Keep PWM backlight on when system suspend

shaojun_wang — Tue, 05 Mar 2013 02:16:27 GMT

Some ebook customer want to keep PWM backlight on when system suspend, the patch is attached.

In the patch, the pwm clock source is set to 32KHz ckil, pwmo frequency is 1KHz.

If want to set pwmo frequency to 2KHz, only need to change mxc_pwm_backlight_data of mx50_rdp.c to

static struct platform_pwm_backlight_data mxc_pwm_backlight_data = {

.pwm_id = 0,

.max_brightness = 15,

.dft_brightness = 8,

.pwm_period_ns = 500000,

};

Original Attachment has been moved to: pwm_always_on_ckil.patch.zip

topic Keep PWM backlight on when system suspend in i.MX Processors