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leds-pwm frequecy support for imx28 bsp linux

Question asked by ask on Oct 9, 2014
Latest reply on Oct 10, 2014 by CarlosCasillas

Hi all,


We have two backlight controls in imx287 processor based. One is for lcd panel and other is for switch buttons.

lcd panel backlight is connected to pwm4(gpio3_29) and switch buttons backlgiht is connected to pwm3(gpio3_28).


Dutycycle of pwm3 is able to cotrol through  drivers/leds/leds-mxs-pwm.c driver after configuring platform data as per my needs. pwm3 output is routed to switch buttons via booster(tps6115), which needs minimum 50 khz frequency. The default frequency which I am getting is 1.47Khz using leds-mxs-pwm driver.

Please let me know how to change the default frequency to 50kz.