连接不上SATA硬盘，请问如何解决？

我用ti的EVM板连接SATA硬盘，但是出现如下问题，请问如何解决。
PHY: 0:01 - Link is Up - 100/Full
ata1: SATA link down (SStatus 0 SControl 300)
ata2: softreset failed (1st FIS failed)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2: link online but 1 devices misclassified, retrying
ata2: softreset failed (device not ready)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2.00: failed to read native max address (err_mask=0x100)
ata2.00: HPA support seems broken, skipping HPA handling
ata2: link is slow to respond, please be patient (ready=0)
ata2: softreset failed (device not ready)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2.00: qc timeout (cmd 0xec)
ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
ata2: limiting SATA link speed to 1.5 Gbps
ata2: link is slow to respond, please be patient (ready=0)
ata2: softreset failed (device not ready)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata2.00: ATA-8: ST31000528AS, CC38, max UDMA/133
ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 31/32)
ata2.00: failed to IDENTIFY (I/O error, err_mask=0x100)
ata2.00: revalidation failed (errno=-5)
ata2.00: disabled
ata2: exception Emask 0x12 SAct 0x0 SErr 0x800500 action 0x6 frozen t4
ata2: irq_stat 0x08000000, interface fatal error
ata2: SError: [ UnrecovData Proto LinkSeq ]
ata2: hard resetting link
ata2: link is slow to respond, please be patient (ready=0)
ata2: softreset failed (device not ready)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)