diff mbox series

[08/10] ARM64: dts: renesas: Add all CPUs in cooling maps

Message ID f2116377ab65e4b3ece39c32f54ac3eec2fb7d8c.1542362530.git.viresh.kumar@linaro.org (mailing list archive)
State New, archived
Headers show
Series ARM64: dts: Fix incomplete cooling-maps | expand

Commit Message

Viresh Kumar Nov. 16, 2018, 10:04 a.m. UTC
Each CPU can (and does) participate in cooling down the system but the
DT only captures a handful of them, normally CPU0, in the cooling maps.
Things work by chance currently as under normal circumstances its the
first CPU of each cluster which is used by the operating systems to
probe the cooling devices. But as soon as this CPU ordering changes and
any other CPU is used to bring up the cooling device, we will start
seeing failures.

Also the DT is rather incomplete when we list only one CPU in the
cooling maps, as the hardware doesn't have any such limitations.

Update cooling maps to include all devices affected by individual trip
points.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 arch/arm64/boot/dts/renesas/r8a7795.dtsi | 15 ++++++++++++---
 arch/arm64/boot/dts/renesas/r8a7796.dtsi |  6 +++---
 2 files changed, 15 insertions(+), 6 deletions(-)

Comments

Simon Horman Nov. 23, 2018, 12:51 p.m. UTC | #1
On Fri, Nov 16, 2018 at 03:34:31PM +0530, Viresh Kumar wrote:
> Each CPU can (and does) participate in cooling down the system but the
> DT only captures a handful of them, normally CPU0, in the cooling maps.
> Things work by chance currently as under normal circumstances its the
> first CPU of each cluster which is used by the operating systems to
> probe the cooling devices. But as soon as this CPU ordering changes and
> any other CPU is used to bring up the cooling device, we will start
> seeing failures.
> 
> Also the DT is rather incomplete when we list only one CPU in the
> cooling maps, as the hardware doesn't have any such limitations.
> 
> Update cooling maps to include all devices affected by individual trip
> points.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

Thanks, applied for v4.21.
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
index a79c8d369e0b..3a662df32143 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
@@ -2878,7 +2878,10 @@ 
 			cooling-maps {
 				map0 {
 					trip = <&sensor1_passive>;
-					cooling-device = <&a57_0 4 4>;
+					cooling-device = <&a57_0 4 4>,
+							 <&a57_1 4 4>,
+							 <&a57_2 4 4>,
+							 <&a57_3 4 4>;
 				};
 			};
 		};
@@ -2904,7 +2907,10 @@ 
 			cooling-maps {
 				map0 {
 					trip = <&sensor2_passive>;
-					cooling-device = <&a57_0 4 4>;
+					cooling-device = <&a57_0 4 4>,
+							 <&a57_1 4 4>,
+							 <&a57_2 4 4>,
+							 <&a57_3 4 4>;
 				};
 			};
 		};
@@ -2930,7 +2936,10 @@ 
 			cooling-maps {
 				map0 {
 					trip = <&sensor3_passive>;
-					cooling-device = <&a57_0 4 4>;
+					cooling-device = <&a57_0 4 4>,
+							 <&a57_1 4 4>,
+							 <&a57_2 4 4>,
+							 <&a57_3 4 4>;
 				};
 			};
 		};
diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index 1ec6aaa520c1..dd95e937f87a 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -2526,7 +2526,7 @@ 
 			cooling-maps {
 				map0 {
 					trip = <&sensor1_passive>;
-					cooling-device = <&a57_0 5 5>;
+					cooling-device = <&a57_0 5 5>, <&a57_1 5 5>;
 				};
 			};
 		};
@@ -2552,7 +2552,7 @@ 
 			cooling-maps {
 				map0 {
 					trip = <&sensor2_passive>;
-					cooling-device = <&a57_0 5 5>;
+					cooling-device = <&a57_0 5 5>, <&a57_1 5 5>;
 				};
 			};
 		};
@@ -2578,7 +2578,7 @@ 
 			cooling-maps {
 				map0 {
 					trip = <&sensor3_passive>;
-					cooling-device = <&a57_0 5 5>;
+					cooling-device = <&a57_0 5 5>, <&a57_1 5 5>;
 				};
 			};
 		};