regulator: axp20x: add support for the AXP323

The X-Powers AXP323 is a very close sibling of the AXP313A. The only
difference seems to be the ability to dual-phase the first two DC/DC
converters.

Place the new AXP323 ID next to the existing AXP313A checks, to let
them share most code.
The only difference is the poly-phase detection code, which gets
extended to check the respective bit in a newly used register.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241007001408.27249-6-andre.przywara@arm.com
Signed-off-by: Lee Jones <lee@kernel.org>

diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index 3ba76db..e3cc59b 100644 (file)
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -1341,6 +1341,7 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
                step = 150;
                break;
        case AXP313A_ID:
+       case AXP323_ID:
        case AXP717_ID:
        case AXP15060_ID:
                /* The DCDC PWM frequency seems to be fixed to 3 MHz. */
@@ -1527,6 +1528,15 @@ static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
                }
                break;
 
+       case AXP323_ID:
+               regmap_read(axp20x->regmap, AXP323_DCDC_MODE_CTRL2, &reg);
+
+               switch (id) {
+               case AXP313A_DCDC2:
+                       return !!(reg & BIT(1));
+               }
+               break;
+
        default:
                return false;
        }
@@ -1565,6 +1575,7 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
                                                  "x-powers,drive-vbus-en");
                break;
        case AXP313A_ID:
+       case AXP323_ID:
                regulators = axp313a_regulators;
                nregulators = AXP313A_REG_ID_MAX;
                break;