ARM: dts: sun6i: Add cpu clock reference and operating points to dtsi

The cpu core is clocked from the "cpu" clock. Add a reference to it
in the first cpu node. Also add "cpu0" label to the node.

The operating points were taken from the a list compiled by Maxime Ripard,
which is based on A31 FEX files from the sunxi-boards repository. Not all
boards have the same settings. The settings in this patch are the ones
shared by A/B/C revisions, plus the default clock setting from u-boot.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi
index 2a37ee9..9ea0edb 100644 (file)
--- a/arch/arm/boot/dts/sun6i-a31.dtsi
+++ b/arch/arm/boot/dts/sun6i-a31.dtsi
@@ -96,10 +96,22 @@
                #address-cells = <1>;
                #size-cells = <0>;
 
-               cpu@0 {
+               cpu0: cpu@0 {
                        compatible = "arm,cortex-a7";
                        device_type = "cpu";
                        reg = <0>;
+                       clocks = <&cpu>;
+                       clock-latency = <244144>; /* 8 32k periods */
+                       operating-points = <
+                               /* kHz    uV */
+                               1008000 1200000
+                               864000  1200000
+                               720000  1100000
+                               480000  1000000
+                               >;
+                       #cooling-cells = <2>;
+                       cooling-min-level = <0>;
+                       cooling-max-level = <3>;
                };
 
                cpu@1 {