Hi,
I have a linux kernel which is ported from 5.4 to 6.6 (yocto nanbield). Now trying to bringup MIPI-DSI using SN65DSI83 on the ported 6.6 kernel. Processor used in imx8mp.
But it is failing. The same dts works all fine in 5.4 kernel. Can you pls help me here.
There looks like cyclic dependency between sec_mipi_dsim_bind () and sn65dsi83_probe().
sec_mipi_dsim_bind() fails due to attach failure as the bridge has still not come-up. sn65dsi83_probe() fails as there is no dsi host.
Pls let me know how to avoid this ?. Is there any configuration missing ?. Inform if you need more info.
sn65dsi83_probe logs
[ 21.626617] device_node host_node name mipi_dsi full_name mipi_dsi@32e60000
[ 21.633598] no host
[ 21.633598] no host
[ 21.636227] failed to attach DSI host
imx_sec_dsim_probe logs
[ 21.831150] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c00000/mipi_dsi@32e60000 to encoder DSI-37: -517
[ 21.842856] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 21.851141] Failed to attach bridge: 32e60000.mipi_dsi
[ 21.856300] mipi_dsi_host_unregister
[ 21.859901] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 21.867666] failed to bind sec dsim bridge: -517
[ 21.872851] bind ret -517
[ 21.842856] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e60000.mipi_dsi
[ 21.851141] Failed to attach bridge: 32e60000.mipi_dsi
[ 21.856300] mipi_dsi_host_unregister
[ 21.859901] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridge: -517
[ 21.867666] failed to bind sec dsim bridge: -517
[ 21.872851] bind ret -517
Below is dts file changes
/dts-v1/;
#include <dt-bindings/phy/phy-imx8-pcie.h>
#include <dt-bindings/usb/pd.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/gpio-keys.h>
#include "imx8mp.dtsi"
/ {
model = "NXP i.MX8MPlus GX2 board";
compatible = "fsl,imx8mp-evk", "fsl,imx8mp";
chosen {
stdout-path = &uart2;
};
lvds_backlight: lvds_backlight {
compatible = "pwm-backlight";
pwms = <&pwm2 0 100000>;
status = "okay";
brightness-levels = < 0 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29
30 31 32 33 34 35 36 37 38 39
40 41 42 43 44 45 46 47 48 49
50 51 52 53 54 55 56 57 58 59
60 61 62 63 64 65 66 67 68 69
70 71 72 73 74 75 76 77 78 79
80 81 82 83 84 85 86 87 88 89
90 91 92 93 94 95 96 97 98 99
100>;
default-brightness-level = <80>;
};
lvds0_panel {
compatible = "ampire,am-1280720l2tzqw-00h";
backlight = <&lvds_backlight>;
power-supply = <®_panel_shlr>;
port {
panel_lvds_in: endpoint {
remote-endpoint = <&lvds_out>;
};
};
};
};
&i2c3 {
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c3>;
status = "okay";
dsi_lvds_bridge: sn65dsi83@2d {
compatible = "ti,sn65dsi83";
reg = <0x2d>;
ti,dsi-lanes = <4>;
ti,lvds-format = <1>;
ti,lvds-bpp = <24>;
ti,width-mm = <177>;
ti,height-mm = <100>;
enable-gpios = <&gpio5 27 GPIO_ACTIVE_HIGH>;
interrupt-parent = <&gpio2>;
interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
status = "okay";
display-timings {
lvds {
//clock-frequency = <62500000>;
clock-frequency = <71150000>;
hactive = <1280>;
vactive = <720>;
hback-porch = <120>;
hfront-porch = <120>;
vback-porch = <25>;
vfront-porch = <25>;
//hsync-len = <30>;
hsync-len = <2>;
//vsync-len = <5>;
vsync-len = <1>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <0>;
};
};
port {
dsi_lvds_bridge_in: endpoint {
remote-endpoint = <&mipi_dsi_out>;
};
};
};
&lcdif1 {
status = "okay";
};
&lcdif2 {
status = "okay";
};
&ldb {
status = "okay";
lvds-channel@0 {
fsl,data-mapping = "jeida";
fsl,data-width = <24>;
status = "okay";
port@1 {
reg = <1>;
lvds_out: endpoint {
remote-endpoint = <&panel_lvds_in>;
};
};
};
};
&ldb_phy {
status = "okay";
};
&mipi_dsi {
status = "okay";
port@1 {
mipi_dsi_out: endpoint {
remote-endpoint = <&dsi_lvds_bridge_in>;
attach-bridge;
};
};
};
Below config is enabled in defconfig
CONFIG_DRM_TI_SN65DSI83=y
