hi，everyone
I have a problem about hdmi+bt656 display in the same ipu.Our env is linux-3.10.53,android-4.4.3,the IC is imx6q.
we want to use ipu1 to output 1080p (lvds in split mode),and use ipu2 di0 to output s-video,and use ipu2 di1 to output hdmi(1080p).
1、I patch "0001-Support-BT656-and-BT1120-output-for-iMX6-ipuv3.patch",
2、change the file ipu_disp.c, function ipu_init_sync_panel():
rounded_pixel_clk =
clk_round_rate(ipu->di_clk[disp], pixel_clk);
+ if(pixel_fmt == IPU_PIX_FMT_BT656)
+ rounded_pixel_clk = 108000000;
ret = clk_set_rate(ipu->di_clk[disp],
rounded_pixel_clk);
if (ret) {
dev_err(ipu->dev,
"set di clk rate error:%d\n", ret);
return ret;
}
dev_dbg(ipu->dev, "di clk:%d\n", rounded_pixel_clk);
ret = clk_set_parent(ipu->pixel_clk_sel[disp],
ipu->di_clk[disp]);
3、change the file clk-imx6q.c,function imx6q_clocks_init
//imx_clk_set_parent(clk[ipu2_di0_pre_sel], clk[pll5_video_div]);
imx_clk_set_parent(clk[ipu2_di0_pre_sel], clk[pll3_pfd1_540m]);
4、change the dts file in arch/arm/boot/dts/imx6qdl-sabresd.dtsi
lcd@0 {
compatible = "fsl,lcd";
ipu_id = <1>;
disp_id = <0>;
default_ifmt = "BT656";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ipu2_2>;
status = "okay";
};
5、the bootargs is :
setenv bootargs console=ttymxc0,115200 noinitrd init=/init rw root=179:5 video=mxcfb0:dev=ldb,if=RGB666,bpp=32 video=mxcfb1:dev=lcd,BT656-NTSC,if=BT656,bpp=32 video=mxcfb2:dev=hdmi,1920x1080M@60,if=RGB24,fbpix=RGB565 fbmem=64M,64M,64M fb0base=0x27b00000 androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale
now I success to display LVDS(ipu1 in split mode) + svideo(bt656+adv7391),but the hdmi can not dispaly.
================================
so I change the source file in mxc_ipu3_fb.c,function mxcfb_probe
/* first user uses DP with alpha feature */
if (!g_dp_in_use[mxcfbi->ipu_id]) {
mxcfbi->ipu_ch_irq = IPU_IRQ_BG_SYNC_EOF;
mxcfbi->ipu_ch_nf_irq = IPU_IRQ_BG_SYNC_NFACK;
mxcfbi->ipu_alp_ch_irq = IPU_IRQ_BG_ALPHA_SYNC_EOF;
mxcfbi->ipu_ch = MEM_BG_SYNC;
/* Unblank the primary fb only by default */
....
...
}
else
{
mxcfbi->ipu_ch_irq = IPU_IRQ_DC_SYNC_EOF;
mxcfbi->ipu_ch_nf_irq = IPU_IRQ_DC_SYNC_NFACK;
mxcfbi->ipu_alp_ch_irq = -1;
mxcfbi->ipu_ch = MEM_DC_SYNC;
mxcfbi->cur_blank = mxcfbi->next_blank = FB_BLANK_POWERDOWN;
ret = mxcfb_register(fbi);
if (ret < 0)
goto mxcfb_register_failed;
}
change to
if ((mxcfbi->ipu_id == 1) && of_machine_is_compatible("fsl,imx6q"))
{
/* first user uses DC */
if (!g_dc_in_use[mxcfbi->ipu_id]) // g_dc_in_use[2] is defined same as g_dp_in_use
{
mxcfbi->ipu_ch_irq = IPU_IRQ_DC_SYNC_EOF;
mxcfbi->ipu_ch_nf_irq = IPU_IRQ_DC_SYNC_NFACK;
mxcfbi->ipu_alp_ch_irq = -1;
mxcfbi->ipu_ch = MEM_DC_SYNC;
mxcfbi->cur_blank = mxcfbi->next_blank = FB_BLANK_POWERDOWN;
ret = mxcfb_register(fbi);
if (ret < 0)
goto mxcfb_register_failed;
g_dc_in_use[mxcfbi->ipu_id] = true;
}
else
{
mxcfbi->ipu_ch_irq = IPU_IRQ_BG_SYNC_EOF;
mxcfbi->ipu_ch_nf_irq = IPU_IRQ_BG_SYNC_NFACK;
mxcfbi->ipu_alp_ch_irq = IPU_IRQ_BG_ALPHA_SYNC_EOF;
...
...
}
else
{
XXX;// copy old code for ipu0
}
and the bootargs is :
setenv bootargs console=ttymxc0,115200 noinitrd init=/init rw root=179:5 video=mxcfb0:dev=ldb,if=RGB666,bpp=32 video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24,fbpix=RGB565 video=mxcfb2:dev=lcd,BT656-NTSC,if=BT656,bpp=32 fbmem=64M,64M,64M fb0base=0x27b00000 androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale
and the lvds + hdmi is OK,but s-video can not dispaly(the TV display device can detect signal,but the screen is all gray),the bt656's clk is 27Mhz, data bus have signal too.
It sames like I cannot display hdmi + bt656 in same ipu,can you help me?
Best wishes!
