53 lines
1.5 KiB
Diff
53 lines
1.5 KiB
Diff
|
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>;
|
||
|
|
+ };
|
||
|
|
};
|
||
|
|
};
|