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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2013-02-05 12:59:35 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2013-02-05 12:59:35 +0100 |
| commit | 4281b0f06abbe077d23d4b6f0e078cef95d4c091 (patch) | |
| tree | 2a9a338b15f53687a72c8f019962ddaf3cc195db /arch/arm/mach-tegra/board-apalis_t30-panel.c | |
| parent | 9c3a5de99af755b86ef12ca1a9314987aad6073a (diff) | |
apalis_t30: add LVDS GPIO exports
The THine THC63LVD827 LVDS transmitter uses 8 GPIOs for configuration.
This patch configures and exports them for easy user-space access.
Configure LG LP156WF1 15.6 inch full HD dual channel LVDS panel:
root@apalis-t30:~# echo out > /sys/class/gpio/gpio216/direction
root@apalis-t30:~# echo 0 > /sys/class/gpio/gpio216/value
root@apalis-t30:~# echo out > /sys/class/gpio/gpio219/direction
root@apalis-t30:~# echo 1 > /sys/class/gpio/gpio219/value
root@apalis-t30:~# echo out > /sys/class/gpio/gpio220/direction
root@apalis-t30:~# echo 1 > /sys/class/gpio/gpio220/value
root@apalis-t30:~# echo out > /sys/class/gpio/gpio221/direction
root@apalis-t30:~# echo 1 > /sys/class/gpio/gpio221/value
root@apalis-t30:~# echo out > /sys/class/gpio/gpio222/direction
root@apalis-t30:~# echo 1 > /sys/class/gpio/gpio222/value
root@apalis-t30:~# echo out > /sys/class/gpio/gpio223/direction
root@apalis-t30:~# echo 1 > /sys/class/gpio/gpio223/value
root@apalis-t30:~# echo out > /sys/class/gpio/gpio225/direction
root@apalis-t30:~# echo 1 > /sys/class/gpio/gpio225/value
root@apalis-t30:~# echo out > /sys/class/gpio/gpio226/direction
root@apalis-t30:~# echo 1 > /sys/class/gpio/gpio226/value
root@apalis-t30:~# cat /sys/kernel/debug/gpio | grep LVDS
gpio-216 (LVDS: Single/Dual Ch) out lo
gpio-219 (LVDS: 18/24 Bit Mode) out hi
gpio-220 (LVDS: Output Enable ) out hi
gpio-221 (LVDS: Power Down ) out hi
gpio-222 (LVDS: Clock Polarity) out hi
gpio-223 (LVDS: Colour Mapping) out hi
gpio-225 (LVDS: Swing Mode ) out hi
gpio-226 (LVDS: DDRclk Disable) out hi
Diffstat (limited to 'arch/arm/mach-tegra/board-apalis_t30-panel.c')
0 files changed, 0 insertions, 0 deletions