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OMAPDSS: DSI: set regulator voltage to 1.8V 

Set the DSI vdd 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 2014-03-13 14:33:03 +02:00
parent 818a053c54
commit 02b7a32083
1 changed files with 10 additions and 0 deletions
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10
drivers/video/fbdev/omap2/dss/dsi.c
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@ -1161,6 +1161,7 @@ static int dsi_regulator_init(struct platform_device *dsidev)
{
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
struct regulator *vdds_dsi;
int r;
if (dsi->vdds_dsi_reg != NULL)
return 0;
@ -1173,6 +1174,15 @@ static int dsi_regulator_init(struct platform_device *dsidev)
return PTR_ERR(vdds_dsi);
}
if (regulator_can_change_voltage(vdds_dsi)) {
r = regulator_set_voltage(vdds_dsi, 1800000, 1800000);
if (r) {
devm_regulator_put(vdds_dsi);
DSSERR("can't set the DSI regulator voltage\n");
return r;
}
}
dsi->vdds_dsi_reg = vdds_dsi;
return 0;