Hi,
We are having custom board based on am437x SoC.
Current issue is we are getting to many repeated error mesages (i.e 20 times) at boot up, causing considerable increase in boot up time.
[ 1.108164] 000: pwm-backlight beeper: beeper supply power not found, using dummy regulator
[ 1.109217] 000: omapdss_dss 4832a000.dss: 4832a000.dss supply vdda_video not found, using dummy regulator
[ 1.112264] 000: pwm-backlight beeper: beeper supply power not found, using dummy regulator
[ 1.114579] 000: omapdss_dss 4832a000.dss: 4832a000.dss supply vdda_video not found, using dummy regulator
[ 1.116630] 000: pwm-backlight beeper: beeper supply power not found, using dummy regulator
[ 1.118665] 000: omapdss_dss 4832a000.dss: 4832a000.dss supply vdda_video not found, using dummy regulator.
dts changes :
lcd_bl: backlight {
compatible = "pwm-backlight";
pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;
brightness-levels = <0 51 53 56 62 75 101 152 255>;
default-brightness-level = <8>;
};
lcd0: display {
//compatible = "osddisplays,osd070t1718-19ts", "panel-dpi";
compatible = "osddisplays,osd0700t4751-19ts ", "panel-dpi";
label = "lcd";
backlight = <&lcd_bl>;
panel-timing {
clock-frequency = <30000000>;
hactive = <800>;
vactive = <480>;
hfront-porch = <210>;
hback-porch = <16>;
hsync-len = <30>;
vback-porch = <10>;
vfront-porch = <22>;
vsync-len = <13>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <1>;
};
port {
lcd_in: endpoint {
remote-endpoint = <&dpi_out>;
};
};
};
pwm4: dmtimer-pwm@4 {
compatible = "ti,omap-dmtimer-pwm";
pinctrl-names = "default";
pinctrl-0 = <&timer4_buzzer_pin>;
ti,timers = <&timer4>;
#pwm-cells = <3>;
};
beeper: beeper {
compatible = "pwm-backlight";
/*compatible = "pwm-beeper";*/
/* 5000 here is the total T represented in micro-seconds */
pwms = <&pwm4 0 500000000 0>;
/* 0 to 255 represent the duty cycle, 255 being the max and 127.5 would be a perfect 50% duty cyc le */
brightness-levels = <0 50 75 100 125 150 175 200 225 255>;
default-brightness-level = <4>;
post-pwm-on-delay-ms = <500>;
pwm-off-delay-ms = <100>;
};
