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

Adding the bindings of the clock source of PMC in DT.
Signed-off-by: NJoseph Lo <josephl@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

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

 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

@@ -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

@@ -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

@@ -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

@@ -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";

arch/arm/boot/dts/tegra20-harmony.dts

@@ -451,6 +451,19 @@
 		bus-width = <8>;
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock {
+			compatible = "fixed-clock";
+			reg=<0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
 	kbc {
 		status = "okay";
 		nvidia,debounce-delay-ms = <2>;

arch/arm/boot/dts/tegra20-paz00.dts

@@ -447,6 +447,19 @@
 		bus-width = <8>;
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock {
+			compatible = "fixed-clock";
+			reg=<0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 

arch/arm/boot/dts/tegra20-seaboard.dts

@@ -595,6 +595,19 @@
 		bus-width = <8>;
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock {
+			compatible = "fixed-clock";
+			reg=<0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 

arch/arm/boot/dts/tegra20-tamonten.dtsi

@@ -471,6 +471,19 @@
 		status = "okay";
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock {
+			compatible = "fixed-clock";
+			reg=<0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
 	regulators {
 		compatible = "simple-bus";
 

arch/arm/boot/dts/tegra20-trimslice.dts

@@ -330,6 +330,19 @@
 		bus-width = <4>;
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock {
+			compatible = "fixed-clock";
+			reg=<0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
 	poweroff {
 		compatible = "gpio-poweroff";
 		gpios = <&gpio 191 1>; /* gpio PX7, active low */

arch/arm/boot/dts/tegra20-ventana.dts

@@ -531,6 +531,19 @@
 		bus-width = <8>;
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock {
+			compatible = "fixed-clock";
+			reg=<0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
 	regulators {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/tegra20-whistler.dts

@@ -520,6 +520,19 @@
 		bus-width = <8>;
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock {
+			compatible = "fixed-clock";
+			reg=<0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
 	kbc {
 		status = "okay";
 		nvidia,debounce-delay-ms = <20>;

arch/arm/boot/dts/tegra20.dtsi

@@ -417,6 +417,8 @@
 	pmc {
 		compatible = "nvidia,tegra20-pmc";
 		reg = <0x7000e400 0x400>;
+		clocks = <&tegra_car 110>, <&clk32k_in>;
+		clock-names = "pclk", "clk32k_in";
 	};
 
 	memory-controller@7000f000 {

arch/arm/boot/dts/tegra30-beaver.dts

@@ -268,6 +268,19 @@
 		bus-width = <8>;
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock {
+			compatible = "fixed-clock";
+			reg=<0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
 	regulators {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/tegra30-cardhu.dtsi

@@ -322,6 +322,19 @@
 		bus-width = <8>;
 	};
 
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock {
+			compatible = "fixed-clock";
+			reg=<0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+
 	regulators {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/tegra30.dtsi

@@ -426,6 +426,8 @@
 	pmc {
 		compatible = "nvidia,tegra30-pmc";
 		reg = <0x7000e400 0x400>;
+		clocks = <&tegra_car 218>, <&clk32k_in>;
+		clock-names = "pclk", "clk32k_in";
 	};
 
 	memory-controller {