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imx6 ata initialize question

Question asked by Rudolph Hsueh on Jul 7, 2015
Latest reply on Jul 12, 2015 by Rudolph Hsueh

Hi all,

     I recently porting the SATA with imx6(quad-core). But I always can't get the right volume information.

 

I'm  ensure that my sata had been set in kernel init period. Here is the kernel message:

==================================================================================

[ 1677.724423] ata1: hard resetting link

[ 1678.685972] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

[ 1678.692856] ata1.00: ATA-8: SSE032GPTC0-S81, S8FM04.3, max UDMA/100

[ 1678.699665] ata1.00: 62533296 sectors, multi 16: LBA48 NCQ (depth 31/32)

[ 1678.707025] ata1.00: configured for UDMA/100

[ 1678.711476] ata1: EH complete

[ 1680.226612] scsi 0:0:0:0: Direct-Access     ATA      SSE032GPTC0-S81  S8FM PQ: 0 ANSI: 5

[ 1680.238112] sd 0:0:0:0: [sda] 62533296 512-byte logical blocks: (32.0 GB/29.8 GiB)

[ 1680.247428] sd 0:0:0:0: [sda] Write Protect is off

[ 1680.252503] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00

[ 1680.257932] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA

[ 1680.269009]  sda: sda1

E/DirectVolume( 2341): [DirectVol[ 1680.272993] sd 0:0:0:0: [sda] Attached SCSI disk

==================================================================================

 

It is similar to the documents what I reference named i.MX_6_Linux_Reference_Manual.pdf.

 

But I'm not sure whether sata initialize is correctly or not. I just see only one node show in /dev/block/vold/8:1

 

I take the USB disk to compare with SATA. USB disk always show two node in /dev/block/vold/8:16 and 8:17

 

And vold daemon will get the /dev/block/vold/8:16 to check devtype. After check devtype it will get 8:17 to mount USB partition.

 

But SATA doesn't have another node to let vold determine devtype. So my android always not get correct message from kernel.

 

May I have any suggestions, If there anyone knows it, please tell me how to make like USB disk in /dev/block/vold to show correct node.

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