On Mon, Apr 04, 2016 at 02:08:10PM -0700, Sreedhar Sambangi wrote:In this Chip , We only have one Software programmable LDO used for SD /eMMC. The other LDO's are with fixed voltage.
This adds the regulator nodes to DK04 device tree to support
Change-Id: I9c1df0e720a330bf6db1889fd2247f6a70ea6faa
Signed-off-by: Sreedhar Sambangi <ssambang@xxxxxxxxxxxxxx>
---
.../bindings/regulator/ipq4019-regulator.txt | 19 +++++++++++++++++++
arch/arm/boot/dts/qcom-ipq4019-ap.dk04.1.dtsi | 11 +++++++++++
2 files changed, 30 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/ipq4019-regulator.txt
diff --git a/Documentation/devicetree/bindings/regulator/ipq4019-regulator.txt b/Documentation/devicetree/bindings/regulator/ipq4019-regulator.txt
new file mode 100644
index 0000000..9d934a4
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/ipq4019-regulator.txt
@@ -0,0 +1,19 @@
+* Qualcomm Technologies, Inc. IPQ4019 regulators
+
+Required properties:
+- compatible : Must be "regulator-ipq4019".
+- states : Selection of available voltages and corresponding values
+- reg : Register address for controlling LDO
+- mask : Mask value for switching voltages
+Example:
How many LDOs are there on the IPQ4019? Can you document all of the supplies?
You can figure this out by looking for the vdd pins in the chip documentation
+
+ vccq_sd0: regulator@0 {
+ compatible = "qcom,regulator-ipq4019";
+ regulator-name = "SD0 VccQ";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3000000>;
+ states = <3000000 0x3
+ 1800000 0x1>;
So there are only 2 states? No linear range from 1.8 to 3.3?
+ reg = <0x01948000 0x4>;
+ mask = <0x3>;
+ };