ARC: [plat-hsdk] use actual clk driver to manage cpu clk

With corresponding clk driver now merged upstream, switch to it.

 - core_clk now represent the PLL (vs. fixed clk before)
 - input_clk represent the clk signal src for PLL (basically xtal)

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

2 files changed, 11 insertions, 3 deletions

diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index daeef4ab2df9..b922f3faf554 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -57,10 +57,10 @@
                 };
         };
 
-        core_clk: core-clk {
+        input_clk: input-clk {
                 #clock-cells = <0>;
                 compatible = "fixed-clock";
-                clock-frequency = <500000000>;
+                clock-frequency = <33333333>;
         };
 
         cpu_intc: cpu-interrupt-controller {
@@ -102,6 +102,13 @@
 
                 ranges = <0x00000000 0xf0000000 0x10000000>;
 
+                core_clk: core-clk@0 {
+                        compatible = "snps,hsdk-core-pll-clock";
+                        reg = <0x00 0x10>, <0x14B8 0x4>;
+                        #clock-cells = <0>;
+                        clocks = <&input_clk>;
+                };
+
                 serial: serial@5000 {
                         compatible = "snps,dw-apb-uart";
                         reg = <0x5000 0x100>;
diff --git a/arch/arc/plat-hsdk/Kconfig b/arch/arc/plat-hsdk/Kconfig
index 5a6ed5afb009..bd08de4be75e 100644
--- a/arch/arc/plat-hsdk/Kconfig
+++ b/arch/arc/plat-hsdk/Kconfig
@@ -6,4 +6,5 @@
 #
 
 menuconfig ARC_SOC_HSDK
-       bool "ARC HS Development Kit SOC"
+        bool "ARC HS Development Kit SOC"
+        select CLK_HSDK