This patch adds the device tree bindings for the Freescale MXS on-chip
regulators.
Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
---
.../bindings/regulator/mxs-regulator.txt | 65 ++++++++++++++++++++
1 file changed, 65 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/mxs-regulator.txt
diff --git a/Documentation/devicetree/bindings/regulator/mxs-regulator.txt b/Documentation/devicetree/bindings/regulator/mxs-regulator.txt
new file mode 100644
index 0000000..e7092fc
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/mxs-regulator.txt
@@ -0,0 +1,65 @@
+Regulators on Freescale i.MX23/i.MX28
+
+On-chip linear regulator daisy chain:
+
++------------+ VDD5V +---------+ VDDIO
+| DC-DC | +--------> LINREG +--------->+
+| | | VDDIO | |
+| | +---------+ |
+| DCDC_VDDIO +->-+-----------------------------+
+| | |
+| | | VDDIO +---------+ VDDA
+| | +--------> LINREG +--------->+
+| | | VDDA | |
+| | +---------+ |
+| DCDC_VDDA +->-+-----------------------------+
+| | |
+| | | VDDA +---------+ VDD1P5
+| | +--------> LINREG +--------->
+| | | | VDD1P5 |
+| | | +---------+
+| | | VDDA +---------+ VDDD
+| | +--------> LINREG +--------->+
+| | | VDDD | |
+| | +---------+ |
+| DCDC_VDDD +->-------------------------------+
++------------+ |
+ v
+
+Required properties:
+- compatible (imx23 and imx28 supported):
+ - "fsl,<soc>-dcdc" for DC-DC converter
+ - "fsl,<soc>-vddd" for VDDD linear regulator
+ - "fsl,<soc>-vdda" for VDDA linear regulator
+ - "fsl,<soc>-vddio" for VDDIO linear regulator
+
+Optional properties:
+- switching-frequency: switching frequency for the DC-DC converter in Hz.
+ Possible values are <1200000>, <1250000> or <1500000> (default).
+
+Any regulator property defined as part of the core regulator
+binding, defined in regulator.txt, can also be used.
+
+Example for i.MX28:
+
+ power: power@80044000 {
+ compatible = "fsl,imx28-power", "syscon";
+ reg = <0x80044000 0x2000>;
+ interrupts = <6>;
+
+ dcdc: regulator@1 {
+ compatible = "fsl,imx28-dcdc";
+ regulator-name = "dcdc";
+ regulator-boot-on;
+ regulator-always-on;
+ switching-frequency = <1250000>;
+ };
+
+ reg_vddd: regulator@2 {
+ compatible = "fsl,imx28-vddd";
+ regulator-name = "vddd";
+ regulator-min-microvolt = <1350000>;
+ regulator-max-microvolt = <1550000>;
+ };
+ };
+
--
1.7.9.5
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