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fix(i80_lcd): fix dma stuck with high pclk

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Chen Jichang
2026-02-11 12:09:13 +08:00
parent ffba8f4295
commit d3bdd18ddc
1 changed files with 2 additions and 2 deletions
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4
components/esp_lcd/i80/esp_lcd_panel_io_i80.c
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@@ -722,9 +722,9 @@ static void lcd_start_transaction(esp_lcd_i80_bus_t *bus, lcd_i80_trans_descript
// always start GDMA, because the lcd will only start working after the dma retrieves the data
gdma_start(bus->dma_chan, gdma_link_get_head_addr(bus->dma_link));
// delay 1us is sufficient for DMA to pass data to LCD FIFO
// delay 4us is sufficient for DMA to pass data to LCD FIFO
// in fact, this is only needed when LCD pixel clock is set too high
esp_rom_delay_us(1);
esp_rom_delay_us(4);
lcd_ll_start(bus->hal.dev);
}