Tegra DC driver does not call panel_set_backlight, which can result in absence of backlight on device. Fix this by calling panel_set_backlight with BACKLIGHT_DEFAULT just after panel_enable_backlight.
Tested-by: Robert Eckelmann longnoserob@gmail.com # ASUS TF101 T20 Tested-by: Nicolas Chauvet kwizart@gmail.com # Paz00 Tested-by: Andreas Westman Dorcsak hedmoo@yahoo.com # ASUS TF T30 Tested-by: Svyatoslav Ryhel clamor95@gmail.com # LG P895 T30 Signed-off-by: Svyatoslav Ryhel clamor95@gmail.com --- drivers/video/tegra20/tegra-dc.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/video/tegra20/tegra-dc.c b/drivers/video/tegra20/tegra-dc.c index e279650922..00462fa188 100644 --- a/drivers/video/tegra20/tegra-dc.c +++ b/drivers/video/tegra20/tegra-dc.c @@ -4,6 +4,7 @@ */
#include <common.h> +#include <backlight.h> #include <dm.h> #include <fdtdec.h> #include <log.h> @@ -345,6 +346,12 @@ static int tegra_lcd_probe(struct udevice *dev) return ret; }
+ ret = panel_set_backlight(priv->panel, BACKLIGHT_DEFAULT); + if (ret) { + debug("%s: Cannot set backlight to default, ret=%d\n", __func__, ret); + return ret; + } + mmu_set_region_dcache_behaviour(priv->frame_buffer, plat->size, DCACHE_WRITETHROUGH);