rpmsg not working in in latest bsp imx-5.4.24-2.1.0.xml

[rakesh_patel]

Board

======

imx6sx

Logs

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

[ 0.234310] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.4.24-2.1.0+gbabac00 #1
[ 0.234318] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 0.234347] [<8010f978>] (unwind_backtrace) from [<8010b668>] (show_stack+0x10/0x14)
[ 0.234364] [<8010b668>] (show_stack) from [<807b516c>] (dump_stack+0x90/0xa4)
[ 0.234386] [<807b516c>] (dump_stack) from [<8012ad14>] (__warn+0xbc/0xd8)
[ 0.234404] [<8012ad14>] (__warn) from [<8012ad94>] (warn_slowpath_fmt+0x64/0xc4)
[ 0.234421] [<8012ad94>] (warn_slowpath_fmt) from [<80115f0c>] (__arm_ioremap_pfn_caller+0xe0/0x1bc)
[ 0.234435] [<80115f0c>] (__arm_ioremap_pfn_caller) from [<80116028>] (__arm_ioremap_caller+0x40/0x50)
[ 0.234455] [<80116028>] (__arm_ioremap_caller) from [<80640b7c>] (imx_rpmsg_find_vqs+0x98/0x18c)
[ 0.234472] [<80640b7c>] (imx_rpmsg_find_vqs) from [<80640000>] (rpmsg_probe+0xe4/0x358)
[ 0.234492] [<80640000>] (rpmsg_probe) from [<8046c528>] (virtio_dev_probe+0x1f4/0x2c0)
[ 0.234508] [<8046c528>] (virtio_dev_probe) from [<804b73d4>] (really_probe+0x1e0/0x348)
[ 0.234523] [<804b73d4>] (really_probe) from [<804b76b0>] (driver_probe_device+0x60/0x170)
[ 0.234535] [<804b76b0>] (driver_probe_device) from [<804b7960>] (device_driver_attach+0x58/0x60)
[ 0.234546] [<804b7960>] (device_driver_attach) from [<804b79c0>] (__driver_attach+0x58/0xcc)
[ 0.234564] [<804b79c0>] (__driver_attach) from [<804b5730>] (bus_for_each_dev+0x78/0xc0)
[ 0.234580] [<804b5730>] (bus_for_each_dev) from [<804b6754>] (bus_add_driver+0x15c/0x1e0)
[ 0.234594] [<804b6754>] (bus_add_driver) from [<804b8220>] (driver_register+0x74/0x108)
[ 0.234614] [<804b8220>] (driver_register) from [<80b38118>] (rpmsg_init+0x10/0x38)
[ 0.234633] [<80b38118>] (rpmsg_init) from [<801026d0>] (do_one_initcall+0x58/0x1c4)
[ 0.234649] [<801026d0>] (do_one_initcall) from [<80b00ef4>] (kernel_init_freeable+0x138/0x1d4)
[ 0.234666] [<80b00ef4>] (kernel_init_freeable) from [<807cb358>] (kernel_init+0x8/0x110)
[ 0.234682] [<807cb358>] (kernel_init) from [<801010e8>] (ret_from_fork+0x14/0x2c)
[ 0.234691] Exception stack(0x92051fb0 to 0x92051ff8)
[ 0.234704] 1fa0: 00000000 00000000 00000000 00000000
[ 0.234715] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 0.234728] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 0.234741] ---[ end trace 5faca3ea20d7e545 ]---
[ 0.234767] virtio_rpmsg_bus: probe of virtio0 failed with error -12

Dts 

===========

&rpmsg{
vdev-nums = <1>;
compatible = "fsl,imx6sx-rpmsg";
reg = <0x9FFF0000 0x10000>;
status = "okay";
};

Query

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

1) What is the reason for this?

2) NXP has released a new BSP for A9 core. Does any changes on the M4 side? (I see, there is no release for M4 code )

Note:

========

We were using NXP BSP(having kernel 4.1), where everything was working fine.

This is with only new kernel 5.4

[joanxie]

pls don't use 5.4.24-2.1.0, try to use 5.4.3-1.0.0 or 5.4.47_2.2.0, then tell me the result

[rakesh_patel]

@joanxie :

Thanks for your reply.

I got just worried why  imx-5.4.24-2.1.0.xml not work? It is part of NXP yocto user guide.

Can you please add more information here?

Rakesh

[joanxie]

refer to the release note, we didn't test this version on imx6sx, so don't know what error or issue customer would get, so I don't suggest that you test this version, pls try the latest version 5.4.47_2.2.0, this is tested version, if you get any error, we can support and debug it

[rakesh_patel]

@joanxie :

I could not find it in the release note "Known issue/Limitations" section.

Can you please add more detail here?

[rakesh_patel]

@joanxie :

In release note, it is mentioned that:

"All
i.MX 6, 7 and 8M Mini and 8M Quad boards were full tested
and production quality as GA in 5.4.24_2.1.0"

I can not find anything not tested for imx6sx. Can you please add more detail here?

[rakesh_patel]

@joanxie :

Any update here?

[joanxie]

pls find Table 1. Board Validation and Support Scope of release note, we suggest customer to use GA Quality. if you don't insist on using this version, I really suggest that you can use the latest 5.4.47 version

[rakesh_patel]

@joanxie :

This 5.4.24-2.1.0 also says GA quality for imx6sx as per Table-1 in the release note.

We are using a custom board having imx6sx. So porting custom changes again required a full re-cycle of everything and re-testing.

If there is any specific known issue in this release(5.4.24-2.1.0) then only, we can think to use the latest version. Otherwise, it is difficult for us.

[rakesh_patel · Accepted solution]

@joanxie : I solved rpmsg issue. This is because of some memory corruption issue due to rpmsg_reserved memory node.