topic iMX6 Backlight Brightness Configuration in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/iMX6-Backlight-Brightness-Configuration/m-p/627933#M95300 <HTML><HEAD></HEAD><BODY><P>I am attempting to adjust the backlight configuration on my iMX6 device. As of ow I can control the back light via sysfs terminal window at /sys/class/backlight/brightness. The picture below shows the backlight configuration. Note that I changed status = disabled to "okay" in order to enable the driver.&nbsp;</P><P><span class="lia-inline-image-display-wrapper" image-alt="backlight.PNG"><img src="https://community.nxp.com/t5/image/serverpage/image-id/15817i3656293FC2E13720/image-size/large?v=v2&amp;px=999" role="button" title="backlight.PNG" alt="backlight.PNG" /></span></P><P></P><P>My question involves changing the brightness levels and max_brightness configuration. I have modified the brightness array to add the additional corresponding values that are needed for my application. The array is now a total of 16 indices. The issue is that when I go to set the brightness I still can only set values from 0-7. The max_brightness file located @ /sys/class/backlight/backlightXX/max_brightness will not allow me set the value above 7 even though I have adjusted the brightness array size. Does anyone know how to fix this?</P></BODY></HTML> Tue, 28 Mar 2017 20:09:05 GMT kevinmahlie 2017-03-28T20:09:05Z iMX6 Backlight Brightness Configuration https://community.nxp.com/t5/i-MX-Processors/iMX6-Backlight-Brightness-Configuration/m-p/627933#M95300 <HTML><HEAD></HEAD><BODY><P>I am attempting to adjust the backlight configuration on my iMX6 device. As of ow I can control the back light via sysfs terminal window at /sys/class/backlight/brightness. The picture below shows the backlight configuration. Note that I changed status = disabled to "okay" in order to enable the driver.&nbsp;</P><P><span class="lia-inline-image-display-wrapper" image-alt="backlight.PNG"><img src="https://community.nxp.com/t5/image/serverpage/image-id/15817i3656293FC2E13720/image-size/large?v=v2&amp;px=999" role="button" title="backlight.PNG" alt="backlight.PNG" /></span></P><P></P><P>My question involves changing the brightness levels and max_brightness configuration. I have modified the brightness array to add the additional corresponding values that are needed for my application. The array is now a total of 16 indices. The issue is that when I go to set the brightness I still can only set values from 0-7. The max_brightness file located @ /sys/class/backlight/backlightXX/max_brightness will not allow me set the value above 7 even though I have adjusted the brightness array size. Does anyone know how to fix this?</P></BODY></HTML> Tue, 28 Mar 2017 20:09:05 GMT https://community.nxp.com/t5/i-MX-Processors/iMX6-Backlight-Brightness-Configuration/m-p/627933#M95300 kevinmahlie 2017-03-28T20:09:05Z Re: iMX6 Backlight Brightness Configuration https://community.nxp.com/t5/i-MX-Processors/iMX6-Backlight-Brightness-Configuration/m-p/1707241#M211027 <P>这个PWM的，我的backlight里咋没有相关的设备呢</P> Fri, 18 Aug 2023 05:46:40 GMT https://community.nxp.com/t5/i-MX-Processors/iMX6-Backlight-Brightness-Configuration/m-p/1707241#M211027 wanbenzhou 2023-08-18T05:46:40Z