Hi,neil: 
Thank you for your reply, it's not that the polarity of reset is different. The state of this rst needs to be high during a certain period of time (when hid touch communicate,). I have tried to set the default property to high in DT, but from the log and waveform, the rseet single is set to low by boe_panel_add before hid touch communication.As shown in the picture, rst needs to be high before hid ready. Datasheet: https://github.com/HimaxSoftware/Doc/tree/main/Himax_Chipset_Power_Sequence
On Mon, May 22, 2023 at 3:24 PM <neil.armstrong@xxxxxxxxxx> wrote:
Hi,
On 19/05/2023 10:01, Cong Yang wrote:
> The previous patch is not based on drm-misc-next, resend this series.
> Support Starry-himax83102-j02 and Starry-ili9882t TDDI MIPI-DSI panel,
> set the default high for RST at boe_panel_add and add lp11_before_reset flag.
If the reset gpio polarity is different, please change it in the DT by using
a different gpio flag instead of changing the driver.
However if the logic is different and reset must never be asserted to low,
the the bindings + driver to make the reset line optional and set a gpio-hog
in DT to keep it at a safe level.
Neil
> Cong Yang (2):
> drm/panel: Support for Starry-himax83102-j02 TDDI MIPI-DSI panel
> drm/panel: Support for Starry-ili9882t TDDI MIPI-DSI panel
>
> .../gpu/drm/panel/panel-boe-tv101wum-nl6.c | 474 +++++++++++++++++-
> 1 file changed, 473 insertions(+), 1 deletion(-)
>
