[PATCH V5 3/3] OPP: Add binding for 'opp-suspend'
From: viresh.kumar@linaro.org (Viresh Kumar)
Date: 2015-05-20 03:41:40
Also in:
linux-devicetree, linux-pm
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
On few platforms, for power efficiency, we want the device to be configured for a specific OPP while we put the device in suspend state. Add an optional property in operating-points-v2 bindings for that. Suggested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- Documentation/devicetree/bindings/power/opp.txt | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/Documentation/devicetree/bindings/power/opp.txt b/Documentation/devicetree/bindings/power/opp.txt
index 7f30d9b07db7..880f5e14b6e2 100644
--- a/Documentation/devicetree/bindings/power/opp.txt
+++ b/Documentation/devicetree/bindings/power/opp.txt@@ -72,6 +72,8 @@ This describes the OPPs belonging to a device. This node can have following Missing property means devices have independent clock/voltage/current lines, but they share OPP tables. +- opp-suspend: Phandle of the OPP to set while device is suspended. + * OPP Node
@@ -143,9 +145,10 @@ Example 1: Single cluster Dual-core ARM cortex A9, switch DVFS states together. cpu0_opp: opp0 { compatible = "operating-points-v2"; + opp-suspend = <&suspend_opp>; opp-shared; - entry00 { + suspend-opp: entry00 { opp-hz = <1000000000>; opp-microvolt = <970000 975000 985000>; opp-microamp = <70000>;
@@ -217,13 +220,14 @@ independently. cpu0_opp: opp0 { compatible = "operating-points-v2"; + opp-suspend = <&suspend_opp>; /* * Missing opp-shared property means CPUs switch DVFS states * independently. */ - entry00 { + suspend-opp: entry00 { opp-hz = <1000000000>; opp-microvolt = <970000 975000 985000>; opp-microamp = <70000>;
@@ -296,9 +300,10 @@ DVFS state together. cluster0_opp: opp0 { compatible = "operating-points-v2"; + opp-suspend = <&suspend_opp0>; opp-shared; - entry00 { + suspend-opp0: entry00 { opp-hz = <1000000000>; opp-microvolt = <970000 975000 985000>; opp-microamp = <70000>;
@@ -321,9 +326,10 @@ DVFS state together. cluster1_opp: opp1 { compatible = "operating-points-v2"; + opp-suspend = <&suspend_opp1>; opp-shared; - entry10 { + suspend-opp1: entry10 { opp-hz = <1300000000>; opp-microvolt = <1045000 1050000 1055000>; opp-microamp = <95000>;
--
2.4.0