[Openpvrsgx-devgroup] DDK 1.17 on S5PV210

[Jonathan Bakker]

Hi Nikolaus,

On 2020-04-09 5:27 a.m., H. Nikolaus Schaller wrote:
> Hi Jonathan,
> 
> 
> I have included it now and this defines "samsung,s5pv210-sgx540-120".

Awesome, thanks.

> 
> One thing we should check is which sgx revision the hardware reports.
> We have found that the jz4780 and the a83 are different from what
> I have assumed so far.
> 
> So please can you check the silicon which version it does report?
> 
> You should try to dump (devmem2?) the registers at
> 
> 0xf3000020	VERSION
> 0xf3000024	REVISION
> 
> VERSION should be 0x01140000 for an sgx540
> and REVISION should be 0x00010200 for -120.
> 
> For this it should suffice to load the pvrsrvkm.
> 
> Here is what the jz4780 CI20 board reports:
> 
> 0x13040020 01140000 SGX_CORE_VERSION
> 0x13040024 00010300 SGX_CORE_REVISION
> 
> i.e. it is an sgx540-130.
> 
> The SGX_CORE_REVISION isn't used much by the driver
> code, except for turning on/off some errata. So I
> hope the driver works equally well.

It is indeed an sgx540-120:

samsung-aries:~$ sudo ./busybox devmem 0xf3000020
0x01140000
samsung-aries:~$ sudo ./busybox devmem 0xf3000024
0x00010200


> 
> BR and thanks,
> Nikolaus
> 

Thanks,
Jonathan