AM335x for LIDD mode

Hi TI

我們使用 ST7735R (120x168) TFT LCD 8080 mode

我參考了 AM335x TRM 13.3.4 LIDD controller 章節 以及 e2e.ti.com/.../849350 Leonerdo  提供的 drivers/lcd 

然後將 rasterDisplay.c  修改成 lidd mode 初始過程:     請幫我看一下對不對

image.h :

#ifndef CONFIG_SPL_BUILD
unsigned int const image1[] __attribute__((aligned(4)))= {
0x4000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u,

};

#endif

#define SOC_LCDC_0_REGS                     0x4830E000

#define LCDC_CLKC_ENABLE   (0x6C)

#define LCDC_RASTER_CTRL   (0x28)

#define LCDC_LCD_CTRL   (0x4)

#define LCDC_LIDD_CTRL   (0xC)

#define LCDC_LCDDMA_CTRL   (0x40)

#define LCDC_CLKC_ENABLE_CORE   (0x00000001u)

#define LCDC_CLKC_ENABLE_DMA   (0x00000004u)

#define LCDC_CLKC_ENABLE_LIDD   (0x00000002u)

#define LCDC_RASTER_CTRL_RASTER_EN   (0x00000001u)

#define LCDC_LCD_CTRL_MODESEL_LIDD   (0x0u)

#define LCDC_LCD_CTRL_CLKDIV_SHIFT   (0x00000008u)

#define LCDC_LIDD_CTRL_LIDD_DMA_EN_ACTIVATE   (0x1u)

#define LCDC_LIDD_CTRL_LIDD_DMA_EN_SHIFT   (0x00000008u)

#define LCDC_LCDDMA_CTRL_FRAME_MODE   (0x00000001u)

#define LCDC_LCDDMA_CTRL_BURST_SIZE_SHIFT   (0x00000004u)

#define LCDC_LCDDMA_CTRL_TH_FIFO_READY_SHIFT   (0x00000008u)

#define LCDC_LIDD_CTRL_LIDD_MODE_SEL_SYNC_MPU80   (0x2u)

rasterDisplay.c:

                       # include "image.h"

                      int  Lcd_Init (){

                             unsigned int clkDiv;

                           /*  **Clock for DMA,LIDD and for Core(which encompasses
                               ** Raster Active Matrix and Passive Matrix logic)
                               ** enabled. */

                       HWREG(SOC_LCDC_0_REGS + LCDC_CLKC_ENABLE) =  (LCDC_CLKC_ENABLE_CORE | LCDC_CLKC_ENABLE_DMA  | LCDC_CLKC_ENABLE_LIDD);

                         /* Disable raster */

                       HWREG(SOC_LCDC_0_REGS + LCDC_RASTER_CTRL) &= ~LCDC_RASTER_CTRL_RASTER_EN;

                        /* Configure the pclk */

                        clkDiv = 192000000 / 23040000 ;

                       HWREG(SOC_LCDC_0_REGS + LCDC_LCD_CTRL) = LCDC_LCD_CTRL_MODESEL_LIDD;
                       HWREG(SOC_CLDC_0_REGS + LCDC_LCD_CTRL) |= (clkDiv <<  LCDC_LCD_CTRL_CLKDIV_SHIFT);

                      /* DMA enable in lidd mode */

                     HWREG(SOC_LCDC_0_REGS + LCDC_LIDD_CTRL) = (LCDC_LIDD_CTRL_LIDD_DMA_EN_ACTIVATE << LCDC_LIDD_CTRL_LIDD_DMA_EN_SHIFT);

                      /* Configuring DMA of LCD controller */
                      HWREG(SOC_LCDC_0_REGS + LCDC_LCDDMA_CTRL) = LCDC_LCDDMA_CTRL_FRAME_MODE | (4 <<LCDC_LCDDMA_CTRL_BURST_SIZE_SHIFT ) | (0 << LCDC_LCDDMA_CTRL_TH_FIFO_READY_SHIFT) | 0;
 
                          // Configuring the base ceiling
                         HWREG(SOC_LCDC_0_REGS + LCDC_LCDDMA_FB0_BASE) = (unsigned int)image1 ;
                         HWREG(baseAddr + LCDC_LCDDMA_FB0_CEILING) = (unsigned int)image1 + sizeof(image1) - 2;

                         HWREG(SOC_LCDC_0_REGS + LCDC_LCDDMA_FB1_BASE) = (unsigned int)image1 ;
                         HWREG(baseAddr + LCDC_LCDDMA_FB0_CEILING) = (unsigned int)image1 + sizeof(image1) - 2;

                         // Enable End of frame0/frame1 interrupt

                         HWREG(SOC_LCDC_0 + LCDC_IRQENABLE_SET) = (RASTER_END_OF_FRAME0_INT | RASTER_END_OF_FRAME1_INT);
                    

                        RasterModeConfig(SOC_LCDC_0_REGS, RASTER_DISPLAY_MODE_TFT_UNPACKED,
                                                            RASTER_PALETTE_DATA, RASTER_COLOR, RASTER_RIGHT_ALIGNED);  --> 這個 function 裡面是用 raster register 去做控制，我沒看到有 LIDD 的

    // Enable lidd
     HWREG(SOC_LCDC_0_REGS + LCDC_LIDD_CTRL) |= LCDC_LIDD_CTRL_LIDD_MODE_SEL_SYNC_MPU80;
}

     上面這些是我針對 LIDD mode 作的初始，但感覺我還是少了很多，拜託給我些 feedback ，謝謝。