Although not documented in the HX8394 datasheet, it seems that the
display fails to initialize if MIPI HS mode is used to send
configuration commands. Therefore, we must make sure all initialization
commands are sent with the MIPI_DSI_MSG_USE_LPM flag set.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
As the display API now check against valid callback functions and
returns -ENOSYS (or equalent), there is no need to provide
such functions in the driver code
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Fix settings for TEAR and DPHYCMD0 to match initialization data
provided by MCUX SDK driver. The following fixes were needed:
- Tear effect signal should only be sent at the VBLANK interval, so TEON
should be set to 0x0
- DPHYCMD0 LP-RX VHYS trimming was incorrectly being set to 37mV, when
it should be set to 66mV (the default value)
These changes resolve some flickering and blooming that occasionally
occurred during initialization
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Add driver for HX8394 TFT LCD controller. This controller is driven via
MIPI DSI, and is configured for a 720x1280 display
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
