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regulator: i.MX anatop: Allow supply regulator 

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;