lcd_panel.io.spi: panel_io_spi_tx_color(395): spi transmit (queue) color failed (ESP32-S3-Touch-AMOLED-2.06)

[pdumais]

I am getting SPI errors when the screen gets redrawn. I added a log in esp_lcd_sh8601.c to get information about the size of data being sent on the SPI bus. I seem to be getting those errors only when the size is around 80k. Should I be tunning something about buffers?
My application is an LVGL app using bsp.

I (369504) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (369509) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (369514) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (369520) sh8601: tx_color cmd: 0x32002c00, param_size: 11664
I (369526) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (369531) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (369536) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (369756) sh8601: tx_color cmd: 0x32002c00, param_size: 81536
E (369757) lcd_panel.io.spi: panel_io_spi_tx_color(395): spi transmit (queue) color failed
I (369772) sh8601: tx_color cmd: 0x32002c00, param_size: 81536
E (369773) lcd_panel.io.spi: panel_io_spi_tx_color(395): spi transmit (queue) color failed
I (369784) sh8601: tx_color cmd: 0x32002c00, param_size: 81536
E (369785) lcd_panel.io.spi: panel_io_spi_tx_color(395): spi transmit (queue) color failed
I (369793) sh8601: tx_color cmd: 0x32002c00, param_size: 54880
I (369797) sh8601: tx_color cmd: 0x32002c00, param_size: 1408
I (370487) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (370490) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (370494) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (370498) sh8601: tx_color cmd: 0x32002c00, param_size: 10944
I (370501) sh8601: tx_color cmd: 0x32002c00, param_size: 10944

[pdumais]

I read, on another thread, that the esp32s3 can only transfer 32k at a time on the spi bus. So just for fun, I modified this code:

static lv_display_t *bsp_display_lcd_init()
{
  const bsp_display_config_t disp_config = {
      .max_transfer_sz = 4096, // BSP_LCD_H_RES * BSP_LCD_V_RES * BSP_LCD_BITS_PER_PIXEL / 8,
  };

With a buffer size of 4096, I no longer have the issue. 65536 or 32768 does not help. Should there be a fix for this?

[pdumais]

Is it possible that using too much transparency could result in errors like the one described? I'm not sure if I should be expecting an esp32 to perform well with multiple layers of transparent objects. Is this known to affect perfromances?

[Y1hsiaochunnn]

This issue arises during the transmission process. Since the requested resources are typically stored in SRAM by default, the size of the data configuration in SRAM can be appropriately adjusted, or all of them can be placed in PSRAM instead.

Set SPIRAM_MALLOC_ALWAYSINTERNAL to 0, so that all buffers will be stored in PSRAM.