最近在调试imx6q的启动logo屏显，<board>.c下关于lvds的部分驱动代码：
struct display_info_t const displays[] = {{
.bus = -1,
.addr = -1,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = detect_baseboard,
.enable = NULL,
.mode = {
.name = "G121X1",
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15385,
.left_margin = 20,
.right_margin = 300,
.upper_margin = 30,
.lower_margin = 8,
.hsync_len = 1,
.vsync_len = 1,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} }, {
.bus = -1,
.addr = 3,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = detect_hdmi,
.enable = do_enable_hdmi,
.mode = {
.name = "HDMI",
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15385,
.left_margin = 220,
.right_margin = 40,
.upper_margin = 21,
.lower_margin = 7,
.hsync_len = 60,
.vsync_len = 10,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} } };
size_t display_count = ARRAY_SIZE(displays);
static void setup_display(void)
{
struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
int reg;
enable_ipu_clock();
imx_setup_hdmi();
reg = readl(&mxc_ccm->CCGR3);
reg |= MXC_CCM_CCGR3_LDB_DI0_MASK;
writel(reg, &mxc_ccm->CCGR3);
reg = readl(&mxc_ccm->cs2cdr);
reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK |
MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
reg |= (3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET) |
(3 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
writel(reg, &mxc_ccm->cs2cdr);
reg = readl(&mxc_ccm->cscmr2);
reg |= (MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
writel(reg, &mxc_ccm->cscmr2);
reg = readl(&mxc_ccm->chsccdr);
reg |= (CHSCCDR_CLK_SEL_LDB_DI0<< MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
writel(reg, &mxc_ccm->chsccdr);
reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
| IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
| IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
| IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
| IOMUXC_GPR2_DATA_WIDTH_CH1_24BIT
| IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
| IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
| IOMUXC_GPR2_LVDS_CH1_MODE_ENABLED_DI0
| IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
writel(reg, &iomux->gpr[2]);
reg = readl(&iomux->gpr[3]);
reg = (reg & ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK |IOMUXC_GPR3_LVDS1_MUX_CTL_MASK |IOMUXC_GPR3_HDMI_MUX_CTL_MASK))
| (IOMUXC_GPR3_MUX_SRC_IPU1_DI0<< IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET)
| (IOMUXC_GPR3_MUX_SRC_IPU1_DI0<< IOMUXC_GPR3_LVDS1_MUX_CTL_OFFSET);
writel(reg, &iomux->gpr[3]);
imx_iomux_v3_setup_multiple_pads(backlight_pads,
ARRAY_SIZE(backlight_pads));
gpio_direction_input(LVDS_POWER_GP);
gpio_direction_input(LVDS_BACKLIGHT_GP);
}
以上已经完成了开机logo通过lvds0连接到屏幕的显示。
如何添加lvds1的驱动信号，设置dual模式，使得uboot在开机时能够通过lvds0和lvds1分别显示相同内容到两块屏幕？
谢谢！
