IMX6Q Linux MIPI LCD + HDMI

chenjt — Thu, 16 Apr 2020 02:04:33 GMT

i want to use mipi LCD + HDMI

mipi LCD :1024x600

HDMI 1920x1080

device tree:

mxcfb1: fb@0 {
compatible = "fsl,mxc_sdc_fb";
disp_dev = "mipi_dsi";
interface_pix_fmt = "RGB24";
mode_str = "ST7701S-WVGA";
default_bpp = <24>;
int_clk = <0>;
late_init = <0>;
status = "disabled";
};

mxcfb2: fb@1 {
compatible = "fsl,mxc_sdc_fb";
disp_dev = "hdmi";
interface_pix_fmt = "RGB24";
mode_str ="1920x1080M@60";
default_bpp = <24>;
int_clk = <0>;
late_init = <0>;
status = "disabled";
};

&hdmi_core {
ipu_id = <0>;
disp_id = <0>;
status = "okay";
};

&mipi_csi {
status = "okay";
ipu_id = <0>;
csi_id = <1>;
v_channel = <0>;
lanes = <2>;
};

i add

video=mxcfb0:dev=mipi_dsi,ST7701S-WVGA,if=RGB24 video=mxcfb1:dev=hdmi,1920x1080M@60,bpp=32,if=RGB24

into uboot env

------------

the result is MIPI can display but HDMI can't.

cat /sys/class/graphics/fb0/mode ==>> U:1024x600p-60
cat /sys/class/graphics/fb2/mode ==>> U:1920x1080p-60

i use kernel version is : 3.14.52

Has anyone encountered such problem?

it was ipu_id problem ?

Hope someone can help me .

Re: IMX6Q Linux MIPI LCD + HDMI

jimmychan — Fri, 17 Apr 2020 18:46:29 GMT

BSP L3.14.52 is too old. Please try the newer version of BSP.

Re: IMX6Q Linux MIPI LCD + HDMI

wjy — Tue, 27 Jul 2021 01:34:17 GMT

I use kernel version is : 4.1.15.This version also can not realize Mipi and HDMI displayed simultaneously by modifying the device tree.
was ipu_id and disp_id 's problem ?
Is there anything else that needs to be modified?

topic Re: IMX6Q Linux MIPI LCD + HDMI in i.MX Processors

IMX6Q Linux MIPI LCD + HDMI

Re: IMX6Q Linux MIPI LCD + HDMI

Re: IMX6Q Linux MIPI LCD + HDMI