On 10/28/24 2:52 PM, Herve Codina wrote:
Hi Marek,
Hi,
On Sat, 26 Oct 2024 00:53:51 +0200
Marek Vasut <marex@xxxxxxx> wrote:
On 10/24/24 11:55 AM, Herve Codina wrote:
In some cases observed during ESD tests, the TI SN65DSI83 cannot recover
from errors by itself. A full restart of the bridge is needed in those
cases to have the bridge output LVDS signals again.
I have seen the bridge being flaky sometimes, do you have any more
details of what is going on when this irrecoverable error occurs ?
The panel attached to the bridge goes and stays black. That's the behavior.
A full reset brings the panel back displaying frames.
Is there some noticeable change in 0xe0/0xe1/0xe5 registers, esp. 0xe5,
do they indicate the error occurred somehow ?
0xe5 register can signal any DSI errors (depending on when the ESD affects
the DSI bus) even PLL unlock bit was observed set but we didn't see any
relationship between the bits set in 0xe5 register and the recoverable or
unrecoverable behavior.
Also, in some cases, reading the register was not even possible (i2c
transaction nacked).
Oh, wow, I haven't seen that one before. But this is really useful
information, can you please add it into the commit message for V2 ?
Thank you
