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regulator: i.MX anatop: Allow supply regulator

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The anatop regulators are SoC internal LDO regulators usually supplied
by an external PMIC. This patch adds support for specifying the supply
from the device tree using the vin-supply property.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sascha Hauer 2015-10-13 12:45:30 +02:00 committed by Mark Brown
parent 5abe4f223e
commit 0d19208e70
2 changed files with 4 additions and 0 deletions
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1
Documentation/devicetree/bindings/regulator/anatop-regulator.txt
View File

@ -13,6 +13,7 @@ Optional properties:
- anatop-delay-reg-offset: Anatop MFD step time register offset
- anatop-delay-bit-shift: Bit shift for the step time register
- anatop-delay-bit-width: Number of bits used in the step time register
- vin-supply: The supply for this regulator
Any property defined as part of the core regulator
binding, defined in regulator.txt, can also be used.

3
drivers/regulator/anatop-regulator.c
View File

@ -30,6 +30,7 @@
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/machine.h>
#define LDO_RAMP_UP_UNIT_IN_CYCLES 64 /* 64 cycles per step */
#define LDO_RAMP_UP_FREQ_IN_MHZ 24 /* cycle based on 24M OSC */
@ -199,6 +200,7 @@ static int anatop_regulator_probe(struct platform_device *pdev)
rdesc->owner = THIS_MODULE;
initdata = of_get_regulator_init_data(dev, np, rdesc);
initdata->supply_regulator = "vin";
sreg->initdata = initdata;
anatop_np = of_get_parent(np);
@ -262,6 +264,7 @@ static int anatop_regulator_probe(struct platform_device *pdev)
rdesc->vsel_reg = sreg->control_reg;
rdesc->vsel_mask = ((1 << sreg->vol_bit_width) - 1) <<
sreg->vol_bit_shift;
rdesc->min_dropout_uV = 125000;
config.dev = &pdev->dev;
config.init_data = initdata;