linux-kernel - [PATCH 3/5] dt-bindings: clk: sprd: add bindings for sc9863a clock controller

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Message-ID: <20191025111338.27324-4-chunyan.zhang@unisoc.com>
Date:   Fri, 25 Oct 2019 19:13:36 +0800
From:   Chunyan Zhang <chunyan.zhang@...soc.com>
To:     Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
CC:     <linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Chunyan Zhang <chunyan.zhang@...soc.com>
Subject: [PATCH 3/5] dt-bindings: clk: sprd: add bindings for sc9863a clock controller


add a new bindings to describe sc9863a clock compatible string.

Signed-off-by: Chunyan Zhang <chunyan.zhang@...soc.com>
---
 .../bindings/clock/sprd,sc9863a-clk.txt       | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.txt

diff --git a/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.txt b/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.txt
new file mode 100644
index 000000000000..a73ae5574c82
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sprd,sc9863a-clk.txt
@@ -0,0 +1,59 @@
+Unisoc SC9863A Clock Binding
+------------------------
+
+Required properties:
+- compatible: should contain the following compatible strings:
+	- "sprd,sc9863a-ap-clk"
+	- "sprd,sc9863a-pmu-gate"
+	- "sprd,sc9863a-pll"
+	- "sprd,sc9863a-mpll"
+	- "sprd,sc9863a-rpll"
+	- "sprd,sc9863a-dpll"
+	- "sprd,sc9863a-aon-clk"
+	- "sprd,sc9863a-apahb-gate"
+	- "sprd,sc9863a-aonapb-gate"
+	- "sprd,sc9863a-mm-gate"
+	- "sprd,sc9863a-mm-clk"
+	- "sprd,sc9863a-vspahb-gate"
+	- "sprd,sc9863a-apapb-gate"
+
+- #clock-cells: must be 1
+
+- clocks : Should be the input parent clock(s) phandle for the clock, this
+	   property here just simply shows which clock group the clocks'
+	   parents are in, since each clk node would represent many clocks
+	   which are defined in the driver.  The detailed dependency
+	   relationship (i.e. how many parents and which are the parents)
+	   are implemented in driver code.
+
+Optional properties:
+
+- reg:	Contain the registers base address and length. It must be configured
+	only if no 'sprd,syscon' under the node.
+
+- sprd,syscon: phandle to the syscon which is in the same address area with
+	       the clock, and so we can get regmap for the clocks from the
+	       syscon device.
+
+Example:
+	ap_clk: clock-controller@...00000 {
+		compatible = "sprd,sc9863a-ap-clk";
+		reg = <0 0x21500000 0 0x1000>;
+		clocks = <&ext_32k>, <&ext_26m>,
+			 <&pll 0>, <&rpll 0>;
+		#clock-cells = <1>;
+	};
+
+	pmu_gate: pmu-gate {
+		compatible = "sprd,sc9863a-pmu-gate";
+		sprd,syscon = <&pmu_regs>; /* 0x402b0000 */
+		clocks = <&ext_26m>;
+		#clock-cells = <1>;
+	};
+
+	pll: pll {
+		compatible = "sprd,sc9863a-pll";
+		sprd,syscon = <&anlg_phy_g2_regs>; /* 0x40353000 */
+		clocks = <&pmu_gate 0>;
+		#clock-cells = <1>;
+	};
-- 
2.20.1