[PATCH 3/3] power: regulator: add AXP313 support

[Jernej Škrabec]

On Wednesday, October 18, 2023 5:50:14 PM CEST Andre Przywara wrote:
> The X-Powers AXP313a is a small PMIC with just three buck converters and
> three LDOs, one of which is actually fixed (so not modelled here).
> 
> Add the compatible string and the respective regulator ranges to allow
> drivers to adjust voltages.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> ---
>  drivers/power/pmic/axp.c                |  1 +
>  drivers/power/regulator/axp_regulator.c | 17 +++++++++++++++++
>  include/axp_pmic.h                      |  1 +
>  3 files changed, 19 insertions(+)
> 
> diff --git a/drivers/power/pmic/axp.c b/drivers/power/pmic/axp.c
> index 025dac24f28..0e1e45fba74 100644
> --- a/drivers/power/pmic/axp.c
> +++ b/drivers/power/pmic/axp.c
> @@ -87,6 +87,7 @@ static const struct udevice_id axp_pmic_ids[] = {
>  	{ .compatible = "x-powers,axp209", .data = AXP209_ID },
>  	{ .compatible = "x-powers,axp221", .data = AXP221_ID },
>  	{ .compatible = "x-powers,axp223", .data = AXP223_ID },
> +	{ .compatible = "x-powers,axp313a", .data = AXP313_ID },
>  	{ .compatible = "x-powers,axp803", .data = AXP803_ID },
>  	{ .compatible = "x-powers,axp806", .data = AXP806_ID },
>  	{ .compatible = "x-powers,axp809", .data = AXP809_ID },
> diff --git a/drivers/power/regulator/axp_regulator.c
> b/drivers/power/regulator/axp_regulator.c index 02f320eac1e..d27e09538e0
> 100644
> --- a/drivers/power/regulator/axp_regulator.c
> +++ b/drivers/power/regulator/axp_regulator.c
> @@ -173,6 +173,22 @@ static const struct axp_regulator_plat
> axp22x_regulators[] = { { }
>  };
> 
> +/*
> + * The "dcdc1" 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,
> + * since it's typically only used for ~1.1V anyway, so just ignore it.

It can be modelled with look up table, as it's already done for some other 
regulators?

Best regards,
Jernej

> + * Also the DCDC3 regulator is described wrongly in the (available) manual,
> + * experiments show that the split point is at 1200mV, as for DCDC1/2. +
> */
> +static const struct axp_regulator_plat axp313_regulators[] = {
> +	{ "dcdc1", 0x10, BIT(0), 0x13, 0x7f,  500, 1540,  10, 70 },
> +	{ "dcdc2", 0x10, BIT(1), 0x14, 0x7f,  500, 1540,  10, 70 },
> +	{ "dcdc3", 0x10, BIT(2), 0x15, 0x7f,  500, 1840,  10, 70 },
> +	{ "aldo1", 0x10, BIT(3), 0x16, 0x1f,  500, 3500, 100, NA },
> +	{ "dldo1", 0x10, BIT(4), 0x17, 0x1f,  500, 3500, 100, NA },
> +	{ }
> +};
> +
>  static const struct axp_regulator_plat axp803_regulators[] = {
>  	{ "dcdc1", 0x10, BIT(0), 0x20, 0x1f, 1600, 3400, 100, NA },
>  	{ "dcdc2", 0x10, BIT(1), 0x21, 0x7f,  500, 1300,  10, 70 },
> @@ -274,6 +290,7 @@ static const struct axp_regulator_plat *const
> axp_regulators[] = { [AXP209_ID]	= axp20x_regulators,
>  	[AXP221_ID]	= axp22x_regulators,
>  	[AXP223_ID]	= axp22x_regulators,
> +	[AXP313_ID]	= axp313_regulators,
>  	[AXP803_ID]	= axp803_regulators,
>  	[AXP806_ID]	= axp806_regulators,
>  	[AXP809_ID]	= axp809_regulators,
> diff --git a/include/axp_pmic.h b/include/axp_pmic.h
> index 4ac64865831..aabafc8501b 100644
> --- a/include/axp_pmic.h
> +++ b/include/axp_pmic.h
> @@ -32,6 +32,7 @@ enum {
>  	AXP209_ID,
>  	AXP221_ID,
>  	AXP223_ID,
> +	AXP313_ID,
>  	AXP803_ID,
>  	AXP806_ID,
>  	AXP809_ID,