Research Allwinner V3s test VPU Cedrus

[petit_miner]

Hi there,

 

I'm currently struggling to get the Cedrus VPU up and running. I have downloaded the specific version from bootlin and got the kernel up and running, however the V3s isn't supported by the Sunxi SRAM driver.

This driver is important to get the VPU going. I tried altering the devicetree of the V3s to match a SoC that is somehow similiar, but it clearly failed for obvious reasons.

 

I get this error message:

 

[    1.035259] cedrus 1c0e000.video-codec: Failed to claim SRAM
[    1.040990] cedrus 1c0e000.video-codec: Failed to probe hardware
[    2.478247] cedrus 1c0e000.video-codec: Failed to claim SRAM
[    2.484047] cedrus 1c0e000.video-codec: Failed to probe hardware
[    2.505765] cedrus 1c0e000.video-codec: Failed to claim SRAM
[    2.511591] cedrus 1c0e000.video-codec: Failed to probe hardware
[    8.595278] cedrus 1c0e000.video-codec: Failed to claim SRAM
[    8.601112] cedrus 1c0e000.video-codec: Failed to probe hardware

 

I tried to understand whats going on in the linux/drivers/soc/sunxi/sunxi_sram.c file to adapt this driver to the V3s, but in the end I don't know how to do that.

I hope somebody can help me with that or can give me a hint.

 

[jernej]

Show your DT patch. It shouldn't be that hard to make it work.

[jagath]

Hi 

 

I am trying to use v3s for video encoding with cedrus driver.

i am not able to use cedrus with mainline kernal without proper device tree can you share your dt. is the problem is resolved ?

[wolfallein]

Hi,

 

Did you managed to solve this?

Could you share your dts, I'm not able to get it working.