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Subject[PATCH 4/5] ARC: AXS103: DTS: Set cpu frequency explicitly via dts
Date
Set cpu frequency explicitly via "cpu-freq" param in cpu 0 node
in device tree.

We add "cpu-freq" only to cpu 0 as all cpus are clocking from same
clock source (same pll in our case).

We override cpus node in skeleton as we don't need this change for
nsim.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
arch/arc/boot/dts/axc003.dtsi | 13 +++++++++++++
arch/arc/boot/dts/axc003_idu.dtsi | 35 +++++++++++++++++++++++++++++++++++
2 files changed, 48 insertions(+)

diff --git a/arch/arc/boot/dts/axc003.dtsi b/arch/arc/boot/dts/axc003.dtsi
index dca7e39..7c7411c 100644
--- a/arch/arc/boot/dts/axc003.dtsi
+++ b/arch/arc/boot/dts/axc003.dtsi
@@ -17,6 +17,19 @@
#address-cells = <2>;
#size-cells = <2>;

+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ compatible = "snps,archs38";
+ reg = <0>;
+ cpu-freq = <100000000>;
+ clocks = <&core_clk>;
+ };
+ };
+
cpu_card {
compatible = "simple-bus";
#address-cells = <1>;
diff --git a/arch/arc/boot/dts/axc003_idu.dtsi b/arch/arc/boot/dts/axc003_idu.dtsi
index 5b56bef..44bc01e 100644
--- a/arch/arc/boot/dts/axc003_idu.dtsi
+++ b/arch/arc/boot/dts/axc003_idu.dtsi
@@ -17,6 +17,41 @@
#address-cells = <2>;
#size-cells = <2>;

+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /*
+ * "cpu-freq" was added only to cpu 0 as all cpus are clocking
+ * from same clock source (same pll (core_clk) in our case).
+ */
+ cpu@0 {
+ device_type = "cpu";
+ compatible = "snps,archs38";
+ reg = <0>;
+ cpu-freq = <100000000>;
+ clocks = <&core_clk>;
+ };
+ cpu@1 {
+ device_type = "cpu";
+ compatible = "snps,archs38";
+ reg = <1>;
+ clocks = <&core_clk>;
+ };
+ cpu@2 {
+ device_type = "cpu";
+ compatible = "snps,archs38";
+ reg = <2>;
+ clocks = <&core_clk>;
+ };
+ cpu@3 {
+ device_type = "cpu";
+ compatible = "snps,archs38";
+ reg = <3>;
+ clocks = <&core_clk>;
+ };
+ };
+
cpu_card {
compatible = "simple-bus";
#address-cells = <1>;
--
2.9.3
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