mfd: Add bcm590xx pmu DT binding

Add a DT binding for the BCM590xx PMUs. The binding inherits from
the generic regulator bindings.

Signed-off-by: Matt Porter <mporter@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/Documentation/devicetree/bindings/mfd/bcm590xx.txt b/Documentation/devicetree/bindings/mfd/bcm590xx.txt
new file mode 100644 (file)
index 0000000..1fe30e2
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/bcm590xx.txt
@@ -0,0 +1,37 @@
+-------------------------------
+BCM590xx Power Management Units
+-------------------------------
+
+Required properties:
+- compatible: "brcm,bcm59056"
+- reg: I2C slave address
+- interrupts: interrupt for the PMU. Generic interrupt client node bindings
+  are described in interrupt-controller/interrupts.txt
+
+------------------
+Voltage Regulators
+------------------
+
+Optional child nodes:
+- regulators: container node for regulators following the generic
+  regulator binding in regulator/regulator.txt
+
+  The valid regulator node names for BCM59056 are:
+       rfldo, camldo1, camldo2, simldo1, simldo2, sdldo, sdxldo,
+       mmcldo1, mmcldo2, audldo, micldo, usbldo, vibldo,
+       csr, iosr1, iosr2, msr, sdsr1, sdsr2, vsr
+
+Example:
+       pmu: bcm59056@8 {
+               compatible = "brcm,bcm59056";
+               reg = <0x08>;
+               interrupts = <GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH>;
+               regulators {
+                       rfldo_reg: rfldo {
+                               regulator-min-microvolt = <1200000>;
+                               regulator-max-microvolt = <3300000>;
+                       };
+
+                       ...
+               };
+       };