Add support to automatically detect the panel for the Anbernic RGxx3.
This is done by creating a "pseudo driver" that provides only the bare
minimum to start the DSI controller and DSI DPHY. Once started, we then
can query the panel for its panel ID and compare it to a table of known
values. The panel compatible string (which corresponds to the upstream
Linux driver) is then defined as an environment variable "panel". The
panel compatible string is also changed automatically via an
ft_board_setup() call if what is detected differs from what is in the
loaded tree. This way, end users can use the same bootloader without
having to worry about which panel they have (as there is no obvious
way of knowing).
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add support for the RG353PS to the Anbernic RGxx3. This device is a
slightly pared down version of the RG353P with no eMMC, no touchscreen,
and only 1GB of RAM.
Refactor board logic so that all supported devices are defined with
ADC values and that future boards can be added by just defining the
board values in the device array.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The Anbernic RGxx3 is a "pseudo-device" that encompasses the following
devices:
- Anbernic RG353M
- Anbernic RG353P
- Anbernic RG353V
- Anbernic RG353VS
- Anbernic RG503
The rk3566-anbernic-rgxx3.dtsi is synced with upstream Linux, but
rk3566-anbernic-rgxx3.dts is a U-Boot specific devicetree that
is used for all RGxx3 devices.
Via the board.c file, the bootloader automatically sets the correct
fdtfile, board, and board_name environment variables so that the
correct devicetree can be passed to Linux. It is also possible to
simply hard-code a single devicetree in the boot.scr file and use
that to load Linux as well.
The common specifications for each device are:
- Rockchip RK3566 SoC
- 2 external SDMMC slots
- 1 USB-C host port, 1 USB-C peripheral port
- 1 mini-HDMI output
- MIPI-DSI based display panel
- ADC controlled joysticks with a GPIO mux
- GPIO buttons
- A PWM controlled vibrator
- An ADC controlled button
All of the common features are defined in the devicetree synced from
upstream Linux.
TODO: DSI panel auto-detection for the RG353 devices (requires porting
of DSI controller driver and DSI-DPHY driver to send DSI commands to
the panel).
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
