From: Finley Xiao <redacted>

This patch supports adjusting opp's voltage according to leakage

Signed-off-by: Finley Xiao <redacted>
---
 .../devicetree/bindings/power/rockchip-cpu-avs.txt |  37 +++
 drivers/power/avs/Kconfig                          |   8 +
 drivers/power/avs/Makefile                         |   1 +
 drivers/power/avs/rockchip-cpu-avs.c               | 314 +++++++++++++++++++++
 4 files changed, 360 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/rockchip-cpu-avs.txt
 create mode 100644 drivers/power/avs/rockchip-cpu-avs.c

diff --git a/Documentation/devicetree/bindings/power/rockchip-cpu-avs.txt b/Documentation/devicetree/bindings/power/rockchip-cpu-avs.txt
new file mode 100644
index 0000000..90f6b08
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/rockchip-cpu-avs.txt

@@ -0,0 +1,37 @@
+Rockchip cpu avs device tree bindings
+-------------------------------------
+
+Under the same frequency, the operating voltage tends to decrease with
+increasing leakage. so it is necessary to adjust opp's voltage according
+to leakage for power.
+
+
+Required properties:
+- compatible: Should be one of the following.
+  - "rockchip,rk3399-cpu-avs" - for RK3399 SoCs.
+- leakage-volt-<name>: Named leakage-volt property. At runtime, the
+  platform can find a cpu's cluster_id according to it's cpu_id and match
+  leakage-volt-<name> property. The property is an array of 3-tuples
+  items, and each item consists of leakage and voltage like
+  <min-leakage-mA max-leakage-mA vol-uV>.
+	min-leakage: minimum leakage in mA.
+	max-leakage: maximum leakage in mA.
+	vol: voltage in microvolt.