sample_embedding_folder2/0679675.txt

Ticket Name: Linux/TDA2: No communication on SATA interface

Query Text:
Part Number: TDA2 Tool/software: Linux Hi everyone, I am using VSDK Linux configuration running on TDA2x SoC and trying to have communication between TDA2x and hard disk drive via SATA interface. However, I have no communication at all. All 4 signals on SATA connectors are on 0 level. During the u-boot execution I noticed messages SCSI: SATA link 0 timeout. AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl SATA mode and during kernel execution message SATA link down (SStatus 0 SControl 300). Can someone explain me what these messages mean? Also, I noticed that result of command parted -l is giving me only partitions on SD card from which system is run, but there is no SATA device. Should there be some change in configuration of linux kernel so SATA interface is active? Thanks in advance, Sasa

Responses:
Hi Sasa, If I remember well, most EVMs do not have a power supply for the hdd. Can you check the hdd spins and all necessary power supplies are in place (they should be described on the hdd itself) . Most probably you will need to provide power externally. Thanks, Stan

Hi Stan, we are using custom board with SATA interface on it. Power supply for HDD is external and it is working properly. Best regards, Sasa

Hi Sasa, sorry for the delayed response. I have pinged a Linux expert to help. Regards, Yordan

Hi Sasa We have not been testing SATA connectivity as part of our SDK releases for some time now(not much of customer traction for SATA in automotive) Can you clarify on the SDK version that you are testing and also attach a full kernel bootup log - can review and provide feedback. In general SATA link down message indicates that the link establishment did not work - need to check for potential connectivity issues. As Yprdan asked before, can you confirm if the external HDD is independently powered and you see the HDD spinning up as part of the init sequence?

Hi Sriram, problem was SATA connector which was soldered in wrong way(turned for 180 degrees around). Thank you for your effort. Regards, Sasa