Jens Thiele <[email protected]> writes: > as far as i understand maybe i could use a hack to switch the lcd off > (fake dpms) via the sysfs gpio interface for now?
[...] > I think the pins for A20 OLinuXino MICRO + A13-LCD10TS would be: > CONFIG_VIDEO_LCD_POWER="PH8" > CONFIG_VIDEO_LCD_BL_EN="PH7" > CONFIG_VIDEO_LCD_BL_PWM="PB2" > > will read [1] and try with mainline kernel. Does that make sense? Any > side-effects? it somehow works PH8 => 232 echo 232 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio232/direction echo 0 > /sys/class/gpio/gpio232/value => display is off switch on again: echo 1 > /sys/class/gpio/gpio232/value (white flicker as mentioned in the u-boot code) PH7 => 231 echo 231 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio231/direction echo 1 > /sys/class/gpio/gpio231/value nothing happens echo 0 > /sys/class/gpio/gpio231/value nothing happens PB2 => 34 echo 34 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio34/direction echo 1 > /sys/class/gpio/gpio34/value => backlight? is off (can't see a difference to display off) echo 0 > /sys/class/gpio/gpio34/value => display is on (no flicker) lol: cd /sys/class/gpio/gpio34 while true; do echo 0 > value; sleep 0.0001; echo 1 > value; sleep 0.0001; done (depending on your work-load is a unsteady dim or looks like a broken display) -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
