diff options
| author | Sean Paul <seanpaul@chromium.org> | 2011-09-21 15:18:45 -0400 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2011-09-27 09:08:21 -0700 |
| commit | fa9e36d6efa9d75a2e8dc79a95d5b3a66d9d000e (patch) | |
| tree | d6290395581adb7c290a9c87800b75ff3c1771a6 /drivers/video | |
| parent | 9cc79dbbd72b2200763357a0c0fdd16190f3ed5e (diff) | |
CHROMIUM: ARM: tegra: asymptote: Fix Asymptote backlight vdd enable line
This line is a NC on Asymptote, but right now we're using the pwm line
(incorrectly). This CL removes the backlight-vdd line from Asymptote
dts and ensures that it's safely ignored if it's missing.
BUG=None
TEST=Built u-boot for Asymptote and flashed it on the device. Ensured that the
backlight still works in u-boot.
Change-Id: Id751b6756bac120e2211b7b32c58f356ff30b767
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: http://gerrit.chromium.org/gerrit/8063
Reviewed-by: Jon Kliegman <kliegs@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/tegra2.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/video/tegra2.c b/drivers/video/tegra2.c index a8d83d3708..429194b047 100644 --- a/drivers/video/tegra2.c +++ b/drivers/video/tegra2.c @@ -152,8 +152,10 @@ static void init_lcd_pwm(struct fdt_lcd *config) if ((long)(config->panel_timings[1] * 1000) > pre_delay) udelay((long)(config->panel_timings[1] * 1000) - pre_delay); - gpio_set_value(config->backlight_vdd.gpio, 1); - udelay(config->panel_timings[2] * 1000); + if (fdt_gpio_isvalid(&config->backlight_vdd)) { + gpio_set_value(config->backlight_vdd.gpio, 1); + udelay(config->panel_timings[2] * 1000); + } /* Enable PWM at 15/16 high, divider 1 */ pwfm_setup(config->pwfm, 1, 0xdf, 1); |