[PATCH v4 4/6] ARM: dts: wpcm450: Add clock controller node

Jonathan Neuschäfer
2022-06-10T07:22:46Z

This declares the clock controller and the necessary 48 Mhz reference
clock in the WPCM450 device. Switching devices over to the clock
controller is intentionally done in a separate patch to give time for
the clock controller driver to land.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---

v4:
- no changes

v3:
- Change clock-output-names and clock-names from "refclk" to "ref"

v2:
- https://lore.kernel.org/lkml/20220429172030.398011-6-j.neuschaefer@gmx.net/
- no changes
---
arch/arm/boot/dts/nuvoton-wpcm450.dtsi | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/arch/arm/boot/dts/nuvoton-wpcm450.dtsi b/arch/arm/boot/dts/nuvoton-wpcm450.dtsi
index b9b669cd632f1..332cc222c7dc5 100644
--- a/arch/arm/boot/dts/nuvoton-wpcm450.dtsi
+++ b/arch/arm/boot/dts/nuvoton-wpcm450.dtsi
@@ -37,6 +37,14 @@ clk24m: clock-24mhz {
#clock-cells = <0>;
};

+ refclk: clock-48mhz {
+ /* 48 MHz reference oscillator */
+ compatible = "fixed-clock";
+ clock-output-names = "ref";
+ clock-frequency = <48000000>;
+ #clock-cells = <0>;
+ };
+
soc {
compatible = "simple-bus";
#address-cells = <1>;
@@ -49,6 +57,15 @@ gcr: syscon@b0000000 {
reg = <0xb0000000 0x200>;
};

+ clk: clock-controller@b0000200 {
+ compatible = "nuvoton,wpcm450-clk";
+ reg = <0xb0000200 0x100>;
+ clocks = <&refclk>;
+ clock-names = "ref";
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
+
serial0: serial@b8000000 {
compatible = "nuvoton,wpcm450-uart";
reg = <0xb8000000 0x20>;
--
2.35.1