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OMAPDSS: HDMI: Add delay to wait for 5V power
author
Tomi Valkeinen
<tomi.valkeinen@ti.com>
Thu, 26 Apr 2012 11:58:41 +0000
(14:58 +0300)
committer
Tomi Valkeinen
<tomi.valkeinen@ti.com>
Fri, 7 Sep 2012 17:02:03 +0000
(20:02 +0300)
TPD12S015A spec says to wait 300us after setting CT_CP_HPD gpio for the
5V power output to reach 90% of the voltage. This patch adds the delay
to the driver.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
drivers/video/omap2/dss/hdmi.c
patch
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diff --git
a/drivers/video/omap2/dss/hdmi.c
b/drivers/video/omap2/dss/hdmi.c
index
4fbe271
..
96a6e29
100644
(file)
--- a/
drivers/video/omap2/dss/hdmi.c
+++ b/
drivers/video/omap2/dss/hdmi.c
@@
-492,6
+492,9
@@
static int hdmi_power_on(struct omap_dss_device *dssdev)
gpio_set_value(hdmi.ct_cp_hpd_gpio, 1);
gpio_set_value(hdmi.ls_oe_gpio, 1);
+ /* wait 300us after CT_CP_HPD for the 5V power output to reach 90% */
+ udelay(300);
+
r = hdmi_runtime_get();
if (r)
goto err_runtime_get;