[Openpvrsgx-devgroup] DDK 1.17 on S5PV210

[H. Nikolaus Schaller]

Hi Jonathan,

> Am 30.03.2020 um 00:43 schrieb Jonathan Bakker <xc-racer2 at live.ca>:
> 
> Hi Nikolaus,
> 
> On 2020-03-29 1:07 p.m., H. Nikolaus Schaller wrote:
>> Hi Jonathan,
>> So maybe we can add the s5pv210 setup there
>> 
>> (https://github.com/xc-racer99/linux/commit/54d5952136c7d1fa6c3fc792a8497ed26bba39dd ?)
> 
> Yep, that's the DTS commit.

I have included it now and this defines "samsung,s5pv210-sgx540-120".

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.

BR and thanks,
Nikolaus