SN65DSI86 bridge connection issue with MIPI_DSI

[Cyriactoms]

Mipi dsi not able to attach the sn65dsi bridge. The driver is loading fine but it gives an error like this   [ 7.223851] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -19
[ 7.240955] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 7.249236] DSIM_DEBUG: sec_mipi_dsim_bind() returned -19
[ 7.261771] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -19
[ 7.269436] imx-drm display-subsystem: bound 32e60000.mipi_dsi (ops imx_sec_dsim_ops)

vcc_1v2: regulator-vcc-1v2 {

compatible = "regulator-fixed";

regulator-name = "vcc_1v2";

regulator-min-microvolt = <1200000>;

regulator-max-microvolt = <1200000>;

regulator-always-on;

regulator-boot-on;

};

vcc_1v8: regulator-vcc-1v8 {

compatible = "regulator-fixed";

regulator-name = "vcc_1v8";

regulator-min-microvolt = <1800000>;

regulator-max-microvolt = <1800000>;

regulator-always-on;

regulator-boot-on;

};

panel_edp: panel {

compatible = "lg,lp079qx1-sp0v";

pinctrl-names = "default";

pinctrl-0 = <&pinctrl_mipi_dsi_en>;

status = "okay";

port {

panel_in: endpoint {

remote-endpoint = <&edp_bridge_out>;

};

};

display-timings {

native-mode = <&timing_1280x800>;

timing_1280x800: 1280x800 {

clock-frequency = <77000000>; /* 77.00 MHz */

hactive = <1280>;

vactive = <800>;

hfront-porch = <160>;

hsync-len = <32>;

hback-porch = <40>; /* Calculated: 232 - 160 - 32 */

vfront-porch = <20>;

vsync-len = <6>;

vback-porch = <30>; /* Calculated: 56 - 20 - 6 */

};

};

};

refclk: input_refclk{

compatible = "fixed-clock";

#clock-cells = <0>;

clock-frequency = <19200000>;

clock-output-names = "refclk";

};

};

&lcdif1 {

status = "okay";

lcdif1_disp: port@0 {

reg = <0>;

lcdif_to_dsim_1: endpoint {

remote-endpoint = <&dsim_from_lcdif_2>;

};

};

};

&mipi_dsi {

status = "okay";

ports {

#address-cells = <1>;

#size-cells = <0>;

port@0 {

reg = <0>;

dsim_from_lcdif_2: endpoint {

remote-endpoint = <&lcdif_to_dsim_1>;

};

};

port@1 {

reg = <1>;

dsim_to_edpbridge: endpoint {

remote-endpoint = <&edp_bridge_in>;

};

};

};

};

&i2c3{

clock-frequency = <400000>;

pinctrl-names = "default";

pinctrl-0 = <&pinctrl_i2c3>;

status = "okay";

sn65dsi86_bridge: sn65dsi86@2c{

compatible = "ti,sn65dsi86";

reg = <0x2c>;

status ="okay";

pinctrl-names = "default";

pinctrl-0 = <&pinctrl_dp>;

enable-gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;

vccio-supply = <&vcc_1v8>;

vpll-supply = <&vcc_1v8>;

vcca-supply = <&vcc_1v2>;

vcc-supply = <&vcc_1v2>;

clock-names = "refclk";

clocks = <&refclk>;

ports{

#address-cells = <1>;

#size-cells = <0>;

port@0 {

reg = <0>;

edp_bridge_in: endpoint {

remote-endpoint = <&dsim_to_edpbridge>;

data-lanes = <0 1 2 3>;

};

};

port@1 {

reg = <1>;

edp_bridge_out: endpoint {

remote-endpoint = <&panel_in>;

data-lanes = <0 1 2 3>;

};

};

};

};

Does it work with i2c when i tried i2cdump its giving xx values for every register and also

cat /sys/kernel/debug/regmap/2-002c/registers giving xx values is this the cause for the mipi dsi to bind

[Bio_TICFSL]

Hello,

What the regulator do? if marked the fails on regulator but I can not tested since we have no SN65DSI at hand, you should try to change this.

Regards