how to display lvds + hdmi at the same time on Linux?
We want to display the same content on LVDS0 and HDMI based on mx6q_sabresd board. Our LVDS lcd is 1024x768-16bpp.
We modified the file board-mx6q_sabresd.c in the kernel file as following:
static struct fsl_mxc_hdmi_platform_data hdmi_data = {
.init = hdmi_init,
.enable_pins = hdmi_enable_ddc_pin,
.disable_pins = hdmi_disable_ddc_pin,
.phy_reg_vlev = 0x0294,
.phy_reg_cksymtx = 0x800d,
};
static struct fsl_mxc_hdmi_core_platform_data hdmi_core_data = {
.ipu_id = 1,
.disp_id = 0,
};
static struct fsl_mxc_lcd_platform_data lcdif_data = {
.ipu_id = 0,
.disp_id = 0,
.default_ifmt = IPU_PIX_FMT_RGB565,
};
static struct fsl_mxc_ldb_platform_data ldb_data = {
.ipu_id = 1,
.disp_id = 1,
.ext_ref = 1,
.mode = LDB_SEP1,
.sec_ipu_id = 1,
.sec_disp_id = 0,
};
static struct ipuv3_fb_platform_data sabresd_fb_data[] = {
{ /*fb0*/
.disp_dev = "ldb",
.interface_pix_fmt = IPU_PIX_FMT_RGB666,
.mode_str = "LDB-NEC-XGA",
.default_bpp = 16,
.int_clk = false,
.late_init = false,
},
{
.disp_dev = "ldb",
.interface_pix_fmt = IPU_PIX_FMT_RGB666,
.mode_str = "LDB-LG-LP101",
.default_bpp = 16,
.int_clk = false,
.late_init = false,
},
{
.disp_dev = "hdmi",
.interface_pix_fmt = IPU_PIX_FMT_RGB24,
.mode_str = "1920x1080M@60",
.default_bpp = 32,
.int_clk = false,
.late_init = false,
},
{
.disp_dev = "lcd",
.interface_pix_fmt = IPU_PIX_FMT_RGB565,
.mode_str = "CLAA-WVGA",
.default_bpp = 16,
.int_clk = false,
.late_init = false,
} ,
};
and our uboot argument is :
setenv bootargs_emmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait rw video=mxcfb0:dev=ldb,LDB-NEC-XGA,if=RGB666 video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24 ldb=dul0'
the result is as the pictures attached.
Can any one give me some tips?
