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@xxxxxx>
---
drivers/video/fbdev/omap2/dss/hdmi4.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/video/fbdev/omap2/dss/hdmi4.c b/drivers/video/fbdev/omap2/dss/hdmi4.c
index e15b89d49c28..5c7dd5c06593 100644
--- a/drivers/video/fbdev/omap2/dss/hdmi4.c
+++ b/drivers/video/fbdev/omap2/dss/hdmi4.c
@@ -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;
--
1.9.1
--
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