[v2] dt/bindings: qoriq-clock: Add binding for FMan clock mux

* [v2] dt/bindings: qoriq-clock: Add binding for FMan clock mux
@ 2015-04-08  7:43 ` Igal.Liberman
  0 siblings, 0 replies; 12+ messages in thread
From: Igal.Liberman @ 2015-04-08  7:43 UTC (permalink / raw)
  To: devicetree, linuxppc-dev; +Cc: scottwood, Igal Liberman

From: Igal Liberman <Igal.Liberman@freescale.com>

v2: Addressed feedback from Scott:
	- Moved the "fman-clk-mux" clock provider details
	  under "clocks" property.

Signed-off-by: Igal Liberman <Igal.Liberman@freescale.com>
---
 .../devicetree/bindings/clock/qoriq-clock.txt      |   63 +++++++++++++++++++-
 1 file changed, 61 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/qoriq-clock.txt b/Documentation/devicetree/bindings/clock/qoriq-clock.txt
index df4a259..4d63ac6 100644
--- a/Documentation/devicetree/bindings/clock/qoriq-clock.txt
+++ b/Documentation/devicetree/bindings/clock/qoriq-clock.txt
@@ -65,9 +65,10 @@ Required properties:
 		It takes parent's clock-frequency as its clock.
 	* "fsl,qoriq-platform-pll-1.0" for the platform PLL clock (v1.0)
 	* "fsl,qoriq-platform-pll-2.0" for the platform PLL clock (v2.0)
+	* "fsl,fman-clk-mux" for the Frame Manager clock.
 - #clock-cells: From common clock binding. The number of cells in a
-	clock-specifier. Should be <0> for "fsl,qoriq-sysclk-[1,2].0"
-	clocks, or <1> for "fsl,qoriq-core-pll-[1,2].0" clocks.
+	clock-specifier. Should be <0> for "fsl,qoriq-sysclk-[1,2].0" and
+	"fsl,fman-clk-mux" clocks or <1> for "fsl,qoriq-core-pll-[1,2].0".
 	For "fsl,qoriq-core-pll-[1,2].0" clocks, the single
 	clock-specifier cell may take the following values:
 	* 0 - equal to the PLL frequency
@@ -76,6 +77,52 @@ Required properties:
 
 Recommended properties:
 - clocks: Should be the phandle of input parent clock
+	For "fsl,fman-clk-mux" clock there are several options for parent
+	clock (clock provider), the parent is determined according to the
+	Reset Configuration Word of the specific device:
+		* P2041, P3041:
+			* 0 - equal to platform PLL divided by 2
+			* 1 - equal to PLL2 divided by 2
+		* P4080 (Both FMans):
+			* 0 - equal to platform PLL divided by 2
+			* 1 - equal to PLL3 divided by 2
+		* P5020:
+			* 0 - equal to platform PLL divided by 2
+			* 1 - equal to PLL2 divided by 2
+			* 2 - equal to PLL2 divided by 4
+		* P5040 (Both FMans):
+			* 0 - equal to platform PLL divided by 2
+			* 1 - equal to PLL3 divided by 2
+			* 2 - equal to PLL3 divided by 4
+		* T1024:
+			* 0 - equal to PLL1 divided by 2
+		* T1040:
+			* 0 - equal to platform PLL
+		* T2080, B4860, B4420:
+			* 0 - equal to PLL1
+			* 1 - equal to PLL1 divided by 2
+			* 2 - equal to PLL1 divided by 3
+			* 3 - equal to PLL1 divided by 4
+			* 4 - equal to platform PLL
+			* 5 - equal to PLL2 divided by 2
+			* 6 - equal to PLL2 divided by 3
+		* T4240:
+			* FM1:
+			* 0 equal to PLL1 divided by 2
+			* 1 equal to PLL1 divided by 3
+			* 2 equal to PLL1 divided by 4
+			* 3 equal to platform PLL
+			* 4 equal to PLL2 divided by 2
+			* FM2:
+			* 0 equal to PLL2 divided by 2
+			* 1 equal to PLL2 divided by 3
+			* 2 equal to PLL2 divided by 4
+			* 3 equal to platform PLL
+			* 4 equal to PLL1 divided by 2
+			* 5 equal to PLL1 divided by 3
+	In Part of FMan V3 devices (B4, T2, T4) the single
+	clock-specifier cell may be determined by the CLKCGxHWACSR
+	register in addtion to RCW.
 - clock-names: From common clock binding, indicates the clock name
 - clock-output-names: From common clock binding, indicates the names of
 	output clocks
@@ -139,6 +186,18 @@ Example for clock block and clock provider:
 			clocks = <&sysclk>;
 			clock-output-names = "platform-pll", "platform-pll-div2";
 		};
+
+		fm0clk: fm0-clk-mux {
+			#clock-cells = <0>;
+			reg = <0x10 4>
+			compatible = "fsl,fman-clk-mux";
+			clocks = <&pll0 0>, <&pll0 1>, <&pll0 2>, <&pll0 3>,
+				 <&platform_pll 0>, <&pll1 1>, <&pll1 2>;
+			clock-names = "pll0", "pll0-div2", "pll0-div3",
+				      "pll0-div4", "platform-pll", "pll1-div2",
+				      "pll1-div3";
+			clock-output-names = "fm0-clk";
+		};
 	};
 };
 
-- 
1.7.9.5

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