st7123 (sitronix,st7123) - the MIPI-DSI display panel itself, driven over ESP-IDF's esp_lcd_st7123 component (DPI/DBI interface, ESP32-P4 and other SOC_MIPI_DSI_SUPPORTED targets only). Owns the MIPI DSI PHY LDO channel and DSI bus directly, so unlike SPI/RGB panels it has no parent bus controller device.
st7123-touch (sitronix,st7123-touch) - the panel's in-cell capacitive touch controller, a separate I2C device, driven over ESP-IDF's esp_lcd_touch_st7123 component. Sits at a fixed I2C address (0x55) - the devicetree reg is documentation only, not used to probe the bus. Reset is usually wired through the board's IO expander rather than a direct SoC GPIO (every known user of this driver so far does it that way), hence pin-reset defaults unset; it's still exposed for parity with the other touch drivers (e.g. gt911-module) in case a board wires it directly.

License: Apache v2.0