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Commit fff51e77 authored by Keerthy's avatar Keerthy Committed by Alexandre Belloni
Browse files

ARM: dts: AM437x: Add the internal and external clock nodes for rtc 



rtc can either be supplied from internal 32k clock or external crystal
generated 32k clock. Internal clock is SOC specific and the external
clock is board dependent. Adding the corresponding nodes.

Signed-off-by: default avatarKeerthy <j-keerthy@ti.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent ff02c044

Documentation/devicetree/bindings/rtc/rtc-omap.txt

+4 −0
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ Required properties: 
Optional properties:

- system-power-controller: whether the rtc is controlling the system power

  through pmic_power_en

- clocks: Any internal or external clocks feeding in to rtc

- clock-names: Corresponding names of the clocks



Example:
@@ -26,4 +28,6 @@ rtc@1c23000 { 
		      19>;

	interrupt-parent = <&intc>;

	system-power-controller;

	clocks = <&clk_32k_rtc>, <&clk_32768_ck>;

	clock-names = "ext-clk", "int-clk";

};

arch/arm/boot/dts/am4372.dtsi

+2 −0
Original line number Diff line number Diff line
@@ -358,6 +358,8 @@ 
			interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH

				      GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;

			ti,hwmods = "rtc";

			clocks = <&clk_32768_ck>;

			clock-names = "int-clk";

			status = "disabled";

		};

arch/arm/boot/dts/am437x-gp-evm.dts

+13 −0
Original line number Diff line number Diff line
@@ -112,6 +112,13 @@ 
		clock-frequency = <12000000>;

	};



	/* fixed 32k external oscillator clock */

	clk_32k_rtc: clk_32k_rtc {

		#clock-cells = <0>;

		compatible = "fixed-clock";

		clock-frequency = <32768>;

	};



	sound0: sound@0 {

		compatible = "simple-audio-card";

		simple-audio-card,name = "AM437x-GP-EVM";
@@ -941,3 +948,9 @@ 
	tx-num-evt = <32>;

	rx-num-evt = <32>;

};



&rtc {

	clocks = <&clk_32k_rtc>, <&clk_32768_ck>;

	clock-names = "ext-clk", "int-clk";

	status = "okay";

};

arch/arm/boot/dts/am437x-idk-evm.dts

+9 −0
Original line number Diff line number Diff line
@@ -110,6 +110,13 @@ 
			gpios = <&gpio4 2 GPIO_ACTIVE_LOW>;

		};

	};



	/* fixed 32k external oscillator clock */

	clk_32k_rtc: clk_32k_rtc {

		#clock-cells = <0>;

		compatible = "fixed-clock";

		clock-frequency = <32768>;

	};

};



&am43xx_pinmux {
@@ -394,6 +401,8 @@ 
};



&rtc {

	clocks = <&clk_32k_rtc>, <&clk_32768_ck>;

	clock-names = "ext-clk", "int-clk";

	status = "okay";

};

arch/arm/boot/dts/am437x-sk-evm.dts

+9 −0
Original line number Diff line number Diff line
@@ -24,6 +24,13 @@ 
		display0 = &lcd0;

	};



	/* fixed 32k external oscillator clock */

	clk_32k_rtc: clk_32k_rtc {

		#clock-cells = <0>;

		compatible = "fixed-clock";

		clock-frequency = <32768>;

	};



	backlight {

		compatible = "pwm-backlight";

		pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;
@@ -697,6 +704,8 @@ 
};



&rtc {

	clocks = <&clk_32k_rtc>, <&clk_32768_ck>;

	clock-names = "ext-clk", "int-clk";

	status = "okay";

};