diff options
| author | Ken Chang <kenc@nvidia.com> | 2011-07-19 10:29:33 +0800 |
|---|---|---|
| committer | Varun Colbert <vcolbert@nvidia.com> | 2011-07-25 18:47:00 -0700 |
| commit | a36baae3aa112e166584484dec9d6520e5e5cee6 (patch) | |
| tree | 80a5b075e08388820241b0671b9e9f04890e5c72 | |
| parent | 9a4f701f037c95522947950ed0933584b31d5742 (diff) | |
ARM: tegra: ventana: support power sequence timing
below variables should be defined according to power sequence
specifications of panels.
- timing between panel power on to lvds singal enable
- timing between lvds signal enable to backlight enable
bug 818959
(cherry picked from commit 38c3b4bc7fcda70df84bd4a10112cc1468f0a856)
(reviewed on http://git-master/r/41669)
Change-Id: I4844baf2cb680e3e898bcf0907be57f29e0c71da
Reviewed-on: http://git-master/r/42967
Tested-by: Ken Chang <kenc@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: ChihJen Hsu <chhsu@nvidia.com>
| -rw-r--r-- | arch/arm/mach-tegra/board-ventana-panel.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/board-ventana-panel.c b/arch/arm/mach-tegra/board-ventana-panel.c index fab0a1b54881..5ad6acd57472 100644 --- a/arch/arm/mach-tegra/board-ventana-panel.c +++ b/arch/arm/mach-tegra/board-ventana-panel.c @@ -43,6 +43,10 @@ #define ventana_hdmi_hpd TEGRA_GPIO_PN7 #define ventana_hdmi_enb TEGRA_GPIO_PV5 +/*panel power on sequence timing*/ +#define ventana_pnl_to_lvds_ms 0 +#define ventana_lvds_to_bl_ms 200 + static struct regulator *ventana_hdmi_reg = NULL; static struct regulator *ventana_hdmi_pll = NULL; @@ -105,7 +109,9 @@ static int ventana_panel_enable(void) regulator_put(reg); gpio_set_value(ventana_pnl_pwr_enb, 1); + mdelay(ventana_pnl_to_lvds_ms); gpio_set_value(ventana_lvds_shutdown, 1); + mdelay(ventana_lvds_to_bl_ms); return 0; } |