Re: sun6i MIPI DSI driver EoTp

Sergey Suloev
2019-03-12T19:18:06Z

Hi, Maxime,

On 3/12/19 6:52 PM, Maxime Ripard wrote:
> Hi,
>
> On Mon, Mar 11, 2019 at 09:43:36PM +0300, Sergey Suloev wrote:
>> according to MIPI DSI spec chapter 8.8.2  the EoTp packet can be enabled or
>> disabled on the protocol level.
>> It seems like that it might be required for the panel I am working on (Himax
>> HX8379A-based panel).
>> Here is some crappy driver I found on github showing that it might be an
>> issue  [1]
>>
>> May I ask you if this feature supported by sun6i MIPI DSI driver and
>> where ?
>> As there is no datasheet available, could you please help to support this
>> feature (if not yet) ?
> I haven't seen any panel that used it so far, so I have no idea.
>
> I guess this would be controlled through
> SUN6I_DSI_BASIC_CTL0_HS_EOTP_EN in the driver.

thanks for pointing this

>> The second point is that the panel requires NON-BURST-WITH-SYNC-EVENTS mode.
>> Could it be a problem with the current driver?
> That should be supported in -next

does your "should" mean "already supported" or "will be supported" ?
I did a quick compare 4.20.15 with next and there is no difference in
MIPI DSI driver code (apart from moving phy away).

> Maxime