[PATCH 2/7] riscv: dts: eswin: add clock generator for EIC7700 SoC

[Pinkesh Vaghela]

From: Pritesh Patel <pritesh.patel at einfochips.com>

Add clock generator node for EIC7700 SoC.
HiFive Premier P550 boards have 24MHz crystal oscillator to provide
the input clock.

Signed-off-by: Pritesh Patel <pritesh.patel at einfochips.com>
Signed-off-by: Pinkesh Vaghela <pinkesh.vaghela at einfochips.com>
---
 .../boot/dts/eswin/eic7700-hifive-premier-p550.dts  |  5 +++++
 arch/riscv/boot/dts/eswin/eic7700.dtsi              | 13 +++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
index 131ed1fc6b2e..1fb92f0e7c55 100644
--- a/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
+++ b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
@@ -20,6 +20,11 @@ chosen {
 	};
 };
 
+&xtal {
+	clock-frequency = <24000000>;
+	clock-output-names = "xtal24m";
+};
+
 &uart0 {
 	status = "okay";
 };
diff --git a/arch/riscv/boot/dts/eswin/eic7700.dtsi b/arch/riscv/boot/dts/eswin/eic7700.dtsi
index 430a210f01e6..a7ebb1115958 100644
--- a/arch/riscv/boot/dts/eswin/eic7700.dtsi
+++ b/arch/riscv/boot/dts/eswin/eic7700.dtsi
@@ -4,6 +4,7 @@
  */
 
 /dts-v1/;
+#include <dt-bindings/clock/eswin,eic7700-clock.h>
 #include <dt-bindings/reset/eswin,eic7700-reset.h>
 
 / {
@@ -203,6 +204,11 @@ pmu {
 				<0x00000000 0x0000000f 0xfffffffc 0x000000ff 0x00000078>;
 	};
 
+	xtal: oscillator {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+	};
+
 	soc {
 		compatible = "simple-bus";
 		ranges;
@@ -343,6 +349,13 @@ gpioD: gpio-port at 3 {
 			};
 		};
 
+		clk: clock-controller at 51828000 {
+			compatible = "eswin,eic7700-clock";
+			reg = <0x0 0x51828000 0x0 0x300>;
+			clocks = <&xtal>;
+			#clock-cells = <1>;
+		};
+
 		reset: reset-controller at 51828300 {
 			compatible = "eswin,eic7700-reset";
 			reg = <0x0 0x51828300 0x0 0x200>;
-- 
2.34.1