diff options
| author | Jonas Karlman <jonas@kwiboo.se> | 2024-10-17 20:00:26 +0000 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2024-10-26 10:46:48 +0800 |
| commit | 6e751eed97f910b60de10b20f3932e1bffa81ccc (patch) | |
| tree | c70c3f7991623ad141f9db655528b4cbb27e650b | |
| parent | bcbfd1bb373e11838f117d193a4590d6af0ba2ae (diff) | |
adc: rockchip-saradc: Use vdd-microvolts prop as fallback
Change to use vdd-microvolts prop value as voltage reference when the
supply regulator is missing or when DM_REGULATOR=n is used.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
| -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; |