IMX8X LVDS show nothing

[shalanyang]

                                                             IMX8X LVDS 

Hi everyone,

    we have meter program use imx8x, we use two lvds output to the LCD, but the result is show nothing,my LCD and  lvds config as follow, Please help me check it why show nothing? TKS!

&gpio0 {
/*TFT_PWR_EN*/
lvds0_panel_pwr_en {
gpio-hog;
gpios = <11 0>;
output-high;
};
/*SOC_OFF_RDY*/
soc_off_rdy {
gpio-hog;
gpios = <27 0>;
output-high;
};
};

&gpio1 {
/*LCD_RST*/
lvds0_panel_reset {
gpio-hog;
gpios = <26 0>;
output-high;
};
/*LCD_STBYB*/
lvds0_panel_stbyb {
gpio-hog;
gpios = <28 0>;
output-high;
};
/*BL_PWM for temporory*/
lvds0_panel_pwm {
gpio-hog;
gpios = <27 0>;
output-high;
};

/* peripheral 3.3v power on*/
peri_3v3_sw {
gpio-hog;
gpios = <13 0>;
output-high;
status="okay";
};

/* peripheral 1.8v power on*/
peri_1v8_sw {
gpio-hog;
gpios = <14 0>;
output-high;
status="okay";
};
};

pinctrl_i2c0_mipi_lvds0: mipi_lvds0_i2c0_grp {
fsl,pins = <
SC_P_MIPI_DSI0_I2C0_SCL_MIPI_DSI0_I2C0_SCL 0xc6000020
SC_P_MIPI_DSI0_I2C0_SDA_MIPI_DSI0_I2C0_SDA 0xc6000020
>;
};

pinctrl_i2c0_mipi_lvds1: mipi_lvds1_i2c0_grp {
fsl,pins = <
SC_P_MIPI_DSI1_I2C0_SCL_MIPI_DSI1_I2C0_SCL 0xc6000020
SC_P_MIPI_DSI1_I2C0_SDA_MIPI_DSI1_I2C0_SDA 0xc6000020
>;
};

&ldb1_phy {
status = "okay";
};

&ldb1 {
/*SC_P_USDHC1_WP_LSIO_GPIO4_IO21 0x06000021*/
/*wp-gpios = <&gpio4 21 GPIO_ACTIVE_HIGH>;*/
/*enable-active-high;*/
/*split-mode;*/
split-mode;
status = "okay";

lvds-channel@0 {
fsl,data-mapping = "spwg";/*jeida*/
fsl,data-width = <24>;
split-mode;
primary;
status = "okay";

display-timings {
native-mode = <&t_lcd>;
t_lcd: t_lcd_default {
clock-frequency = <92729970>;
hactive = <1920>;
vactive = <720>;
hback-porch = <40>;
hfront-porch = <40>;
vback-porch = <10>;
vfront-porch = <3>;
hsync-len = <40>;
vsync-len = <10>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <0>;
};
};
};
lvds-channel@1 {
fsl,data-mapping = "spwg";/*jeida*/
fsl,data-width = <24>;
split-mode;
primary;
status = "okay";

display-timings {
native-mode = <&t_lcd1>;
t_lcd1: t_lcd_default {
clock-frequency = <92729970>;
hactive = <1920>;
vactive = <720>;
hback-porch = <40>;
hfront-porch = <40>;
vback-porch = <10>;
vfront-porch = <3>;
hsync-len = <40>;
vsync-len = <10>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <0>;
};
};
};
};

[baijinlong]

hi， is it convenient to send me a copy of this patch package?

[zhetomg]

hi， is it convenient to send me a copy of this patch package?

[shalanyang]

TKS ,we had solve it, NXP had give us pacth

[zhetomg]

??

[zhetomg]

Yang, is it convenient to send me a copy of this patch package? I also want to test my LVDS screen，E-mail: 1661986565@qq.com, thank you!

[shalanyang]

I config the dts file as follow,can show the logo,but some time show two logs,the show picture see the attach 

&ldb1_phy {
status = "okay";
};

&ldb1 {
/*SC_P_USDHC1_WP_LSIO_GPIO4_IO21 0x06000021*/
/*wp-gpios = <&gpio4 21 GPIO_ACTIVE_HIGH>;*/
/*enable-active-high;*/

/*fsl,dual-channel;*/
status = "okay";

lvds-channel@0 {
fsl,data-mapping = "spwg";/*jeida*/
fsl,data-width = <24>;
split-mode;
status = "okay";

display-timings {
native-mode = <&t_lcd>;
t_lcd: t_lcd_default {
clock-frequency = <92729970>;
hactive = <1920>;
vactive = <720>;
hback-porch = <40>;
hfront-porch = <40>;
vback-porch = <10>;
vfront-porch = <3>;
hsync-len = <40>;
vsync-len = <10>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <0>;
};
};
};
};

&ldb2_phy {
status = "okay";
};

&ldb2 {
/*SC_P_USDHC1_WP_LSIO_GPIO4_IO21 0x06000021*/
/*wp-gpios = <&gpio4 21 GPIO_ACTIVE_HIGH>;*/
/*enable-active-high;*/

/*fsl,dual-channel;*/
status = "okay";

lvds-channel@0 {
fsl,data-mapping = "spwg";/*jeida*/
fsl,data-width = <24>;
split-mode;
status = "okay";

display-timings {
native-mode = <&t_lcd1>;
t_lcd1: t_lcd_default {
clock-frequency = <92729970>;
hactive = <1920>;
vactive = <720>;
hback-porch = <40>;
hfront-porch = <40>;
vback-porch = <10>;
vfront-porch = <3>;
hsync-len = <40>;
vsync-len = <10>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <0>;
};
};
};
};

[joanxie]

The mapping is as follows -
DC0-0 -> MIPI-DSI0 / HDMI / ISI loopback
DC0-1 -> LVDS0 / HDMI
DC1-0 -> MIPI-DSI1
DC1-1 -> LVDS1 / ISI loopback

pls check if you connect correctly and  you use split mode for the dual lvds? did you enable dual channel for the picture?