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Commit 791a9e00 authored by Icenowy Zheng's avatar Icenowy Zheng Committed by Maxime Ripard
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arm64: allwinner: a64: add r_ccu node 



A64 SoC have a CCU (r_ccu) in PRCM block.

Add the device node for it.

The mux 3 of R_CCU is an internal oscillator, which is 16MHz according
to the user manual, and has only 30% accuracy based on our experience
on older SoCs. The real mesaured value of it on two Pine64 boards is
around 11MHz, which is around 70% of 16MHz.

Signed-off-by: default avatarIcenowy Zheng <icenowy@aosc.xyz>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
parent c1ae3cfa

arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi

+17 −0
Original line number Diff line number Diff line
@@ -98,6 +98,14 @@ 
		clock-output-names = "osc32k";

	};



	iosc: internal-osc-clk {

		#clock-cells = <0>;

		compatible = "fixed-clock";

		clock-frequency = <16000000>;

		clock-accuracy = <300000000>;

		clock-output-names = "iosc";

	};



	psci {

		compatible = "arm,psci-0.2";

		method = "smc";
@@ -392,5 +400,14 @@ 
			interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,

				     <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;

		};



		r_ccu: clock@1f01400 {

			compatible = "allwinner,sun50i-a64-r-ccu";

			reg = <0x01f01400 0x100>;

			clocks = <&osc24M>, <&osc32k>, <&iosc>;

			clock-names = "hosc", "losc", "iosc";

			#clock-cells = <1>;

			#reset-cells = <1>;

		};

	};

};