[Freedreno] Whether A200 driver is supported by Linux Mainline Kernel

[abhijit]

Hi Wladimir,

Thank you very much for you response.

I am using the kernel which is provided by you and I was able to 
successfully get the GPU driver on to imx53 based QSRB board.

I am using the same kernel for imx53 based tx53 board from karo, but I 
am having issue with getting GPU ID

Interestingly imx53.dtsi is common for both imx53-tx53-x13x.dts and 
imx53-qsrb.dts.

imx53.dtsi contains DTS entries for GPU and clocks.

I verified that clock values are same for both qsrb and tx53. Only thing 
I have to verify is if GPU completely powered on. Can you please let me 
know how to ensure this?

Regards,
    Abhijit


On Thursday 16 November 2017 11:30 AM, abhijit wrote:
> Hi All,
> 
> One more observation is, for TX53, uboot is enabling L2 cache "Enabling 
> L2 Cache .." but for QSRB it is not showing such message.
> 
> Please let me know if this can make difference. Which I think is 
> unlikely :)
> 
> Thank you for your help
> 
> Regards,
>     Abhijit
> On Friday 10 November 2017 05:16 PM, abhijit wrote:
>> Hi Wladimir,
>>
>> I am facing issues while getting freedreno driver to work on imx53 
>> based tx53 board from Karo
>>
>> I have earlier verified that A200 driver works for imx53 based QSRB 
>> board from Freescale. However for tx53 board, register read for 
>> getting chip ID is returning zero.
>>
>> Interestingly for both boards, dtsi is common, i.e imx53.dtsi.This 
>> dtsi contains,
>>     Clock information for CPU
>>     GPU device tree node
>>
>> Clock rates for both boards as below,
>>         kgsl_clock:gpu_clk 200000000
>>         kgsl_clock:garb_clk 400000000
>>
>> Following are output of /dev/cpuinfo for both boards
>>
>> QSRB(IMX):
>> processor       : 0
>> model name      : ARMv7 Processor rev 5 (v7l)
>> BogoMIPS        : 66.66
>> Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpd32
>> CPU implementer : 0x41
>> CPU architecture: 7
>> CPU variant     : 0x2
>> CPU part        : 0xc08
>> CPU revision    : 5
>>
>> Hardware        : Freescale i.MX53 (Device Tree Support)
>> Revision        : 0000
>> Serial          : 0000000000000000
>>
>> TX53(Karo):
>> processor       : 0
>> model name      : ARMv7 Processor rev 5 (v7l)
>> BogoMIPS        : 40.00
>> Features        : half thumb fastmult vfp edsp thumbee neon vfpv3 tls 
>> vfpd32
>> CPU implementer : 0x41
>> CPU architecture: 7
>> CPU variant     : 0x2
>> CPU part        : 0xc08
>> CPU revision    : 5
>>
>> Hardware        : Freescale i.MX53 (Device Tree Support)
>> Revision        : 0000
>> Serial          : 0000000000000000
>>
>> Can you please guide me how I can debug this issue or you have faced 
>> similar issues when you were developing the driver?
>>
>>  From output of cpuinfo, I see that only BogoMIPS is different for 
>> both CPUs, can this be an issue?
>>
>> Regards,
>>     Abhijit
>>
>> On Friday 08 September 2017 03:46 PM, Rob Clark wrote:
>>> mesa/freedreno supports gles as well as gl.. perhaps you built mesa
>>> without --enable-gles2?
>>>
>>> BR,
>>> -R
>>>
>>> On Fri, Sep 8, 2017 at 2:50 AM, abhijit naik 
>>> <abhijitnaik27 at gmail.com> wrote:
>>>> Hi All,
>>>>
>>>> I have requirement to support OPENGL ES 2.0 in GPU hardware.
>>>>
>>>> But freedreno supports OPENGL 1.4. To support OPEN GL ES 2.0, I am
>>>> planning to boot old linux kernel with binary only GPU driver and use
>>>> reverse engineering tools. As I don't see any other option.
>>>>
>>>> But before I start, I wanted to confirm whether Open GL ES 2.0 based
>>>> application can run with Open GL ES 1.4?
>>>>
>>>> My end goal is to use chromium browser on IMX537 based board.
>>>>
>>>> Please let me know your inputs.
>>>>
>>>> On Thu, Aug 17, 2017 at 4:04 PM, Wladimir J. van der Laan
>>>> <laanwj at gmail.com> wrote:
>>>>> Hello abhijit,
>>>>>
>>>>>> Now I am trying to run some 2D application from freedreno. I saw 
>>>>>> that these
>>>>>> applications use libC2D2.
>>>>>>
>>>>>> I was able to get this library for UNIX, but I am not able to get 
>>>>>> libstlport
>>>>>> for UNIX which is one of dependencies. I am concluding libC2D2 is 
>>>>>> specific
>>>>>> to Andriod
>>>>>
>>>>> You shouldn't need stlport for UNIX. As far as I remember it is a 
>>>>> stand-alone
>>>>> implementation of the C++ standard library. Both clang and GCC have 
>>>>> their
>>>>> own state-of-the-art C++ standard libraries readily available.
>>>>>
>>>>>> I am planning to use MonkVG and run tiger application that comes with
>>>>>> Khronos so that I can use 3D renderer for 2D.
>>>>>>
>>>>>> I am falling back to OPEN GL ES 2.0, as OPENVG implementation is
>>>>>> discontinued in Mesa
>>>>>
>>>>> I'm not sure what is the state of support for the 2D core, the 
>>>>> Z160, in
>>>>> freedreno. I personally will likely not have time to look at that.
>>>>>
>>>>> Using the 3D hardware makes sense, however. For example the 
>>>>> application I'm
>>>>> working on is also mostly a 2D application, it is built with Qt 
>>>>> Quick, which
>>>>> uses OpenGL ES 2 as rendering backend.
>>>>>
>>>>> Regards,
>>>>> Wladimir
>>>>
>>>>
>>>>
>>>> -- 
>>>> Best wishes,
>>>> Abhijit Naik
>>>