RGB Parallel Interface

deepikakumari — Tue, 12 Jul 2016 12:34:02 GMT

Unable to display the data on RGB parallel new haven ( )display on i.MX6solo Custom board

These are the modifications in DTSI file the same is attached for your reference

/* For Display Interface*/

mxcfb1: fb@0 {

compatible = "fsl,mxc_sdc_fb";

disp_dev = "lcd";

interface_pix_fmt = "RGB24";

mode_str ="WVGA";

default_bpp = <24>;

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 = "disabled";

};

mxcfb3: fb@2 {

compatible = "fsl,mxc_sdc_fb";

disp_dev = "lcd";

interface_pix_fmt = "RGB24";

mode_str ="WVGA";

default_bpp = <32>;//24

int_clk = <0>;

late_init = <0>;

status = "disabled";

};

mxcfb4: fb@3 {

compatible = "fsl,mxc_sdc_fb";

disp_dev = "ldb";

interface_pix_fmt = "RGB666";

default_bpp = <16>;

int_clk = <0>;

late_init = <0>;

status = "disabled";

};

lcd@0 {

compatible = "fsl,lcd";

ipu_id = <0>;

disp_id = <0>;

default_ifmt = "RGB24";

pinctrl-names = "default";

//lcd-supply =<&reg_lcd_3v3> ;

VDDIO-supply = <&reg_3p3v>;

pinctrl-0 = <&pinctrl_ipu1>;

reset-gpios = <&gpio3 31 GPIO_ACTIVE_LOW>;

status = "okay";

};

/* For Display Interafce */

pinctrl_ipu1: ipu1grp {

fsl,pins = <

MX6QDL_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK 0x00

//MX6QDL_PAD_CSI0_DATA_EN__IPU1_CSI0_DATA_EN 0x1b0b0 //Display Data Enable Pin

//MX6QDL_PAD_CSI0_DATA_EN__GPIO5_IO20 0x80000000 //Display Data Enable Pin

MX6QDL_PAD_DI0_PIN15__IPU1_DI0_PIN15 0x10

MX6QDL_PAD_EIM_D31__GPIO3_IO31 0x80000000

MX6QDL_PAD_DI0_PIN2__IPU1_DI0_PIN02 0x10

MX6QDL_PAD_DI0_PIN3__IPU1_DI0_PIN03 0x10

MX6QDL_PAD_DI0_PIN4__IPU1_DI0_PIN04 0x80000000

MX6QDL_PAD_DISP0_DAT0__IPU1_DISP0_DATA00 0x10

MX6QDL_PAD_DISP0_DAT1__IPU1_DISP0_DATA01 0x10

MX6QDL_PAD_DISP0_DAT2__IPU1_DISP0_DATA02 0x10

MX6QDL_PAD_DISP0_DAT3__IPU1_DISP0_DATA03 0x10

MX6QDL_PAD_DISP0_DAT4__IPU1_DISP0_DATA04 0x10

MX6QDL_PAD_DISP0_DAT5__IPU1_DISP0_DATA05 0x10

MX6QDL_PAD_DISP0_DAT6__IPU1_DISP0_DATA06 0x10

MX6QDL_PAD_DISP0_DAT7__IPU1_DISP0_DATA07 0x10

MX6QDL_PAD_DISP0_DAT8__IPU1_DISP0_DATA08 0x10

MX6QDL_PAD_DISP0_DAT9__IPU1_DISP0_DATA09 0x10

MX6QDL_PAD_DISP0_DAT10__IPU1_DISP0_DATA10 0x10

MX6QDL_PAD_DISP0_DAT11__IPU1_DISP0_DATA11 0x10

MX6QDL_PAD_DISP0_DAT12__IPU1_DISP0_DATA12 0x10

MX6QDL_PAD_DISP0_DAT13__IPU1_DISP0_DATA13 0x10

MX6QDL_PAD_DISP0_DAT14__IPU1_DISP0_DATA14 0x10

MX6QDL_PAD_DISP0_DAT15__IPU1_DISP0_DATA15 0x10

MX6QDL_PAD_DISP0_DAT16__IPU1_DISP0_DATA16 0x10

MX6QDL_PAD_DISP0_DAT17__IPU1_DISP0_DATA17 0x10

MX6QDL_PAD_DISP0_DAT18__IPU1_DISP0_DATA18 0x10

MX6QDL_PAD_DISP0_DAT19__IPU1_DISP0_DATA19 0x10

MX6QDL_PAD_DISP0_DAT20__IPU1_DISP0_DATA20 0x10

MX6QDL_PAD_DISP0_DAT21__IPU1_DISP0_DATA21 0x10

MX6QDL_PAD_DISP0_DAT22__IPU1_DISP0_DATA22 0x10

MX6QDL_PAD_DISP0_DAT23__IPU1_DISP0_DATA23 0x10

};

Used the driver file is : mxc_lcdif.c is attached for your reference

On display we are able to see the RGB lines patterns only ,what could be the issue.

kindly Help Us , we are reaching the deadlines.

Original Attachment has been moved to: mxc_lcdif.c.zip

Re: RGB Parallel Interface

igorpadykov — Wed, 13 Jul 2016 00:32:26 GMT

Hi Deepika

for new lcd its timings should be provided, as for example in:

lcdif1 :

http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/arch/arm/boot/dts/imx6sx-14x14-arm2.dts?h=imx_4.1.15_1.0.0_ga

Also one can look at useful configuration examples for different lcds :

https://boundarydevices.com/configuring-i-mx6-machines-different-screens-nitrogen6x-sabre-lite/

Best regards

igor

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Re: RGB Parallel Interface

deepikakumari — Thu, 14 Jul 2016 09:53:17 GMT

Hi Igor,

Tried in the same manner as u have given the example link but no progress . Any other way to sort out this .

Thank you.

Re: RGB Parallel Interface

deepikakumari — Thu, 14 Jul 2016 10:03:41 GMT

PART No of LCD is : NHD-7.0-800480EF-ATXL#-CTP,

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