linux-kernel - Re: sun6i MIPI DSI driver EoTp

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Message-ID: <20190312155253.kdsqgby32jgagdta@flea>
Date:   Tue, 12 Mar 2019 16:52:53 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Sergey Suloev <ssuloev@...altech.com>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: sun6i MIPI DSI driver EoTp

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

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