linux-kernel - [PATCH 4/7] Documentation: bindings: move the Berlin clock documentation

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Message-Id: <1423845781-7480-5-git-send-email-antoine.tenart@free-electrons.com>
Date:	Fri, 13 Feb 2015 17:42:58 +0100
From:	Antoine Tenart <antoine.tenart@...e-electrons.com>
To:	sebastian.hesselbarth@...il.com, mturquette@...aro.org,
	sboyd@...eaurora.org
Cc:	Antoine Tenart <antoine.tenart@...e-electrons.com>,
	zmxu@...vell.com, jszhang@...vell.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 4/7] Documentation: bindings: move the Berlin clock documentation

The Berlin clock documentation was part of the Marvell Berlin SoC
documentation because the Berlin clock configuration was inside the
chip controller. With the recent rework of the chip and system
controller handling (now an MFD driver registers all sub-devices of the
two soc and system controller nodes and each device has its own
sub-node), the documentation of the Berlin clock driver can be moved to
the generic clock documentation directory.

Signed-off-by: Antoine Tenart <antoine.tenart@...e-electrons.com>
---
 .../devicetree/bindings/arm/marvell,berlin.txt     | 35 ----------------------
 .../devicetree/bindings/clock/marvell,berlin.txt   | 31 +++++++++++++++++++
 2 files changed, 31 insertions(+), 35 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/marvell,berlin.txt

diff --git a/Documentation/devicetree/bindings/arm/marvell,berlin.txt b/Documentation/devicetree/bindings/arm/marvell,berlin.txt
index 080953daf9f5..7f9b3ccdf25b 100644
--- a/Documentation/devicetree/bindings/arm/marvell,berlin.txt
+++ b/Documentation/devicetree/bindings/arm/marvell,berlin.txt
@@ -39,38 +39,3 @@ cpu-ctrl@...d0000 {
 	compatible = "marvell,berlin-cpu-ctrl";
 	reg = <0xf7dd0000 0x10000>;
 };
-
-* Clock provider binding
-
-As clock related registers are spread among the chip control registers, the
-chip control node also provides the clocks. Marvell Berlin2 (BG2, BG2CD, BG2Q)
-SoCs share the same IP for PLLs and clocks, with some minor differences in
-features and register layout.
-
-Required properties:
-- #clock-cells: shall be set to 1
-- clocks: clock specifiers referencing the core clock input clocks
-- clock-names: array of strings describing the input clock specifiers above.
-    Allowed clock-names for the reference clocks are
-      "refclk" for the SoCs osciallator input on all SoCs,
-    and SoC-specific input clocks for
-      BG2/BG2CD: "video_ext0" for the external video clock input
-
-Clocks provided by core clocks shall be referenced by a clock specifier
-indexing one of the provided clocks. Refer to dt-bindings/clock/berlin<soc>.h
-for the corresponding index mapping.
-
-Example:
-
-chip: chip-control@...000 {
-	compatible = "marvell,berlin2-chip-ctrl";
-	#clock-cells = <1>;
-	reg = <0xea0000 0x400>;
-	clocks = <&refclk>, <&externaldev 0>;
-	clock-names = "refclk", "video_ext0";
-};
-
-sysctrl: system-controller@...0 {
-	compatible = "marvell,berlin2-system-ctrl";
-	reg = <0xd000 0x100>;
-};
diff --git a/Documentation/devicetree/bindings/clock/marvell,berlin.txt b/Documentation/devicetree/bindings/clock/marvell,berlin.txt
new file mode 100644
index 000000000000..c611c495f3ff
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/marvell,berlin.txt
@@ -0,0 +1,31 @@
+Device Tree Clock bindings for Marvell Berlin
+
+This binding uses the common clock binding[1].
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Clock related registers are spread among the chip control registers. Berlin
+clock node should be a sub-node of the chip controller node. Marvell Berlin2
+(BG2, BG2CD, BG2Q) SoCs share the same IP for PLLs and clocks, with some
+minor differences in features and register layout.
+
+Required properties:
+- compatible: must be "marvell,berlin2-clk" or "marvell,berlin2q-clk"
+- #clock-cells: must be 1
+- clocks: must be the input parent clock phandle
+- clock-names: name of the input parent clock
+	Allowed clock-names for the reference clocks are
+	"refclk" for the SoCs oscillator input on all SoCs,
+	and SoC-specific input clocks for
+	BG2/BG2CD: "video_ext0" for the external video clock input
+
+
+Example:
+
+chip_clk: clock {
+	compatible = "marvell,berlin2q-clk";
+
+	#clock-cells = <1>;
+	clocks = <&refclk>;
+	clock-names = "refclk";
+};
-- 
2.3.0

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