1 files changed, 52 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-4.9/0024-arm64-allwinner-a64-add-r_ccu-node.patch b/target/linux/sunxi/patches-4.9/0024-arm64-allwinner-a64-add-r_ccu-node.patch
new file mode 100644
index 0000000000..19a3589708
--- /dev/null
+++ b/target/linux/sunxi/patches-4.9/0024-arm64-allwinner-a64-add-r_ccu-node.patch
@@ -0,0 +1,52 @@
+From 791a9e001d3ba3b552888b0bf3c592a50b71f57e Mon Sep 17 00:00:00 2001
+From: Icenowy Zheng <icenowy@aosc.xyz>
+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 <icenowy@aosc.xyz>
+Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
+---
+ 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 = <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>;
++		};
+ 	};
+ };