Can not setup dual dispay in mirror mode on LCD and HDMI using iMX6

Hi,

I have IMX6 Apalis quad core module on a Ixora carrier board, LCD and HDMI monitor connected to the Ixora.
The LCD can be started with the following boot parameters:

setenv vidargs video=mxcfb0:dev=lcd,NewHaven4-3,if=RGB24 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off fbmem=32M

The HDMI can be started with the following boot parameters:

setenv vidargs video=mxcfb0:off video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb2:off video=mxcfb3:off fbmem=32M

I tried to start both in a mirror mode with the following boot parameters:

setenv vidargs video=mxcfb0:dev=lcd,NewHaven4-3,if=RGB24 video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb2:off video=mxcfb3:off fbmem=32M

After boot, I see only the boot console printout on the first display (mxcfb0) and the second displays stays black. Further tries with help of qt programs and direct echos to the framebuffer did not show any reaction.

My clock configurations are the following:

   clock                         enable_cnt  prepare_cnt        rate   accuracy   phase
----------------------------------------------------------------------------------------
 anaclk2                                  0            0           0          0 0
    lvds2_in                              0            0           0          0 0
 anaclk1                                  0            0           0          0 0
    lvds1_in                              0            0           0          0 0
 dummy                                    3            4           0          0 0
    lvds2_sel                             0            0           0          0 0
       lvds2_gate                         0            0           0          0 0
    usbphy2_gate                          1            1           0          0 0
    usbphy1_gate                          1            1           0          0 0
 clk24m                                   0            0    24000000          0 0
 osc                                      7            7    24000000          0 0
    cko2_sel                              1            1    24000000          0 0
       cko2_podf                          1            1    24000000          0 0
          cko2                            3            3    24000000          0 0
             cko                          1            1    24000000          0 0
    periph_clk2_sel                       0            0    24000000          0 0
       periph_clk2                        0            0    24000000          0 0
    gpt_3m                                1            1     3000000          0 0
    pll7_bypass_src                       1            1    24000000          0 0
       pll7                               1            1   480000000          0 0
          pll7_bypass                     1            1   480000000          0 0
             pll7_usb_host                1            1   480000000          0 0
                usbphy2                   1            1   480000000          0 0
    pll6_bypass_src                       1            1    24000000          0 0
       pll6                               1            1   500000000          0 0
          pll6_bypass                     1            1   500000000          0 0
             pll6_enet                    1            1   500000000          0 0
                enet_ref                  1            1   125000000          0 0
                pcie_ref                  0            0   125000000          0 0
                   pcie_ref_125m           0            0   125000000          0 0
                sata_ref                  0            0   100000000          0 0
                   sata_ref_100m           0            0   100000000          0 0
                      lvds1_sel           0            0   100000000          0 0
                         lvds1_gate           0            0   100000000          0 0
    pll5_bypass_src                       1            1    24000000          0 0
       pll5                               1            1   720000000          0 0
          pll5_bypass                     1            1   720000000          0 0
             pll5_video                   1            1   720000000          0 0
                pll5_post_div             1            1   180000000          0 0
                   pll5_video_div           1            1    45000000          0 0
                      ipu2_di1_pre_sel           0            0    45000000          0 0
                         ipu2_di1_pre           0            0    15000000          0 0
                            ipu2_di1_sel           0            0    15000000          0 0
                               ipu2_di1           0            0    15000000          0 0
                      ipu2_di0_pre_sel           0            0    45000000          0 0
                         ipu2_di0_pre           0            0    15000000          0 0
                            ipu2_di0_sel           0            0    15000000          0 0
                               ipu2_di0           0            0    15000000          0 0
                      ipu1_di1_pre_sel           1            1    45000000          0 0
                         ipu1_di1_pre           1            1     9000000          0 0
                            ipu1_di1_sel           1            1     9000000          0 0
                               ipu1_di1           1            1     9000000          0 0
                                  ipu1_pclk1_sel           1            1     9000000          0 0
                                     ipu1_pclk1_div           1            1     9000000          0 0
                                        ipu1_pclk1           1            1     9000000          0 0
                      ipu1_di0_pre_sel           0            0    45000000          0 0
                         ipu1_di0_pre           0            0    15000000          0 0
                            ipu1_di0_sel           0            0    15000000          0 0
                               ipu1_di0           0            0    15000000          0 0
                      ldb_di1_sel           0            0    45000000          0 0
                         ldb_di1_div_7           0            0     6428571          0 0
                            ldb_di1_div_sel           0            0     6428571          0 0
                               ldb_di1           0            0     6428571          0 0
                         ldb_di1_div_3_5           0            0    12857142          0 0
                      ldb_di0_sel           0            0    45000000          0 0
                         ldb_di0_div_7           0            0     6428571          0 0
                            ldb_di0_div_sel           0            0     6428571          0 0
                               ldb_di0           0            0     6428571          0 0
                         ldb_di0_div_3_5           0            0    12857142          0 0
    pll4_bypass_src                       0            0    24000000          0 0
       pll4                               0            0   147456000          0 0
          pll4_bypass                     0            0   147456000          0 0
             pll4_audio                   0            0   147456000          0 0
                pll4_post_div             0            0    36864000          0 0
                   pll4_audio_div           0            0    36864000          0 0
    pll3_bypass_src                       1            1    24000000          0 0
       pll3                               1            1   480000000          0 0
          pll3_bypass                     1            1   480000000          0 0
             pll3_usb_otg                 3            3   480000000          0 0
                gpu2d_core_sel            0            0   480000000          0 0
                   gpu2d_core_podf           0            0   480000000          0 0
                      gpu2d_core           0            0   480000000          0 0
                asrc_sel                  0            0   480000000          0 0
                   asrc_pred              0            0   240000000          0 0
                      asrc_podf           0            0    30000000          0 0
                         asrc             0            0    30000000          0 0
                esai_sel                  0            0   480000000          0 0
                   esai_pred              0            0   240000000          0 0
                      esai_podf           0            0    30000000          0 0
                         esai_extal           0            0    30000000          0 0
                periph2_clk2_sel           0            0   480000000          0 0
                   periph2_clk2           0            0   480000000          0 0
                pll3_60m                  0            0    60000000          0 0
                   can_root               0            0    30000000          0 0
                      can2_serial           0            0    30000000          0 0
                      can1_serial           0            0    30000000          0 0
                   ecspi_root             0            0    60000000          0 0
                      ecspi5              0            0    60000000          0 0
                      ecspi4              0            0    60000000          0 0
                      ecspi3              0            0    60000000          0 0
                      ecspi2              0            0    60000000          0 0
                      ecspi1              0            0    60000000          0 0
                pll3_80m                  1            1    80000000          0 0
                   uart_serial_podf           1            1    80000000          0 0
                      uart_serial           1            2    80000000          0 0
                pll3_120m                 0            0   120000000          0 0
                pll3_pfd3_454m            0            0   454736842          0 0
                   spdif_sel              0            0   454736842          0 0
                      spdif_pred           0            0   227368421          0 0
                         spdif_podf           0            0    28421053          0 0
                            spdif           0            0    28421053          0 0
                pll3_pfd2_508m            0            0   508235294          0 0
                   ssi3_sel               0            0   508235294          0 0
                      ssi3_pred           0            0   127058824          0 0
                         ssi3_podf           0            0    63529412          0 0
                            ssi3           0            0    63529412          0 0
                   ssi2_sel               0            0   508235294          0 0
                      ssi2_pred           0            0   127058824          0 0
                         ssi2_podf           0            0    63529412          0 0
                            ssi2           0            0    63529412          0 0
                   ssi1_sel               0            0   508235294          0 0
                      ssi1_pred           0            0   127058824          0 0
                         ssi1_podf           0            0    63529412          0 0
                            ssi1           0            0    63529412          0 0
                pll3_pfd1_540m            1            1   540000000          0 0
                   hdmi_isfr              1            1   540000000          0 0
                   video_27m              0            0    27000000          0 0
                pll3_pfd0_720m            0            0   720000000          0 0
                usbphy1                   0            0   480000000          0 0
    pll2_bypass_src                       1            1    24000000          0 0
       pll2                               1            1   528000000          0 0
          pll2_bypass                     1            1   528000000          0 0
             pll2_bus                     2            2   528000000          0 0
                periph2_pre               0            0   528000000          0 0
                   periph2                0            0   528000000          0 0
                      mmdc_ch1_axi           0            0   528000000          0 0
                periph_pre                1            1   528000000          0 0
                   periph                 3            3   528000000          0 0
                      axi_sel             1            1   528000000          0 0
                         axi              2            2   264000000          0 0
                            openvg_axi           0            0   264000000          0 0
                            mlb           0            0   264000000          0 0
                            vpu_axi_sel           0            0   264000000          0 0
                               vpu_axi_podf           0            0   264000000          0 0
                                  vpu_axi           0            0   264000000          0 0
                            vdo_axi_sel           0            0   264000000          0 0
                               vdo_axi           0            0   264000000          0 0
                                  vdoa           0            0   264000000          0 0
                            emi_slow_sel           1            1   264000000          0 0
                               emi_slow_podf           1            1   132000000          0 0
                                  eim_slow           1            1   132000000          0 0
                            pcie_axi_sel           0            0   264000000          0 0
                               pcie_axi           0            0   264000000          0 0
                            gpu3d_axi           0            0   264000000          0 0
                            gpu2d_axi           0            0   264000000          0 0
                      mmdc_ch0_axi           2            3   528000000          0 0
                         gpu3d_core_sel           0            0   528000000          0 0
                            gpu3d_core_podf           0            0   528000000          0 0
                               gpu3d_core           0            0   528000000          0 0
                         ipu2_sel           0            1   528000000          0 0
                            ipu2_podf           0            1   264000000          0 0
                               ipu2           0            1   264000000          0 0
                                  ipu2_pclk1_sel           0            0   264000000          0 0
                                     ipu2_pclk1_div           0            0           0          0 0
                                        ipu2_pclk1           0            0           0          0 0
                                  ipu2_pclk0_sel           0            0   264000000          0 0
                                     ipu2_pclk0_div           0            0           0          0 0
                                        ipu2_pclk0           0            0           0          0 0
                               dcic2           0            0   264000000          0 0
                         ipu1_sel           1            1   528000000          0 0
                            ipu1_podf           1            1   264000000          0 0
                               ipu1           4            2   264000000          0 0
                                  ipu1_pclk0_sel           1            1   264000000          0 0
                                     ipu1_pclk0_div           1            1    25142857          0 0
                                        ipu1_pclk0           1            1    25142857          0 0
                               dcic1           0            0   264000000          0 0
                      ahb                 8            8   132000000          0 0
                         sdma            16            2   132000000          0 0
                         sata             1            1   132000000          0 0
                         rom              1            1   132000000          0 0
                         ocram            2            2   132000000          0 0
                         hdmi_iahb           1            1   132000000          0 0
                         esai_mem           0            0   132000000          0 0
                         esai_ipg           0            0   132000000          0 0
                         caam_aclk           1            1   132000000          0 0
                         caam_mem           1            1   132000000          0 0
                         asrc_mem           0            0   132000000          0 0
                         asrc_ipg           0            0   132000000          0 0
                         cko1_sel           0            0   132000000          0 0
                            cko1_podf           0            0    16500000          0 0
                               cko1           0            0    16500000          0 0
                         ipg              6            8    66000000          0 0
                            usboh3           1            1    66000000          0 0
                            uart_ipg           1            2    66000000          0 0
                            ssi3_ipg           0            0    66000000          0 0
                            ssi2_ipg           0            0    66000000          0 0
                            ssi1_ipg           0            1    66000000          0 0
                            spdif_gclk           0            1    66000000          0 0
                            spba           0            0    66000000          0 0
                            iim           0            0    66000000          0 0
                            gpt_ipg           1            1    66000000          0 0
                            enet           2            2    66000000          0 0
                            can2_ipg           0            0    66000000          0 0
                            can1_ipg           0            0    66000000          0 0
                            caam_ipg           1            1    66000000          0 0
                            ipg_per           1            1    66000000          0 0
                               pwm4           1            1    66000000          0 0
                               pwm3           0            0    66000000          0 0
                               pwm2           0            0    66000000          0 0
                               pwm1           0            0    66000000          0 0
                               i2c3           0            0    66000000          0 0
                               i2c2           0            0    66000000          0 0
                               i2c1           0            0    66000000          0 0
                               gpt_ipg_per           0            0    66000000          0 0
                pll2_pfd2_396m            3            3   396000000          0 0
                   enfc_sel               0            0   396000000          0 0
                      enfc_pred           0            0    79200000          0 0
                         enfc_podf           0            0    19800000          0 0
                            enfc           0            0    19800000          0 0
                               gpmi_io           0            0    19800000          0 0
                   emi_sel                0            0   396000000          0 0
                      emi_podf            0            0   198000000          0 0
                   usdhc4_sel             0            0   396000000          0 0
                      usdhc4_podf           0            0   198000000          0 0
                         usdhc4           0            0   198000000          0 0
                            gpmi_bch           0            0   198000000          0 0
                   usdhc3_sel             1            1   396000000          0 0
                      usdhc3_podf           1            1   198000000          0 0
                         usdhc3           3            3   198000000          0 0
                            apbh_dma           0            0   198000000          0 0
                            per1_bch           0            0   198000000          0 0
                            gpmi_bch_apb           0            0   198000000          0 0
                            gpmi_apb           0            0   198000000          0 0
                   usdhc2_sel             0            0   396000000          0 0
                      usdhc2_podf           0            0   198000000          0 0
                         usdhc2           0            0   198000000          0 0
                   usdhc1_sel             0            0   396000000          0 0
                      usdhc1_podf           0            0   198000000          0 0
                         usdhc1           0            0   198000000          0 0
                   hsi_tx_sel             1            1   396000000          0 0
                      hsi_tx_podf           1            1   198000000          0 0
                         hsi_tx           1            1   198000000          0 0
                   axi_alt_sel            0            0   396000000          0 0
                   step                   1            1   396000000          0 0
                      pll1_sw             1            1   396000000          0 0
                         arm              2            2   396000000          0 0
                            twd           1            1   198000000          0 0
                   pll2_198m              0            0   198000000          0 0
                pll2_pfd1_594m            0            0   594000000          0 0
                   gpu3d_shader_sel           0            0   594000000          0 0
                      gpu3d_shader           0            0   594000000          0 0
                pll2_pfd0_352m            0            0   352000000          0 0
    pll1_bypass_src                       0            0    24000000          0 0
       pll1_bypass                        0            0    24000000          0 0
          pll1_sys                        0            0    24000000          0 0
       pll1                               0            0   792000000          0 0
 ckih1                                    0            0           0          0 0
 ckil                                     0            0       32768          0 0

My lcd overlay is the following:

From bf6693b3c2a6acdc664a6e8cb487c8ce57d66502 Mon Sep 17 00:00:00 2001
Date: Thu, 21 Sep 2017 13:35:49 +0200
Subject: [PATCH 1/1] create patch for NewHavenDisplay support

Add an overlay and a native kernel support for NewHaven
Displays.
---
 arch/arm/boot/dts/imx6qdl-apalis.dtsi | 30 ++++++++++++++++++++++++++++++
 drivers/video/fbdev/mxc/mxc_lcdif.c   | 12 ++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
index 388ca3f..c244fa8 100644
--- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
@@ -62,6 +62,36 @@
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_ipu1_lcdif>;
 		status = "disabled";
+		panel-info {
+			ac-bias           = <255>;
+			ac-bias-intrpt    = <0>;
+			dma-burst-sz      = <16>;
+			bpp               = <32>;
+			fdd               = <0x80>;
+			sync-edge         = <0>;
+			sync-ctrl         = <1>;
+			raster-order      = <0>;
+			fifo-th           = <0>;
+		};
+
+		display-timings {
+			native-mode = <&timing0>;
+			timing0: 480x272 {
+				clock-frequency = <9000000>;
+				hactive = <480>;
+				vactive = <272>;
+				hfront-porch = <2>;
+				hback-porch = <2>;
+				hsync-len = <41>;
+				vback-porch = <2>;
+				vfront-porch = <2>;
+				vsync-len = <10>;
+				hsync-active = <0>;
+				vsync-active = <0>;
+				de-active = <1>;
+				pixelclk-active = <0>;
+			};
+		};
 	};
 
 	memory {
diff --git a/drivers/video/fbdev/mxc/mxc_lcdif.c b/drivers/video/fbdev/mxc/mxc_lcdif.c
index 1636bae..4fd94c0 100644
--- a/drivers/video/fbdev/mxc/mxc_lcdif.c
+++ b/drivers/video/fbdev/mxc/mxc_lcdif.c
@@ -37,6 +37,18 @@ struct mxc_lcdif_data {
 
 static struct fb_videomode lcdif_modedb[] = {
 	{
+	/* 480x272 @ 60 Hz , pixel clk @ 9 MHz */ 
+	"NewHaven4-3", 60, 480, 272, 111111,
+	 .left_margin = 2,
+	 .right_margin = 2,
+	 .hsync_len = 41,
+	 .upper_margin = 2,
+	 .lower_margin = 2,
+	 .vsync_len = 10,
+	 .sync = 0,
+	 .vmode = FB_VMODE_NONINTERLACED,
+	 .flag = 0,},
+	{
 	/* 1024x600 @ 59 Hz , pixel clk @ 45 MHz */ /* 22222 ps*/
 	"FusionF10A", 59, 1024, 600, 22222,
 	 .left_margin = 104,
-- 
2.7.4

I do not see why this is not working. Please help me.

I tried to start both in a mirror mode with the following boot parameters:

I’m not sure what exactly you are talking about. There is no such “mirror mode” as stated in the following article on our developer website. Furthermore the Vivante X driver may only ever output to one single display interface.

Probably what you are looking for would require a different approach like e.g. using Qt 5 with EGLFS.

How can I use Qt 5 with EGLFS?

Have a look e.g. here:

https://www.toradex.com/community/questions/20223/imx6-linuximagev28-qt5-eglfs-egl-surface-error-0x3.html

BTW: Rather than hijacking an old question which is discouraged, asking a new one, exactly stating what exact hardware and software versions of things you are talking about would be much better.