Description
Summary
After #79996 is merged, some displays will still work correctly, others will not with the Zephyr display sample and hence will require drivers or devicetree modification.
This issue is there to track the situation of affected drivers, boards, displays and samples.
Describe the solution you'd like
Check which displays will be effectively involved (i.e. they supports RGB565 and / or BGR565) after the display sample got fixed:
| Driver | Type | RGB565 involved | Platform | Status |
|---|---|---|---|---|
| dummy | Emulated | No | - | |
| gc9x01x | RGB | Yes | ? | ? |
| hx8394 | RGB | Yes | ? | ? |
| ili9806e_dsi | RGB | Yes | ? | ? |
| ili9xxx | RGB | Yes | STM32F429I_DISC1 (ili9341) | ? |
| intel_multibootfb | Arch | No | ? | - |
| ist3931 | Mono | No | ? | - |
| led_strip_matrix | RGB | No | ? | - |
| ls0xx | Mono | No | ? | - |
| max7219 | Mono | No | ? | - |
| mcux_dcnano_lcdif | I/F | Yes | NXP | Already fixed |
| mcux_elcdif | I/F | Yes | NXP | Already fixed |
| microbit | LED | No | ? | - |
| nrf_led_matrix | Mono | No | ? | - |
| nt35510 | RGB | Yes | STM32H747I-Disco | ? |
| otm8009a | RGB | Yes | STM32H747I-Disco | ? |
| renesas_lcdc | I/F | Yes | Renesas | ? |
| renesas_ra | I/F | Yes | Renesas | ? |
| rm67162 | RGB | Yes | ? | ? |
| rm68200 | RGB | Yes | ? | ? |
| sdl | I/F | Yes | Simulation | ? |
| sh1122 | L_8 | No | ? | - |
| ssd1306 | Mono | No | ? | - |
| ssd1320 | L_8 | No | ? | - |
| ssd1322 | Mono | No | ? | - |
| ssd1327 | L_8 | No | ? | - |
| ssd1331 | RGB | Yes | None | Inherent fix in remap-config |
| ssd1351 | RGB | Yes | None | Inherent fix in remap-config |
| ssd1363 | L_8 | No | ? | - |
| ssd16xx | Mono | No | ? | - |
| st75256 | L_8 | No | ? | - |
| st7567 | Mono | No | ? | - |
| st7701 | RGB | Yes | ? | ? |
| st7735r | RGB | Yes | mini_stm32h743 | ? |
| st7789v | RGB | Yes | ? | ? |
| st7796s | RGB | Yes | ? | ? |
| stm32_ltdc | I/F | Yes | STM32* | No need to fix |
| uc81xx | Mono | No | ? | - |
Then review the situation of samples to make sure there is no extra swap involved:
- The samples/subsys/display collection
- The samples/drivers/display collection
- The samples/modules/lvgl collection
- The samples/drivers/video collection
- Others?
Then review the situation of boards to make sure a swap did not happen on boards
- List to be generated with
grep -r 565?
Then prepare a migration guide and release note with indications of what downstream users might need to do.
Alternatives
Alternatives to keep maintaining the swap as a long-term solution were rejected on #79996.
Let users report problems, but better catch as much as possible upstream.
Additional Context
Some drivers implemented workarounds to apply the reversal.
Display interface drivers might need to be checked to avoid double-inversion.