From 791a9e001d3ba3b552888b0bf3c592a50b71f57e Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Tue, 4 Apr 2017 17:50:58 +0800 Subject: 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: Icenowy Zheng Signed-off-by: Maxime Ripard --- arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi @@ -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"; @@ -389,5 +397,14 @@ interrupts = , ; }; + + 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>; + }; }; };