@am57xx-evm:~# insmod libahci.ko
root@am57xx-evm:~# insmod libahci_platform.ko
root@am57xx-evm:~# insmod ahci.ko
root@am57xx-evm:~# insmod ahci_platform.ko
[ 178.552203] ahci 4a140000.sata: SSS flag set, parallel bus scan disabled
[ 178.562936] ahci 4a140000.sata: AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl platform mode
[ 178.572167] ahci 4a140000.sata: flags: 64bit ncq sntf stag pm led clo only pmp pio slum part ccc apst
[ 178.625874] scsi host0: ahci
[ 178.651890] ata1: SATA max UDMA/133 mmio [mem 0x4a140000-0x4a1410ff] port 0x100 irq 359
[ 188.683988] ata1: softreset failed (device not ready)
[ 198.713986] ata1: softreset failed (device not ready)
[ 209.343990] ata1: link is slow to respond, please be patient (ready=0)
[ 233.763990] ata1: softreset failed (device not ready)
[ 233.769187] ata1: limiting SATA link speed to 1.5 Gbps
[ 238.983989] ata1: softreset failed (device not ready)
[ 238.989306] ata1: reset failed, giving up
[ 238.993530] ata1: exception Emask 0x10 SAct 0x0 SErr 0x4050202 action 0xe frozen t4
[ 239.003407] ata1: irq_stat 0x00400040, connection status changed
[ 239.009867] ata1: SError: { RecovComm Persist PHYRdyChg CommWake DevExch }
[ 239.018367] ata1: hard resetting link
[ 249.023987] ata1: softreset failed (device not ready)
[ 249.029177] ata1: hard resetting link
[ 259.033988] ata1: softreset failed (device not ready)
[ 259.039179] ata1: hard resetting link
[ 270.063988] ata1: link is slow to respond, please be patient (ready=0)
[ 294.063987] ata1: softreset failed (device not ready)
[ 294.069184] ata1: limiting SATA link speed to 1.5 Gbps
[ 294.076033] ata1: hard resetting link
[ 299.263989] ata1: softreset failed (device not ready)
[ 299.269310] ata1: reset failed, giving up
[ 299.273534] ata1: exception Emask 0x10 SAct 0x0 SErr 0x4050202 action 0xe frozen t3
[ 299.283402] ata1: irq_stat 0x00400040, connection status changed
[ 299.289870] ata1: SError: { RecovComm Persist PHYRdyChg CommWake DevExch }
[ 299.298362] ata1: hard resetting link
[ 309.303987] ata1: softreset failed (device not ready)
[ 309.309174] ata1: hard resetting link
[ 319.313989] ata1: softreset failed (device not ready)
[ 319.319182] ata1: hard resetting link
[ 330.343986] ata1: link is slow to respond, please be patient (ready=0)
[ 354.343986] ata1: softreset failed (device not ready)
[ 354.349183] ata1: limiting SATA link speed to 1.5 Gbps
[ 354.356030] ata1: hard resetting link
^C
[ 359.543991] ata1: softreset failed (device not ready)
[ 359.549308] ata1: reset failed, giving up
[ 359.553534] ata1: exception Emask 0x10 SAct 0x0 SErr 0x4050202 action 0xe frozen t2
[ 359.563424] ata1: irq_stat 0x00400040, connection status changed
[ 359.570008] ata1: SError: { RecovComm Persist PHYRdyChg CommWake DevExch }
[ 359.578500] ata1: hard resetting link
[ 362.383984] INFO: task kworker/u2:0:6 blocked for more than 120 seconds.
[ 362.390838] Tainted: G W 4.1.13-g8dc6617 #6
[ 362.398378] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 362.406587] kworker/u2:0 D c05a8f80 0 6 2 0x00000000
[ 362.413242] Workqueue: events_unbound async_run_entry_fn
[ 362.420282] [<c05a8f80>] (__schedule) from [<c05a92e0>] (schedule+0x40/0x98)
[ 362.429767] [<c05a92e0>] (schedule) from [<bf00d520>] (ata_port_wait_eh+0x88/0x114 [libata])
[ 362.440139] [<bf00d520>] (ata_port_wait_eh [libata]) from [<bf007d4c>] (ata_port_probe+0x24/0x30 [libata])
[ 362.452908] [<bf007d4c>] (ata_port_probe [libata]) from [<bf007d90>] (async_port_probe+0x38/0x64 [libata])
[ 362.463778] [<bf007d90>] (async_port_probe [libata]) from [<c0050870>] (async_run_entry_fn+0x48/0x14c)
[ 362.475050] [<c0050870>] (async_run_entry_fn) from [<c00491c8>] (process_one_work+0x124/0x368)
[ 362.485027] [<c00491c8>] (process_one_work) from [<c0049470>] (worker_thread+0x64/0x550)
[ 362.493383] [<c0049470>] (worker_thread) from [<c004e25c>] (kthread+0xd4/0xec)
[ 362.502308] [<c004e25c>] (kthread) from [<c000f4a8>] (ret_from_fork+0x14/0x2c)
[ 362.509904] Kernel panic - not syncing: hung_task: blocked tasks
[ 362.516051] ---[ end Kernel panic - not syncing: hung_task: blocked tasks
