i.MX ProcessorsのトピックRe: How to enable HDMI for IMX6?

How to enable HDMI for IMX6?

yitang — Thu, 19 Jul 2018 11:08:01 GMT

HI fsl, We need to use the HDMI interface. How can we enable HDMI?The following is a schematic diagram of HDMI:

My system is Android 7.0

Re: How to enable HDMI for IMX6?

igorpadykov — Fri, 20 Jul 2018 01:25:30 GMT

Hi yi

for using hdmi please follow i.MX6Q Sabre SD schematic:

Schematics (1)
Design files, including hardware schematics, Gerbers, and OrCAD files.
SABRE Platform for Smart Devices|NXP

and use software on below link:

https://www.nxp.com/support/developer-resources/run-time-software/i.mx-developer-resources/i.mx-6series-i.mx-7series-software-and-development-tool-resources:IMX_SW

Best regards
igor
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Re: How to enable HDMI for IMX6?

yitang — Fri, 20 Jul 2018 02:49:48 GMT

I'm not sure if HDMI CLK has output,please check my DTS, thank you!

arch/arm/boot/dts/imx6qdl.dtsi:

        hdmi_core: hdmi_core@00120000 {
           compatible = "fsl,imx6q-hdmi-core";
           reg = <0x00120000 0x9000>;
           clocks = <&clks IMX6QDL_CLK_HDMI_ISFR>,
                   <&clks IMX6QDL_CLK_HDMI_IAHB>,
                   <&clks IMX6QDL_CLK_HSI_TX>;
           clock-names = "hdmi_isfr", "hdmi_iahb", "mipi_core";
           status = "disabled";
       };

       hdmi_video: hdmi_video@020e0000 {
           compatible = "fsl,imx6q-hdmi-video";
           reg = <0x020e0000 0x1000>;
           reg-names = "hdmi_gpr";
           interrupts = <0 115 IRQ_TYPE_LEVEL_HIGH>;
           clocks = <&clks IMX6QDL_CLK_HDMI_ISFR>,
                   <&clks IMX6QDL_CLK_HDMI_IAHB>,
                   <&clks IMX6QDL_CLK_HSI_TX>;
           clock-names = "hdmi_isfr", "hdmi_iahb", "mipi_core";
           status = "disabled";
       };

       hdmi_audio: hdmi_audio@00120000 {
           compatible = "fsl,imx6q-hdmi-audio";
           clocks = <&clks IMX6QDL_CLK_HDMI_ISFR>,
                   <&clks IMX6QDL_CLK_HDMI_IAHB>,
                   <&clks IMX6QDL_CLK_HSI_TX>;
           clock-names = "hdmi_isfr", "hdmi_iahb", "mipi_core";
           dmas = <&sdma 2 25 0>;
           dma-names = "tx";
           status = "disabled";
       };

       hdmi_cec: hdmi_cec@00120000 {
           compatible = "fsl,imx6q-hdmi-cec";
           interrupts = <0 115 IRQ_TYPE_LEVEL_HIGH>;
           status = "disabled";
       };

arch/arm/boot/dts/imx6qdl-sabresd.dtsi:

aliases {
       mxcfb0 = &mxcfb1;
       mxcfb1 = &mxcfb2;
   };

    mxcfb1: fb@0 {
       compatible = "fsl,mxc_sdc_fb";
       disp_dev = "ldb";
       interface_pix_fmt = "RGB666";
       default_bpp = <16>;
       int_clk = <0>;
       late_init = <0>;
       status = "okay";
   };

   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 = "okay";
   };

&hdmi_cec {
   pinctrl-names = "default";
   pinctrl-0 = <&pinctrl_hdmi_cec>;
   status = "okay";
};

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

&hdmi_video {
   fsl,phy_reg_vlev = <0x0294>;
   fsl,phy_reg_cksymtx = <0x800d>;
   HDMI-supply = <&reg_hdmi>;
   status = "okay";
};

hdmi: edid@50 {
       compatible = "fsl,imx6-hdmi-i2c";
       reg = <0x50>;
   };

pinctrl_hdmi_cec: hdmicecgrp {
           fsl,pins = <
               MX6QDL_PAD_KEY_ROW2__HDMI_TX_CEC_LINE 0x108b0
           >;
       };

       pinctrl_hdmi_hdcp: hdmihdcpgrp {
           fsl,pins = <
               MX6QDL_PAD_KEY_COL3__HDMI_TX_DDC_SCL 0x4001b8b1
               MX6QDL_PAD_KEY_ROW3__HDMI_TX_DDC_SDA 0x4001b8b1
           >;
       };

Please help check the above DTS configuration,thank you!

Re: How to enable HDMI for IMX6?

yitang — Fri, 20 Jul 2018 02:51:21 GMT

I used LVDS + HDMI for display,

the kernel CMD is :Kernel command line: console=ttymxc3,115200 init=/init video=mxcfb0:dev=ldb,bpp=32,if=RGB24,fbpix=RGB32 video=mxcfb1:dev=hdmi,1920x1080M@60,bpp=32 video=mxcfb2:off vmalloc=400M androidboot.console=ttymxc3 consoleblank=0 androidboot.hardware=freescale cma=448M androidboot.selinux=permissive androidboot.dm_verity=disabled loglevel=8 buildvariant=eng
lcd_manufac = desaysv

Re: How to enable HDMI for IMX6?

yitang — Sun, 22 Jul 2018 04:24:23 GMT

when set the kernel command line:

1.video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb1:dev=ldb,bpp=32,if=RGB24,fbpix=RGB32 video=mxcfb2:off

hdmi is output,but lvds is disabled

2.video=mxcfb0:dev=ldb,bpp=32,if=RGB24,fbpix=RGB32 video=mxcfb1:dev=hdmi,1920x1080M@60,bpp=32,if=RGB24,

lvds is output, but hdmi is disabled

now, in my project, we hope lvds and hdmi is also output to the same image, how to config?

Re: How to enable HDMI for IMX6?

igorpadykov — Tue, 24 Jul 2018 08:59:23 GMT

please try with Demo Images from

i.MX Software|NXP

dual lcds usage is described in p.26 "Specifying displays" i.MX_Linux_User's_Guide.pdf

included in

https://www.nxp.com/webapp/Download?colCode=L4.1.15_2.0.0-LINUX-DOCS&Parent_nodeId=1337699481071706174845&Parent_pageTyp…

Best regards
igor