Enable MIPI mode to be set via devicetree, for displays that support
multiple MIPI DBI modes. This commit also adds new helpers for displays
that allow drivers to initialize the entire MIPI DBI configuration
structure from devicetree
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Add devicetree binding for NXP LCDIC. This controller is capable of
driving displays in 8080 or SPI 3/4 wire mode, and optionally swapping
endianness of display data as it sends it.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Add clarifications to mipi-dbi bindings to avoid the confusion
between two options, write-only and duplex.
Signed-off-by: Eve Redero <eve.redero@gmail.com>
Change reset pin polarity for MIPI DBI SPI controller, so that the board
devicetree is responsible for setting the GPIO to active low, and the
driver always sets the pin to a logic 1 to reset the display.
Fixes#68562
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
SPI controllers can easily implement MIPI DBI mode C, with the help of
GPIO pins for the reset and command/data signals. Introduce a MIPI DBI
compliant SPI driver, which emulates MIPI DBI mode C (SPI 3 and 4 wire).
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Introduce MIPI DBI driver class. MIPI DBI devices encompass several
interface types. All interfaces have a data/command, reset, chip select,
and tearing effect signal
Beyond this, MIPI DBI operates in 3 modes:
Mode A- 16/8 data pins, one clock pin, one read/write pin. Similar to
Motorola type 6800 bus
Mode B- 16/8 data pins, one read/write pin. Similar to Intel 8080 bus
Mode C- 1 data output pin, 1 data input pin, one clock pin.
Implementable using SPI peripheral, or MIPI-DBI specific controller.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
