Tool/software:
We are using nxp imx8mp SoM with Yocto Kirkstone Kernel 5.15.75. There is no such driver for TPS61165 in kernel 5.15.75 so we used your published https://git.ti.com/cgit/mlp-open-source/kernel/tree/drivers/video/backlight/tps611xx_bl.c?h=master integrated it in kernel 5.15.75. But when we enable it in in device tree such as
backlight: backlight {
compatible = "ti,tps61165_bl"; // Ensure this matches the driver's compatible string
rfa-enable; // Enables the Request for Acknowledge feature if supported by the driver
es-gpio = <&gpio1 1 GPIO_ACTIVE_HIGH>; // Specify the actual GPIO controller and pin number used for EasyScale communication
status = "okay";
};
panel {
backlight = <&backlight>;
compatible = "lex, LCX07", "panel-lvds";
width-mm = <153>;
height-mm = <92>;
label = "lcx07";
data-mapping = "vesa-24";
status = "okay";
panel-timing {
clock-frequency = <37000000>;
hactive = <800>;
vactive = <480>;
hback-porch = <180>;
hfront-porch = <160>;
vback-porch = <23>;
vfront-porch = <12>;
hsync-len = <35>;
vsync-len = <10>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
};
port {
panel_in: endpoint {
remote-endpoint = <&lvds_out>;
};
};
};
It does not boot and gets in endless loop as:
[ 4.130702] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 4.143483] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 4.154098] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 4.163034] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 4.171007] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 4.183811] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 4.194135] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 4.202774] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 4.210794] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 4.223157] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 4.233751] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 4.242369] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 4.250377] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 4.262522] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 4.272841] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 4.281444] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 4.289413] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
[ 4.301599] dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
[ 4.312269] dwhdmi-imx 32fd8000.hdmi: registered DesignWare HDMI I2C bus driver
[ 4.320929] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)
[ 4.328906] imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)
It boots when I comment the line backlight=&backlight in panel definition. Thanks.
