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SATA - link down

ranchu
Guru 20755 points

Hello,

We encounter issue when connecting SATA to DM8148 custom board, in which we sometimes ( ~1 to 6-10 reset) get link down after reset for the sata connection. trying to reset the sata does not help. we are using sata gen 3. Is there a known issue with sata ? What can we do ?

Thanks,

Ran

  • 0
    TI__Guru**** 170625 points

    Ran,

    Ran Shalit said:
    we are using sata gen 3

    What is the silicon revision of your DM814x device?

    We have silicon bug for DM814x PG2.1 and earlier devices, see DM814x Silicon errata:

    Advisory 2.1.28  SATA: Link Establishment Fails With SATA GEN3 Capable Targets

    Revision(s) Affected:  2.1

    Details:  When connecting a SATA GEN3 capable target, for example a Hard Disk Drive (HDD), to a device with a SATA Host Subsystem (after power-up or reset) the speed negotiation fails between the two devices and no link is established.

    See also the below links:

    http://processors.wiki.ti.com/index.php/TI_SATA_FAQ

    http://processors.wiki.ti.com/index.php/EZSDK_Using_SATA_drive_for_Data#Preparing_the_SATA_drive

    http://processors.wiki.ti.com/index.php/TI81XX_PSP_04.04.00.02_Release_Notes#SATA_2

    http://processors.wiki.ti.com/index.php/TI81XX_PSP_04.04.00.02_Feature_Performance_Guide#SATA_Driver

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/341402.aspx

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/304287.aspx

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/370425.aspx

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/357599/1261548.aspx#1261548

    BR
    Pavel