diff options
| author | Hyongbin Kim <hyongbink@nvidia.com> | 2013-09-12 17:42:55 +0900 |
|---|---|---|
| committer | Gabby Lee <galee@nvidia.com> | 2013-10-14 18:45:58 -0700 |
| commit | 4fb2530fb5817ec9a752af5490eb01ba378e1a2a (patch) | |
| tree | a7b37c30cb338eeb06cb6cddb782bdfbe4fe52c2 | |
| parent | 0d86d69ce00e6b93335cf56943a4237e5c7594ec (diff) | |
video: tegra: Remove delay if power is enabled
When first boot, vdd_lcd_bl_en is already enabled.
vdd_lcd_bl_en doesn't share power rail, we can remove 200ms delay.
Bug 1367030
Change-Id: I4f9d4900c59a858ae34224cba42791f36363851c
Signed-off-by: Hyongbin Kim <hyongbink@nvidia.com>
Reviewed-on: http://git-master/r/273602
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Gabby Lee <galee@nvidia.com>
| -rw-r--r-- | drivers/video/tegra/of_lcd_device_data/tegratab_lcd_dev_data.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/video/tegra/of_lcd_device_data/tegratab_lcd_dev_data.c b/drivers/video/tegra/of_lcd_device_data/tegratab_lcd_dev_data.c index f8c2669903cc..18b73fb59244 100644 --- a/drivers/video/tegra/of_lcd_device_data/tegratab_lcd_dev_data.c +++ b/drivers/video/tegra/of_lcd_device_data/tegratab_lcd_dev_data.c @@ -176,12 +176,15 @@ static int lgd_wxga_7_0_postpoweron(void) { int err = 0; - /* - * MIPI to VLED > 200ms, based on the spec - * init_cmd cares 20ms delay already. - */ - msleep(180); if (vdd_lcd_bl_en) { + /*If rail is already enabled, we don't need delay*/ + /* + * MIPI to VLED > 200ms, based on the spec + * init_cmd cares 20ms delay already. + */ + if (!regulator_is_enabled(vdd_lcd_bl_en)) + msleep(180); + err = regulator_enable(vdd_lcd_bl_en); if (err < 0) { pr_err("%s: vdd_lcd_bl_en en failed\n", __func__); |