[PATCH v8 14/15] dt-bindings: qcom_spmi: Document SAW support

From: Ilia Lin <ilialin@codeaurora.org>
To: mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org,
	mark.rutland@arm.com, viresh.kumar@linaro.org, nm@ti.com,
	lgirdwood@gmail.com, broonie@kernel.org, andy.gross@linaro.org,
	david.brown@linaro.org, catalin.marinas@arm.com,
	will.deacon@arm.com, rjw@rjwysocki.net,
	linux-clk@vger.kernel.org
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	rnayak@codeaurora.org, ilialin@codeaurora.org,
	amit.kucheria@linaro.org, nicolas.dechesne@linaro.org,
	celster@codeaurora.org, tfinkel@codeaurora.org
Subject: [PATCH v8 14/15] dt-bindings: qcom_spmi: Document SAW support
Date: Thu, 17 May 2018 14:19:14 +0300	[thread overview]
Message-ID: <1526555955-29960-15-git-send-email-ilialin@codeaurora.org> (raw)
In-Reply-To: <1526555955-29960-1-git-send-email-ilialin@codeaurora.org>

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@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.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@9A10000 {
+		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
