TDA4VM: UFS pass through enablement, need related SMMU stream ID

Hi Leon,

Which SDK version are you using? The jailhouse demo was supported a while back and hence the question.

- Keerthy

Hi, Keerthy, 

Thanks for your quick response.

My SDK version is PROCESSOR-SDK-LINUX-J721E  06.02.00.07 (18 Feb 2020)

I'm trying to enable UFS native driver in Linux virtual machine over jailhouse hypervisor. (UFS pass through)

In jailhouse hypervisor and virtual machine configuration file, several SMMU stream ids are listed, but there is no further description

• <SDK>/board-support/extra-drivers/jailhouse-0.10+gitAUTOINC+b3a68ac89d/configs/arm64/k3-j721e-evm.c

.stream_ids = { 2, 256, 257, 258, 259, 260, 261, 262,
263, 264, 265, 266, 267, 268, 269, 270, 0xf002,
0x4100, 0x4101, 0x4102, 0x4103, 0x4104, 0x4105,
0x8100, 0x8101, 0x8102, 0x8103, 0x8104, 0x8105},

• <SDK>/board-support/extra-drivers/jailhouse-0.10+gitAUTOINC+b3a68ac89d/configs/arm64/k3-j721e-evm-linux-demo.c

.stream_ids =  { 3, 0xf003, },

I'm not sure if UFS host related stream id is included or not. 

Could you help check it ?

Thanks.

Hi,

I am checking internally on this.

leon wang said:

I'm not sure if UFS host related stream id is included or not. 

The jailhouse demo is no longer supported in the latest SDKs. That said I will try get answer on the stream ID question.

- Keerthy

Hi,

I couldn't get the details on the stream id for UFS. Jail House is no longer supported and am not getting references.

Regards,

Keerthy 

Hi, Keerthy, 

Let me clarify.

Stream id is setting of peripheral SoC host for SMMU function, which is fixed during SoC design. 

It doesn't depend on any software (e.g., jailhouse hypervisor or qnx hypervisor)

Maybe could you help ask HW SoC design colleague for help ?

Thanks for your help in advance !

Regards, 

Leon

Hi, Keerthy, 

I notice someone else asked similar SMMU stream id question:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1065426/tda4vm-which-devices-use-the-smmu-in-tda4-k3-j721e

And seems that KB provided stream id info offline for reference.

Could you help check with KB ?

Thanks. 

I am checking with Kip. I will get back to you as soon as I hear. Thanks for sharing the related post.

Best Regards,

Keerthy 

Hi, Keerthy, 

Do you have any update about this ?

Thanks.

Hi Leon,

We will get back in a couple of days. I do not have an answer yet. We will get back.

Best Regards,

Keerthy 

Hi, kb,

I leave private message to you, please have a check.

From datasheet. UFS host module is connected with SMMU module in hardware.

So it should be doable to patch jailhouse to enable UFS <--> SMMU, that's the work I'm trying to do.

If UFS pass through solution is done on J721e/TDA4 ref board, Micron can use it as demo system and show to Auto customer.

It will be good collaboration story for TI and Micron.

If any NDA concern, I ask Micron eco-system team for help to sign agreement document.

Thanks for your help in advance.

Best Regards, 

Leon

Hi Leon,

We will need some time to get back on this. We will get back when we have additional information on this.

- Keerthy