[PATCH] regulator: i.MX anatop: Allow supply regulator
From: Sascha Hauer
Date: Tue Oct 13 2015 - 06:45:30 EST
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@xxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
Documentation/devicetree/bindings/regulator/anatop-regulator.txt | 1 +
drivers/regulator/anatop-regulator.c | 3 +++
2 files changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/regulator/anatop-regulator.txt b/Documentation/devicetree/bindings/regulator/anatop-regulator.txt
index 758eae24082a..37c4ea076f88 100644
--- a/Documentation/devicetree/bindings/regulator/anatop-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/anatop-regulator.txt
@@ -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.
diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c
index 738adfa5332b..7d99f2c8cef3 100644
--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -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;
--
2.6.1
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