regulator: pca9450: Correct default t_off_deb for PCA9451A/PCA9452

The PMIC PCA9451A and PCA9452 have a default power-off debounce time of
2ms according to their datasheet, while PCA9450A and PCA9450BC use 120us.

Add default_t_off_deb field to struct pca9450 to support per-variant
default configuration when the device tree property is not specified.

Datasheet reference links:
- PCA9451A Rev.2.1: https://www.nxp.com/docs/en/data-sheet/PCA9451A.pdf
- PCA9452 Rev.1.0: https://www.nxp.com/docs/en/data-sheet/PCA9452.pdf

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260618-b4-regulator-opt-v1-1-c43b1f62aaf6@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/pca9450-regulator.c b/drivers/regulator/pca9450-regulator.c
index 45d7dc44c2cd081a4ca570933a6284550f1d1402..c41db70fa052910df816c10853c550399583b832 100644 (file)
--- a/drivers/regulator/pca9450-regulator.c
+++ b/drivers/regulator/pca9450-regulator.c
@@ -44,6 +44,7 @@ struct pca9450 {
        unsigned int rcnt;
        int irq;
        bool sd_vsel_fixed_low;
+       int default_t_off_deb;
 };
 
 static const struct regmap_range pca9450_status_range = {
@@ -1209,7 +1210,7 @@ static int pca9450_of_init(struct pca9450 *pca9450)
 
        ret = of_property_read_u32(i2c->dev.of_node, "nxp,pmic-on-req-off-debounce-us", &val);
        if (ret == -EINVAL)
-               t_off_deb = T_OFF_DEB_120US;
+               t_off_deb = pca9450->default_t_off_deb;
        else if (ret)
                return ret;
        else {
@@ -1304,21 +1305,25 @@ static int pca9450_i2c_probe(struct i2c_client *i2c)
        case PCA9450_TYPE_PCA9450A:
                regulator_desc = pca9450a_regulators;
                pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators);
+               pca9450->default_t_off_deb = T_OFF_DEB_120US;
                type_name = "pca9450a";
                break;
        case PCA9450_TYPE_PCA9450BC:
                regulator_desc = pca9450bc_regulators;
                pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);
+               pca9450->default_t_off_deb = T_OFF_DEB_120US;
                type_name = "pca9450bc";
                break;
        case PCA9450_TYPE_PCA9451A:
                regulator_desc = pca9451a_regulators;
                pca9450->rcnt = ARRAY_SIZE(pca9451a_regulators);
+               pca9450->default_t_off_deb = T_OFF_DEB_2MS;
                type_name = "pca9451a";
                break;
        case PCA9450_TYPE_PCA9452:
                regulator_desc = pca9451a_regulators;
                pca9450->rcnt = ARRAY_SIZE(pca9451a_regulators);
+               pca9450->default_t_off_deb = T_OFF_DEB_2MS;
                type_name = "pca9452";
                break;
        default: