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power: regulator: add AXP318W support

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The PMIC is also known as AXP819 in vendor pmu code

For DCDC6, 8, 9, the underlying hardware support more than two levels
voltage step tuning, but for now only first two levels are implemented
in this driver, hence highest voltage will be limited at seccond level.
It actual meets board requirement in current design, and we've verified
it in Radxa Cubie A7A board.

Following are detail explanation of voltage tuning stpes for those DCDCs:

DCDC | voltage range  | units | steps | implemented
 6   | 0.5   -  1.2   | 10 mV | 71    | Y
 .   | 1.22  -  1.54  | 20 mV | 17    | Y
 .   | 1.8   -  2.4   | 20 mV | 31    | N
 .   | 2.44  -  2.76  | 40 mV | 9     | N
 --------------------------------------------------
 8/9 | 0.5   -  1.2   | 10 mV | 71    | Y
 .   | 1.22  -  1.84  | 20 mV | 32    | Y
 .   | 1.9   -  3.4   | 100mV | 16    | N

Signed-off-by: Yixun Lan <dlan@gentoo.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Yixun Lan
2026-01-13 12:01:55 +08:00
committed by Andre Przywara
parent eb7390797d
commit 71f0793275
3 changed files with 52 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/power/pmic/axp.c
View File

@@ -95,6 +95,7 @@ static const struct udevice_id axp_pmic_ids[] = {
{ .compatible = "x-powers,axp806", .data = AXP806_ID },
{ .compatible = "x-powers,axp809", .data = AXP809_ID },
{ .compatible = "x-powers,axp813", .data = AXP813_ID },
{ .compatible = "x-powers,axp318w", .data = AXP318_ID },
{ }
};

50
drivers/power/regulator/axp_regulator.c
View File

@@ -189,6 +189,55 @@ static const struct axp_regulator_plat axp313_regulators[] = {
{ }
};
/*
* Only two level step tuning is implemented for DCDC6, 8, 9
* so the voltage below is not support in this driver
* DCDC6: 20 (v1.8 - 2.4v), 40 (2.44v - 2.76v)
* DCDC8,9: 100 (1.9v - 3.4v)
*/
static const struct axp_regulator_plat axp318_regulators[] = {
{ "dcdc1", 0x10, BIT(0), 0x12, 0x1f, 1000, 3400, 100, NA },
{ "dcdc2", 0x10, BIT(1), 0x13, 0x7f, 500, 1540, 10, 70 },
{ "dcdc3", 0x10, BIT(2), 0x14, 0x7f, 500, 1540, 10, 70 },
{ "dcdc4", 0x10, BIT(3), 0x15, 0x7f, 500, 1540, 10, 70 },
{ "dcdc5", 0x10, BIT(4), 0x16, 0x7f, 500, 1540, 10, 70 },
{ "dcdc6", 0x10, BIT(5), 0x17, 0x7f, 500, 1540, 10, 70 },
{ "dcdc7", 0x10, BIT(6), 0x18, 0x7f, 500, 1840, 10, 70 },
{ "dcdc8", 0x10, BIT(7), 0x19, 0x7f, 500, 1840, 10, 70 },
{ "dcdc9", 0x11, BIT(0), 0x1a, 0x7f, 500, 1840, 10, 70 },
{ "aldo1", 0x20, BIT(0), 0x24, 0x1f, 500, 3400, 100, NA },
{ "aldo2", 0x20, BIT(1), 0x25, 0x1f, 500, 3400, 100, NA },
{ "aldo3", 0x20, BIT(2), 0x26, 0x1f, 500, 3400, 100, NA },
{ "aldo4", 0x20, BIT(3), 0x27, 0x1f, 500, 3400, 100, NA },
{ "aldo5", 0x20, BIT(4), 0x28, 0x1f, 500, 3400, 100, NA },
{ "aldo6", 0x20, BIT(5), 0x29, 0x1f, 500, 3400, 100, NA },
{ "bldo1", 0x20, BIT(6), 0x2a, 0x1f, 500, 3400, 100, NA },
{ "bldo2", 0x20, BIT(7), 0x2b, 0x1f, 500, 3400, 100, NA },
{ "bldo3", 0x21, BIT(0), 0x2c, 0x1f, 500, 3400, 100, NA },
{ "bldo4", 0x21, BIT(1), 0x2d, 0x1f, 500, 3400, 100, NA },
{ "bldo5", 0x21, BIT(2), 0x2e, 0x1f, 500, 3400, 100, NA },
{ "cldo1", 0x21, BIT(3), 0x2f, 0x1f, 500, 3400, 100, NA },
{ "cldo2", 0x21, BIT(4), 0x30, 0x1f, 500, 3400, 100, NA },
{ "cldo3", 0x21, BIT(5), 0x31, 0x1f, 500, 3400, 100, NA },
{ "cldo4", 0x21, BIT(6), 0x32, 0x1f, 500, 3400, 100, NA },
{ "cldo5", 0x21, BIT(7), 0x33, 0x1f, 500, 3400, 100, NA },
{ "dldo1", 0x22, BIT(0), 0x34, 0x1f, 500, 3400, 100, NA },
{ "dldo2", 0x22, BIT(1), 0x35, 0x1f, 500, 3400, 100, NA },
{ "dldo3", 0x22, BIT(2), 0x36, 0x1f, 500, 3400, 100, NA },
{ "dldo4", 0x22, BIT(3), 0x37, 0x1f, 500, 3400, 100, NA },
{ "dldo5", 0x22, BIT(4), 0x38, 0x1f, 500, 3400, 100, NA },
{ "dldo6", 0x22, BIT(5), 0x39, 0x1f, 500, 3400, 100, NA },
{ "eldo1", 0x22, BIT(6), 0x3a, 0x1f, 500, 1500, 25, NA },
{ "eldo2", 0x22, BIT(7), 0x3b, 0x1f, 500, 1500, 25, NA },
{ "eldo3", 0x23, BIT(0), 0x3c, 0x1f, 500, 1500, 25, NA },
{ "eldo4", 0x23, BIT(1), 0x3d, 0x1f, 500, 1500, 25, NA },
{ "eldo5", 0x23, BIT(2), 0x3e, 0x1f, 500, 1500, 25, NA },
{ "eldo6", 0x23, BIT(3), 0x3f, 0x1f, 500, 1500, 25, NA },
{ "swout1", 0x11, BIT(3), NA, NA, NA, NA, NA, NA },
{ "swout2", 0x11, BIT(4), NA, NA, NA, NA, NA, NA },
{ }
};
/*
* The "dcdc2" regulator has another range, beyond 1.54V up to 3.4V, in
* steps of 100mV. We cannot model this easily, but also don't need that,
@@ -318,6 +367,7 @@ static const struct axp_regulator_plat *const axp_regulators[] = {
[AXP221_ID] = axp22x_regulators,
[AXP223_ID] = axp22x_regulators,
[AXP313_ID] = axp313_regulators,
[AXP318_ID] = axp318_regulators,
[AXP323_ID] = axp313_regulators,
[AXP717_ID] = axp717_regulators,
[AXP803_ID] = axp803_regulators,

1
include/axp_pmic.h
View File

@@ -39,6 +39,7 @@ enum {
AXP806_ID,
AXP809_ID,
AXP813_ID,
AXP318_ID,
};
int axp_set_dcdc1(unsigned int mvolt);