linux-kernel - [PATCH v8 14/15] dt-bindings: qcom

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Date:   Thu, 17 May 2018 14:19:14 +0300
From:   Ilia Lin <ilialin@...eaurora.org>
To:     mturquette@...libre.com, sboyd@...nel.org, robh@...nel.org,
        mark.rutland@....com, viresh.kumar@...aro.org, nm@...com,
        lgirdwood@...il.com, broonie@...nel.org, andy.gross@...aro.org,
        david.brown@...aro.org, catalin.marinas@....com,
        will.deacon@....com, rjw@...ysocki.net, linux-clk@...r.kernel.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-soc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        rnayak@...eaurora.org, ilialin@...eaurora.org,
        amit.kucheria@...aro.org, nicolas.dechesne@...aro.org,
        celster@...eaurora.org, tfinkel@...eaurora.org
Subject: [PATCH v8 14/15] dt-bindings: qcom_spmi: Document SAW support

Document the DT bindings for the SAW regulators.

The saw-leader is the only property that is configurable in DT.

The saw-slave property allows ganging (grouping) of
several regulators so that their outputs can be combined.

Signed-off-by: Ilia Lin <ilialin@...eaurora.org>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../bindings/regulator/qcom,spmi-regulator.txt     | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt b/Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt
index 57d2c65..406f2e5 100644
--- a/Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt
@@ -110,6 +110,11 @@ Qualcomm SPMI Regulators
 	Definition: Reference to regulator supplying the input pin, as
 		    described in the data sheet.
 
+- qcom,saw-reg:
+	Usage: optional
+	Value type: <phandle>
+	Description: Reference to syscon node defining the SAW registers.
+
 
 The regulator node houses sub-nodes for each regulator within the device. Each
 sub-node is identified using the node's name, with valid values listed for each
@@ -201,6 +206,17 @@ see regulator.txt - with additional custom properties described below:
 			2 = 0.55 uA
 			3 = 0.75 uA
 
+- qcom,saw-slave:
+	Usage: optional
+	Value type: <boo>
+	Description: SAW controlled gang slave. Will not be configured.
+
+- qcom,saw-leader:
+	Usage: optional
+	Value type: <boo>
+	Description: SAW controlled gang leader. Will be configured as
+		     SAW regulator.
+
 Example:
 
 	regulators {
@@ -221,3 +237,32 @@ Example:
 
 		....
 	};
+
+Example 2:
+
+	saw3: syscon@...0000 {
+		compatible = "syscon";
+		reg = <0x9A10000 0x1000>;
+	};
+
+	...
+
+	spm-regulators {
+		compatible = "qcom,pm8994-regulators";
+		qcom,saw-reg = <&saw3>;
+		s8 {
+			qcom,saw-slave;
+		};
+		s9 {
+			qcom,saw-slave;
+		};
+		s10 {
+			qcom,saw-slave;
+		};
+		pm8994_s11_saw: s11 {
+			qcom,saw-leader;
+			regulator-always-on;
+			regulator-min-microvolt = <900000>;
+			regulator-max-microvolt = <1140000>;
+		};
+	};
-- 
1.9.1