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Commit 7021d122 authored by Joseph Lo's avatar Joseph Lo Committed by Stephen Warren
Browse files

ARM: tegra: add clock source of PMC to device trees 



Adding the bindings of the clock source of PMC in DT.

Signed-off-by: default avatarJoseph Lo <josephl@nvidia.com>
Signed-off-by: default avatarStephen Warren <swarren@nvidia.com>
parent 7495b2eb

Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt

+28 −1
Original line number Diff line number Diff line 
NVIDIA Tegra Power Management Controller (PMC)



Properties:

Required properties:

- name : Should be pmc

- compatible : Should contain "nvidia,tegra<chip>-pmc".

- reg : Offset and length of the register set for the device

- clocks : Must contain an entry for each entry in clock-names.

- clock-names : Must include the following entries:

  "pclk" (The Tegra clock of that name),

  "clk32k_in" (The 32KHz clock input to Tegra).



Optional properties:

- nvidia,invert-interrupt : If present, inverts the PMU interrupt signal.

  The PMU is an external Power Management Unit, whose interrupt output

  signal is fed into the PMC. This signal is optionally inverted, and then
@@ -12,8 +18,29 @@ Properties: 


Example:



/ SoC dts including file

pmc@7000f400 {

	compatible = "nvidia,tegra20-pmc";

	reg = <0x7000e400 0x400>;

	clocks = <&tegra_car 110>, <&clk32k_in>;

	clock-names = "pclk", "clk32k_in";

	nvidia,invert-interrupt;

};



/ Tegra board dts file

{

	...

	clocks {

		compatible = "simple-bus";

		#address-cells = <1>;

		#size-cells = <0>;



		clk32k_in: clock {

			compatible = "fixed-clock";

			reg=<0>;

			#clock-cells = <0>;

			clock-frequency = <32768>;

		};

	};

	...

};

arch/arm/boot/dts/tegra114-dalmore.dts

+13 −0
Original line number Diff line number Diff line
@@ -18,4 +18,17 @@ 
	pmc {

		nvidia,invert-interrupt;

	};



	clocks {

		compatible = "simple-bus";

		#address-cells = <1>;

		#size-cells = <0>;



		clk32k_in: clock {

			compatible = "fixed-clock";

			reg=<0>;

			#clock-cells = <0>;

			clock-frequency = <32768>;

		};

	};

};

arch/arm/boot/dts/tegra114-pluto.dts

+13 −0
Original line number Diff line number Diff line
@@ -18,4 +18,17 @@ 
	pmc {

		nvidia,invert-interrupt;

	};



	clocks {

		compatible = "simple-bus";

		#address-cells = <1>;

		#size-cells = <0>;



		clk32k_in: clock {

			compatible = "fixed-clock";

			reg=<0>;

			#clock-cells = <0>;

			clock-frequency = <32768>;

		};

	};

};

arch/arm/boot/dts/tegra114.dtsi

+2 −0
Original line number Diff line number Diff line
@@ -101,6 +101,8 @@ 
	pmc {

		compatible = "nvidia,tegra114-pmc";

		reg = <0x7000e400 0x400>;

		clocks = <&tegra_car 261>, <&clk32k_in>;

		clock-names = "pclk", "clk32k_in";

	};



	iommu {

arch/arm/boot/dts/tegra20-colibri-512.dtsi

+13 −0
Original line number Diff line number Diff line
@@ -447,6 +447,19 @@ 
		cd-gpios = <&gpio 23 1>; /* gpio PC7 */

	};



	clocks {

		compatible = "simple-bus";

		#address-cells = <1>;

		#size-cells = <0>;



		clk32k_in: clock {

			compatible = "fixed-clock";

			reg=<0>;

			#clock-cells = <0>;

			clock-frequency = <32768>;

		};

	};



	sound {

		compatible = "nvidia,tegra-audio-wm9712-colibri_t20",

			         "nvidia,tegra-audio-wm9712";