OMAPDSS: HDMI: Add delay to wait for 5V power

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>

diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index 4fbe27191de5ba8214ea676fae00cd2f9371d3eb..96a6e298873ba195affb5b344eb0ee1007d981de 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;