[PATCH 5/5] regulator: axp20x: add support for the AXP323

[Andre Przywara <andre.przywara@arm.com>]

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>
---
 drivers/regulator/axp20x-regulator.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index 3ba76dbd0fb9..e3cc59b82ea6 100644
--- 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;
-- 
2.25.1