Hi, Maxime,
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) ?
The second point is that the panel requires NON-BURST-WITH-SYNC-EVENTS
mode.
Could it be a problem with the current driver?
[1]
https://github.com/lnfamous/Kernel_Htc_Pico_CyanogenMod12.1/blob/ff5eed4b86f5c9e653ebde4d89fe969c6abf611a/drivers/video/msm/mipi_hx8379a_video_wvga_pt.c#L107
[2]
https://github.com/lnfamous/Kernel_Htc_Pico_CyanogenMod12.1/blob/ff5eed4b86f5c9e653ebde4d89fe969c6abf611a/drivers/video/msm/mipi_hx8379a_video_wvga_pt.c#L92
Thank you,
Sergey
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.
> 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
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com