Struggling to connect SPI display

General
1

Hi team,

I am using following mentioned spi display with axon. Please help to figure out the mapping of its pin with axon gpios.

I tried the debugging but not able to resolve it.

Display link: https://robu.in/product/smartelex-1-69-inch-tft-lcd-display/?gad_source=1&gad_campaignid=18585959909&gbraid=0AAAAADvLFWdUSGZ5gcYlUpEbuQLgz3yev&gclid=CjwKCAjw-dfOBhAjEiwAq0RwIz6X-RR4zdeZ9EggCYHJ7l05uouwjs--8cT0Yxm3sL8ttcF5WUckPhoCkWMQAvD_BwE

2

Here. you can find documentation of using GPIO as SPI.

3

@Avi_Shihora I followed the same doc. Backlight is on but nothing rendering on display. Tried to change configs but still not working.

4

Since, it is rkchip. Do we know what lib to use for spi display? @Avi_Shihora

5

What are the configs and dtbo/dtb you have added/modified in kernel !?

I found that you may require driver SR7789V.

The SmartElex 1.69-inch TFT LCD module (240x280 resolution) uses the ST7789V3 (or ST7789V2) driver IC and supports a 4-wire SPI interface.

Driver & Library Support

  • Driver IC: ST7789V / ST7789V3.

So, You have to add support of TFT LCD Driver ST7789V CONFIG_FB_TFT_ST7789V=y in kernel.

For that you required to build kernel and apply in axon.

6

(post deleted by author)

7

Kernel will require support for every display to run, to add support you can clone the repo, GitHub - vicharak-in/vicharak-linux-kernel: Linux Kernel Source for Vicharak's Vaaman ( RK3399 based ) and Axon ( RK3588 based ) Boards · GitHub follow the guide provided by @Avi_Shihora

8
9

Definitely, we can do that. But what about patching and updates of kernel?
We have to manually fetch and configure it all the time.

I would suggest to make these changes in kernel master/6.1 repo so that others can also leverage it.

@djkabutar