linux-kernel - [PATCH v8 05/15] dt-bindings: clock: Document qcom,hfpll

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Message-Id: <1519740422-3835-6-git-send-email-sricharan@codeaurora.org>
Date:   Tue, 27 Feb 2018 19:36:52 +0530
From:   Sricharan R <sricharan@...eaurora.org>
To:     viresh.kumar@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
        mturquette@...libre.com, sboyd@...eaurora.org,
        linux@...linux.org.uk, andy.gross@...aro.org,
        david.brown@...aro.org, rjw@...ysocki.net,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-pm@...r.kernel.org, robh@...nel.org,
        sricharan@...eaurora.org, linux@....linux.org.uk
Subject: [PATCH v8 05/15] dt-bindings: clock: Document qcom,hfpll

From: Stephen Boyd <sboyd@...eaurora.org>

Adds bindings document for qcom,hfpll instantiated within
the Krait processor subsystem as separate register region.

Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
---
 .../devicetree/bindings/clock/qcom,hfpll.txt       | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,hfpll.txt

diff --git a/Documentation/devicetree/bindings/clock/qcom,hfpll.txt b/Documentation/devicetree/bindings/clock/qcom,hfpll.txt
new file mode 100644
index 0000000..771cb0a
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,hfpll.txt
@@ -0,0 +1,46 @@
+High-Frequency PLL (HFPLL)
+
+PROPERTIES
+
+- compatible:
+	Usage: required
+	Value type: <string>:
+		shall contain only one of the following. The generic
+		compatible "qcom,hfpll" should be also included.
+
+                        "qcom,hfpll-ipq8064", "qcom,hfpll"
+                        "qcom,hfpll-apq8064", "qcom,hfpll"
+                        "qcom,hfpll-msm8974", "qcom,hfpll"
+                        "qcom,hfpll-msm8960", "qcom,hfpll"
+
+- reg:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: address and size of HPLL registers. An optional second
+		    element specifies the address and size of the alias
+		    register region.
+
+- clock-output-names:
+	Usage: required
+	Value type: <string>
+	Definition: Name of the PLL. Typically hfpllX where X is a CPU number
+		    starting at 0. Otherwise hfpll_Y where Y is more specific
+		    such as "l2".
+
+Example:
+
+1) An HFPLL for the L2 cache.
+
+	clock-controller@...16000 {
+		compatible = "qcom,hfpll-ipq8064", "qcom,hfpll";
+		reg = <0xf9016000 0x30>;
+		clock-output-names = "hfpll_l2";
+	};
+
+2) An HFPLL for CPU0. This HFPLL has the alias register region.
+
+	clock-controller@...8a000 {
+		compatible = "qcom,hfpll-ipq8064", "qcom,hfpll";
+		reg = <0xf908a000 0x30>, <0xf900a000 0x30>;
+		clock-output-names = "hfpll0";
+	};
-- 
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