backlight does not work in Android

pfsang — Thu, 03 Jul 2014 11:15:22 GMT

hi, ALL

i encountered a problem for backlight.

the Backlight Brightness pin is pwm3 that correspond to SD4_DAT1 pad on my customer board.

i configured SD4_DAT1 pad to MX6Q_PAD_SD4_DAT1__PWM3_PWMO。

the platform_pwm_backlight_data is like this:

------------------------------------------------------------------------------------------------

static struct platform_pwm_backlight_data mx6_pwm_backlight_data = {

.pwm_id = 2,

.max_brightness = 248,

.dft_brightness = 128,

.pwm_period_ns = 50000,

};

-------------------------------------------------------------------------------------

and add the following code in boad init.

imx6q_add_mxc_pwm(2);

imx6q_add_mxc_pwm_backlight(2, &mx6_pwm_backlight_data);

but when i operated the Brightness in android setting, it seems not work.

Do anyone know what's missing or what's wrong?

Re: backlight does not work in Android

pfsang — Fri, 04 Jul 2014 03:45:37 GMT

hi, all

i have resolved the issue by setting init.rc.

peter

alejandrolozan1 — Mon, 07 Jul 2014 15:53:05 GMT

Hi,

Thanks for sharing your solution!!

Best Regards,

Alejandro