[PATCH v2 1/2] arm64: dts: uniphier: add CPU clock and OPP table for LD11 SoC

[Masahiro Yamada]

Add a CPU clock to every CPU node and a CPU OPP table to use the
generic cpufreq driver.

Note:
clock-latency-ns (300ns) was calculated based on the CPU-gear switch
sequencer spec; it takes 12 clock cycles on the sequencer running
at 50 MHz, plus a bit additional latency.

Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
---

Changes in v2:
  - Match the node name to the opp-hz property.

 arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi | 38 ++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi 
b/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
index 73e0acf..bb05f0a 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
@@ -70,14 +70,18 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a53", "arm,armv8";
                        reg = <0 0x000>;
+                       clocks = <&sys_clk 33>;
                        enable-method = "psci";
+                       operating-points-v2 = <&cluster0_opp>;
                };
 
                cpu1: cpu@1 {
                        device_type = "cpu";
                        compatible = "arm,cortex-a53", "arm,armv8";
                        reg = <0 0x001>;
+                       clocks = <&sys_clk 33>;
                        enable-method = "psci";
+                       operating-points-v2 = <&cluster0_opp>;
                };
        };
 
@@ -86,6 +90,40 @@
                method = "smc";
        };
 
+       cluster0_opp: opp_table {
+               compatible = "operating-points-v2";
+               opp-shared;
+
+               opp@245000000 {
+                       opp-hz = /bits/ 64 <245000000>;
+                       clock-latency-ns = <300>;
+               };
+               opp@250000000 {
+                       opp-hz = /bits/ 64 <250000000>;
+                       clock-latency-ns = <300>;
+               };
+               opp@490000000 {
+                       opp-hz = /bits/ 64 <490000000>;
+                       clock-latency-ns = <300>;
+               };
+               opp@500000000 {
+                       opp-hz = /bits/ 64 <500000000>;
+                       clock-latency-ns = <300>;
+               };
+               opp@653334000 {
+                       opp-hz = /bits/ 64 <653334000>;
+                       clock-latency-ns = <300>;
+               };
+               opp@666667000 {
+                       opp-hz = /bits/ 64 <666667000>;
+                       clock-latency-ns = <300>;
+               };
+               opp@980000000 {
+                       opp-hz = /bits/ 64 <980000000>;
+                       clock-latency-ns = <300>;
+               };
+       };
+
        clocks {
                refclk: ref {
                        compatible = "fixed-clock";
-- 
1.9.1