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

[abhijit]

Hi All,

Just to update,

Karo doesn't have support 2.6.35 Linux Kernel

However I observed that even w.r.t u-boot, tx53 based board returns zero 
as GPU ID and QSRB board returns proper GPU ID

Regards,
   Abhijit

On Friday 24 November 2017 10:43 AM, abhijit wrote:
> Hi all,
> 
> @Wladimir, Thank you very much for you kind response.
> 
> I am planning to boot older version of linux kernel(2.6) on Karo board 
> and use reverse engineering tools to get any GPU related settings.
> 
> Please let me know what are the important settings I have to look into, 
> that may be useful to address the issue of GPU chip ID becoming zero.
> 
> Regards,
>     Abhijit
> 
> On Thursday 16 November 2017 03:42 PM, Wladimir J. van der Laan wrote:
>> Hello abhijit,
>>
>> On Thu, Nov 16, 2017 at 01:02:21PM +0530, abhijit wrote:
>>> 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?
>>
>> Unfortunately I don't know, I've never been involved in that side of 
>> board
>> bringup, I just write (mostly user space) graphics drivers.
>>
>> Regards,
>> Wladimir
>>