IMX6_ST7701s_MIPI_DSI_Display

[svnatraj]

Hi 

Am trying to Enable MIPI DSI display driver imx6 with linux kernel 4.1.15 

i followed the NXP community to modify the following part in device tree file

aliases {

     mxcfb0 = &mxcfb1;

};

reg_mipi_dsi_pwr_on: mipi_dsi_pwr_on {

     compatible = "regulator-fixed";

     regulator-name = "mipi_dsi_pwr_on";

     gpio = <&gpio6 14 0>;

     enable-active-high;

};

mipi_dsi_reset: mipi-dsi-reset {
compatible = "gpio-reset";
reset-gpios = <&gpio7 12 1>; //GPIO_ACTIVE_LOW
reset-delay-us = <50>;
#reset-cells = <0>;
};

&mipi_dsi {
dev_id = <0>;
disp_id = <0>;
lcd_panel = "TRULY-WVGA";
disp-power-on-supply = <&reg_mipi_dsi_pwr_on>;
resets = <&mipi_dsi_reset>;
status = "okay";
};

mxcfb1: fb@0 {

     compatible = "fsl,mxc_sdc_fb";

     disp_dev = "mipi_dsi";

     interface_pix_fmt = "RGB565";

     mode_str ="TRULY-WVGA";

     default_bpp = <24>;

     int_clk = <0>;

     late_init = <0>;

     status = "okay";

};

and am using LCD panel driver ST7701s..320X480 

and  i got the following three line of debug message regarding MIPI DSI

and nothing..

21e0000.mipi supply disp-power-on not found, using dummy regulator
mxc_mipi_dsi 21e0000.mipi: i.MX MIPI DSI driver probed
mxc_mipi_dsi mipi-phy: failed to get platform resource 0
MIPI DSI driver module loaded
mxc_sdc_fb fb@1: can not get alias id

[svnatraj]

Hi  Igor

Thank you for your kind reply..

am using custom board. anyway never mind the ST7701 ...now just i want to enable   hx8369 lcd driver through

 mxcfb_hx8369_wvga.c 
 fb_videomode truly_lcd_modedb[],

mipid_hx8369_lcd_setup()

that driver come with BSP.

i never get any debug message from mipi_hx8369_lcd_setup()

function.. just i expect  kernel debug message " LCD panel not Matched" something like that because

am using different LCD controller.. i guess mipi_hx8369_lcd_setup() function never called.

i receive only following debug message from kernel log

21e0000.mipi supply disp-power-on not found, using dummy regulator
mxc_mipi_dsi 21e0000.mipi: i.MX MIPI DSI driver probed
mxc_mipi_dsi mipi-phy: failed to get platform resource 0
MIPI DSI driver module loaded
mxc_sdc_fb fb@1: can not get alias id

i added the driver part  

and edited KConfig...Makefile and device tree file

[igorpadykov]

Hi Natarajan

one can try to adjust timings and initialization for specific lcd using

description in sect.6.4.2.2 Source Code Structure attached Linux Manual,

in driver: linux/drivers/video/fbdev/mxc/mxcfb_hx8369_wvga.c adjust
 fb_videomode truly_lcd_modedb[], mipid_hx8369_lcd_setup()

mxcfb_hx8369_wvga.c\mxc\fbdev\video\drivers - linux-imx - i.MX Linux kernel 

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------