DESK-MX8M-L/Peripherals/HDMI
| HOME | SOMs | SBCs | ToloMEO Embedded Assistant |  GET A QUOTE
|
 ONLINE HELPDESK
|
| Roadmap | IoT Services | ML/AI services | Embedded Design Services |
| History | |||
|---|---|---|---|
| Issue Date | Notes | ||
| First DESK-MX8M-L release | |||
| DESK-MX8M-L-2.0.0 release | |||
| DESK-MX8M-L-4.0.0 release | |||
| 2024/04/11 | DESK-MX8M-L-4.1.0 release | ||
Contents
Peripheral HDMI[edit | edit source]
Device tree configuration[edit | edit source]
ORCA SOM[edit | edit source]
Here below an example of device tree configuration used on standard DAVE's kit for the ORCA SOM:
From imx8mp-mito8mplus-cb1001.dts:
...
...
sound-hdmi {
compatible = "fsl,imx-audio-cdnhdmi";
model = "audio-hdmi";
audio-cpu = <&aud2htx>;
hdmi-out;
constraint-rate = <44100>,
<88200>,
<176400>,
<32000>,
<48000>,
<96000>,
<192000>;
status = "okay";
};
...
...
&irqsteer_hdmi {
status = "okay";
};
&hdmi_blk_ctrl {
status = "okay";
};
&hdmi_pavi {
status = "okay";
};
&hdmi {
status = "okay";
};
&hdmiphy {
status = "okay";
};
From imx8mp-mito8mplus.dtsi:
&iomuxc {
...
...
pinctrl_hog: hoggrp {
fsl,pins = <
MX8MP_IOMUXC_HDMI_DDC_SCL__HDMIMIX_HDMI_SCL 0x400001c3
MX8MP_IOMUXC_HDMI_DDC_SDA__HDMIMIX_HDMI_SDA 0x400001c3
MX8MP_IOMUXC_HDMI_HPD__HDMIMIX_HDMI_HPD 0x40000019
MX8MP_IOMUXC_HDMI_CEC__HDMIMIX_HDMI_CEC 0x40000019
>;
};
...
...
};
MITO 8M Mini[edit | edit source]
Here below an example of device tree configuration used on standard DAVE's kit for the MITO 8M Mini SOM:
From imx8mm-mito8mmini.dtsi:
...
...
&i2c1 {
...
mipi_to_lvds: sn65dsi83@2c {
compatible = "ti,sn65dsi83";
reg = <0x2c>;
enable-gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>;
interrupts-extended = <&gpio1 5 GPIO_ACTIVE_HIGH>;
clocks = <&mipi_dsi 0>, <&clk IMX8MM_CLK_LCDIF_PIXEL>;
clock-names = "mipi_clk", "pixel_clock";
display = <&display_subsystem>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1_sn65dsi83>;
sync-delay = <512>;
dsi-lanes = <4>;
status = "okay";
lvds_ports: ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
lvds_in: endpoint {
remote-endpoint = <&mipi_out>;
data-lanes = <1 2 3 4>;
};
};
};
};
...
};
&lcdif {
status = "okay";
};
&mipi_dsi {
#clock-cells = <1>;
status = "okay";
port@1 {
mipi_out: endpoint {
remote-endpoint = <&lvds_in>;
attach-bridge;
};
};
};
&vpu_g1 {
status = "okay";
};
&vpu_g2 {
status = "okay";
};
&vpu_h1 {
status = "okay";
};
&gpu {
status = "okay";
};
...
...
From imx8mm-mito8mmini-cb100a.dts :
...
®ulators {
reg_lvds_pwr: lvds_pwr {
compatible = "regulator-fixed";
pinctrl-names = "default";
regulator-name = "lvds_pwr_en";
pinctrl-0 = <&pinctrl_lcd_3v3_enable>;
gpio = <&gpio4 29 GPIO_ACTIVE_HIGH>;
enable-active-high;
regulator-boot-on;
regulator-always-on;
};
reg_5v_bl: 5v_bl {
compatible = "regulator-fixed";
pinctrl-names = "default";
regulator-name = "5v_bl_en";
pinctrl-0 = <&pinctrl_lcd_5v_enable>;
gpio = <&gpio5 5 GPIO_ACTIVE_HIGH>;
enable-active-high;
regulator-boot-on;
regulator-always-on;
};
};
&i2c3 {
lvds-to-hdmi-bridge@4c {
compatible = "ite,it6263";
reg = <0x4c>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_it6263_en>;
reset-gpios = <&gpio5 2 GPIO_ACTIVE_LOW>;
status = "okay";
port {
it6263_in: endpoint {
remote-endpoint = <&lvds_out>;
};
};
};
};
&display_subsystem {
status = "okay";
};
&lvds_ports {
port@2 {
reg = <2>;
lvds_out: endpoint {
remote-endpoint = <&it6263_in>;
attach-bridge;
};
};
};
&iomuxc {
pinctrl_lcd_3v3_enable: lcd_3v3_en {
fsl,pins = <
MX8MM_IOMUXC_SAI3_RXC_GPIO4_IO29 0x19
>;
};
pinctrl_lcd_5v_enable: lcd_5v_en {
fsl,pins = <
MX8MM_IOMUXC_SPDIF_EXT_CLK_GPIO5_IO5 0x19
>;
};
pinctrl_it6263_en: it6263_en {
fsl,pins = <
MX8MM_IOMUXC_SAI3_MCLK_GPIO5_IO2 0x19
>;
};
};
Accessing the peripheral in ORCA SOM[edit | edit source]
Linux messages at boot time[edit | edit source]
... ... [ 0.336013] platform 32fd8000.hdmi: Fixing up cyclic dependency with 32fc6000.lcd-controller [ 2.352266] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2) [ 2.352931] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver [ 2.414060] imx-drm display-subsystem: bound 32fd8000.hdmi (ops dw_hdmi_imx_ops) ... ...
Additional information[edit | edit source]
HDMI framebuffer can be accessed through the modetest utility accessing the imx-drm DRM device for NXP i.MX SoCs.
Here below an example of SBC ORCA configured for HDMI and LVDS outputs:
root@desk-mx8mp:~# modetest -M imx-drm Encoders: id crtc type possible crtcs possible clones 37 33 LVDS 0x00000001 0x00000001 39 0 TMDS 0x00000002 0x00000002 Connectors: id encoder status name size (mm) modes encoders 38 37 connected HDMI-A-1 340x190 2 37 modes: index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot #0 1280x720 60.00 1280 1390 1430 1650 720 725 730 750 74250 flags: phsync, pvsync; type: driver #1 1280x720 50.00 1280 1720 1760 1980 720 725 730 750 74250 flags: phsync, pvsync; type: driver props: 1 EDID: flags: immutable blob blobs: value: 00ffffffffffff002074560100000000 141f010380221378fe6435a5544f9e27 125054bfea0061400101010101010101 010101010101021900a050d015203020 780059c21000001e000000fc00543038 30410a20202020202020000000ff0030 303030303030300a20202020000000fd 00304b545413010a20202020202001c9 020334f1461202030401132309070783 01000067030c001000384467d85dc401 448001681a00000109283ce6e50f0000 0600e200ff0000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 000000000000000000000000000000ca 2 DPMS: flags: enum enums: On=0 Standby=1 Suspend=2 Off=3 value: 0 5 link-status: flags: enum enums: Good=0 Bad=1 value: 0 6 non-desktop: flags: immutable range values: 0 1 value: 0 4 TILE: flags: immutable blob blobs: value: 40 0 disconnected HDMI-A-2 0x0 0 39 props: 1 EDID: flags: immutable blob blobs: value: 2 DPMS: flags: enum enums: On=0 Standby=1 Suspend=2 Off=3 value: 0 5 link-status: flags: enum enums: Good=0 Bad=1 value: 0 6 non-desktop: flags: immutable range values: 0 1 value: 0 4 TILE: flags: immutable blob blobs: value: 41 max bpc: flags: range values: 8 16 value: 0 CRTCs: id fb pos size 33 46 (0,0) (1280x720) #0 1280x720 60.00 1280 1390 1430 1650 720 725 730 750 74250 flags: phsync, pvsync; type: driver props: 24 VRR_ENABLED: flags: range values: 0 1 value: 0 36 0 (0,0) (0x0) #0 nan 0 0 0 0 0 0 0 0 0 flags: ; type: props: 24 VRR_ENABLED: flags: range values: 0 1 value: 0 Planes: id crtc fb CRTC x,y x,y gamma size possible crtcs 31 33 46 0,0 0,0 0 0x00000001 formats: XR24 AR24 RG16 XB24 AB24 AR15 XR15 props: 8 type: flags: immutable enum enums: Overlay=0 Primary=1 Cursor=2 value: 1 32 zpos: flags: immutable range values: 0 0 value: 0 34 0 0 0,0 0,0 0 0x00000002 formats: XR24 AR24 RG16 XB24 AB24 AR15 XR15 props: 8 type: flags: immutable enum enums: Overlay=0 Primary=1 Cursor=2 value: 1 35 zpos: flags: immutable range values: 0 0 value: 0 Frame buffers: id size pitch root@desk-mx8mp:~#
The connectors DRM names are: HDMI-A-1 and LVDS-1. The releated device card is:
root@desk-mx8mp:~# ls -la /dev/dri/card* crw-rw---- 1 root video 226, 0 Jul 26 05:52 /dev/dri/card0 crw-rw---- 1 root video 226, 1 Jul 26 05:52 /dev/dri/card1 root@desk-mx8mp:~#
Accessing the peripheral in MITO 8M Mini[edit | edit source]
Linux messages at boot time[edit | edit source]
... ... [ 3.466020] imx-drm 32c00000.bus:display-subsystem: bound imx-lcdif-crtc.0 (ops lcdif_crtc_ops) [ 3.759770] imx-drm 32c00000.bus:display-subsystem: bound imx-lcdif-crtc.0 (ops lcdif_crtc_ops) [ 3.775867] imx-drm 32c00000.bus:display-subsystem: bound 32e10000.mipi_dsi (ops imx_sec_dsim_ops) [ 3.785440] [drm] Initialized imx-drm 1.0.0 20120507 for 32c00000.bus:display-subsystem on minor 1 ... [ 6.341483] imx-drm 32c00000.bus:display-subsystem: [drm] fb0: imx-drmdrmfb frame buffer device ... ...
Additional information[edit | edit source]
HDMI framebuffer can be accessed through the modetest utility accessing the imx-drm DRM device for NXP i.MX SoCs.
Here below an example of MITO 8M Mini configured for HDMI and LVDS outputs:
root@desk-mx8mm:~# modetest -M imx-drm
Encoders:
id crtc type possible crtcs possible clones
34 33 DSI 0x00000001 0x00000001
Connectors:
id encoder status name size (mm) modes encoders
35 34 connected HDMI-A-1 340x190 2 34
modes:
index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot
#0 1280x720 60.00 1280 1390 1430 1650 720 725 730 750 74250 flags: phsync, pvsync; type: driver
#1 1280x720 50.00 1280 1720 1760 1980 720 725 730 750 74250 flags: phsync, pvsync; type: driver
props:
1 EDID:
flags: immutable blob
blobs:
value:
00ffffffffffff002074560100000000
141f010380221378fe6435a5544f9e27
125054bfea0061400101010101010101
010101010101021900a050d015203020
780059c21000001e000000fc00543038
30410a20202020202020000000ff0030
303030303030300a20202020000000fd
00304b545413010a20202020202001c9
020334f1461202030401132309070783
01000067030c001000384467d85dc401
448001681a00000109283ce6e50f0000
0600e200ff0000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
000000000000000000000000000000ca
2 DPMS:
flags: enum
enums: On=0 Standby=1 Suspend=2 Off=3
value: 0
5 link-status:
flags: enum
enums: Good=0 Bad=1
value: 0
6 non-desktop:
flags: immutable range
values: 0 1
value: 0
4 TILE:
flags: immutable blob
blobs:
value:
CRTCs:
id fb pos size
33 39 (0,0) (1280x720)
#0 1280x720 60.00 1280 1390 1430 1650 720 725 730 750 74250 flags: phsync, pvsync; type: driver
props:
24 VRR_ENABLED:
flags: range
values: 0 1
value: 0
Planes:
id crtc fb CRTC x,y x,y gamma size possible crtcs
31 33 39 0,0 0,0 0 0x00000001
formats: XR24 AR24 RG16 XB24 AB24 RX24 RA24 AR15 XR15 AB15 XB15 BG16
props:
8 type:
flags: immutable enum
enums: Overlay=0 Primary=1 Cursor=2
value: 1
32 zpos:
flags: immutable range
values: 0 0
value: 0
Frame buffers:
id size pitch
The connectors DRM names are: HDMI-A-1 and LVDS-1. The releated device card is:
root@desk-mx8mm:~# ls -la /dev/dri/card* crw-rw---- 1 root video 226, 0 Apr 29 00:39 /dev/dri/card0 crw-rw---- 1 root video 226, 1 Apr 29 00:39 /dev/dri/card1
