diff options
| -rw-r--r-- | drivers/adc/rockchip-saradc.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/adc/rockchip-saradc.c b/drivers/adc/rockchip-saradc.c index f6832ab3073..7cf9735f60d 100644 --- a/drivers/adc/rockchip-saradc.c +++ b/drivers/adc/rockchip-saradc.c @@ -241,7 +241,7 @@ int rockchip_saradc_probe(struct udevice *dev) { struct adc_uclass_plat *uc_pdata = dev_get_uclass_plat(dev); struct rockchip_saradc_priv *priv = dev_get_priv(dev); - struct udevice *vref; + struct udevice *vref = NULL; struct clk clk; int vref_uv; int ret; @@ -259,7 +259,7 @@ int rockchip_saradc_probe(struct udevice *dev) priv->active_channel = -1; ret = device_get_supply_regulator(dev, "vref-supply", &vref); - if (ret) { + if (ret && uc_pdata->vdd_microvolts <= 0) { printf("can't get vref-supply: %d\n", ret); return ret; } @@ -267,7 +267,10 @@ int rockchip_saradc_probe(struct udevice *dev) if (priv->reset) rockchip_saradc_reset_controller(priv->reset); - vref_uv = regulator_get_value(vref); + if (vref) + vref_uv = regulator_get_value(vref); + else + vref_uv = uc_pdata->vdd_microvolts; if (vref_uv < 0) { printf("can't get vref-supply value: %d\n", vref_uv); return vref_uv; |