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OMAPDSS: HDMI4: set regulator voltage to 1.8V

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Set the HDMI vdda regulator voltage to the required 1.8V.

This is required for the case when the regulator in the DT data defines
a range of allowed voltages. In this case it's required to set the
voltage, as otherwise enabling the voltage fails.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen 2013-09-23 18:42:11 +05:30
parent 2c5c4075bc
commit 818a053c54
1 changed files with 10 additions and 0 deletions
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10
drivers/video/fbdev/omap2/dss/hdmi4.c
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@ -83,6 +83,7 @@ static void hdmi_runtime_put(void)
static int hdmi_init_regulator(void)
{
int r;
struct regulator *reg;
if (hdmi.vdda_hdmi_dac_reg != NULL)
@ -96,6 +97,15 @@ static int hdmi_init_regulator(void)
return PTR_ERR(reg);
}
if (regulator_can_change_voltage(reg)) {
r = regulator_set_voltage(reg, 1800000, 1800000);
if (r) {
devm_regulator_put(reg);
DSSWARN("can't set the regulator voltage\n");
return r;
}
}
hdmi.vdda_hdmi_dac_reg = reg;
return 0;