Ken Van Hoeylandt
19 lines
1.1 KiB
Markdown
19 lines
1.1 KiB
Markdown
# ST7123 display + touch controller
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Two drivers for the Sitronix `ST7123`, sharing this module since they're the same physical chip
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family and commonly used together:
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- **`st7123`** (`sitronix,st7123`) - the MIPI-DSI display panel itself, driven over ESP-IDF's
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`esp_lcd_st7123` component (DPI/DBI interface, ESP32-P4 and other `SOC_MIPI_DSI_SUPPORTED`
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targets only). Owns the MIPI DSI PHY LDO channel and DSI bus directly, so unlike SPI/RGB panels
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it has no parent bus controller device.
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- **`st7123-touch`** (`sitronix,st7123-touch`) - the panel's in-cell capacitive touch controller,
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a separate I2C device, driven over ESP-IDF's `esp_lcd_touch_st7123` component. Sits at a fixed
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I2C address (0x55) - the devicetree `reg` is documentation only, not used to probe the bus.
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Reset is usually wired through the board's IO expander rather than a direct SoC GPIO (every
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known user of this driver so far does it that way), hence `pin-reset` defaults unset; it's
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still exposed for parity with the other touch drivers (e.g. `gt911-module`) in case a board
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wires it directly.
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License: [Apache v2.0](LICENSE-Apache-2.0.md)
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