Hello Alexey,
On 2024-01-30 19:21, Alexey Charkov wrote:
This introduces additional OPPs that share the same voltage as
another OPP already present in the .dtsi but with lower frequency.
The idea is to try and limit system throughput more gradually upon
reaching the throttling condition for workloads that are close to
sustainable power already, thus avoiding needless performance loss.
My limited synthetic benchmarking [1] showed around 3.8% performance
benefit when these are in place, other things equal (not meant to
be comprehensive though).
I'm fine with this two-patch approach, so this important new feature
can be merged quicker, hopefully in the current merge window. We can
add more OPPs later, after the additional testing is performed, of
course if all checks out as expected.
[1]
https://lore.kernel.org/linux-rockchip/CABjd4YxqarUCbZ-a2XLe3TWJ-qjphGkyq=wDnctnEhdoSdPPpw@xxxxxxxxxxxxxx/T/#me92aa0ee25e6eeb1d1501ce85f5af4e58b3b13c5
Signed-off-by: Alexey Charkov <alchark@xxxxxxxxx>
---
arch/arm64/boot/dts/rockchip/rk3588s.dtsi | 87
+++++++++++++++++++++++++++++++
1 file changed, 87 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
index af8b932a04c1..506676985a7e 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
@@ -360,6 +360,21 @@ cluster0_opp_table: opp-table-cluster0 {
compatible = "operating-points-v2";
opp-shared;
+ opp-408000000 {
+ opp-hz = /bits/ 64 <408000000>;
+ opp-microvolt = <675000 675000 950000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <675000 675000 950000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-816000000 {
+ opp-hz = /bits/ 64 <816000000>;
+ opp-microvolt = <675000 675000 950000>;
+ clock-latency-ns = <40000>;
+ };
opp-1008000000 {
opp-hz = /bits/ 64 <1008000000>;
opp-microvolt = <675000 675000 950000>;
@@ -392,6 +407,27 @@ cluster1_opp_table: opp-table-cluster1 {
compatible = "operating-points-v2";
opp-shared;
+ opp-408000000 {
+ opp-hz = /bits/ 64 <408000000>;
+ opp-microvolt = <675000 675000 1000000>;
+ clock-latency-ns = <40000>;
+ opp-suspend;
+ };
+ opp-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <675000 675000 1000000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-816000000 {
+ opp-hz = /bits/ 64 <816000000>;
+ opp-microvolt = <675000 675000 1000000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-1008000000 {
+ opp-hz = /bits/ 64 <1008000000>;
+ opp-microvolt = <675000 675000 1000000>;
+ clock-latency-ns = <40000>;
+ };
opp-1200000000 {
opp-hz = /bits/ 64 <1200000000>;
opp-microvolt = <675000 675000 1000000>;
@@ -422,6 +458,21 @@ opp-2208000000 {
opp-microvolt = <987500 987500 1000000>;
clock-latency-ns = <40000>;
};
+ opp-2256000000 {
+ opp-hz = /bits/ 64 <2256000000>;
+ opp-microvolt = <1000000 1000000 1000000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-2304000000 {
+ opp-hz = /bits/ 64 <2304000000>;
+ opp-microvolt = <1000000 1000000 1000000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-2352000000 {
+ opp-hz = /bits/ 64 <2352000000>;
+ opp-microvolt = <1000000 1000000 1000000>;
+ clock-latency-ns = <40000>;
+ };
opp-2400000000 {
opp-hz = /bits/ 64 <2400000000>;
opp-microvolt = <1000000 1000000 1000000>;
@@ -433,6 +484,27 @@ cluster2_opp_table: opp-table-cluster2 {
compatible = "operating-points-v2";
opp-shared;
+ opp-408000000 {
+ opp-hz = /bits/ 64 <408000000>;
+ opp-microvolt = <675000 675000 1000000>;
+ clock-latency-ns = <40000>;
+ opp-suspend;
+ };
+ opp-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <675000 675000 1000000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-816000000 {
+ opp-hz = /bits/ 64 <816000000>;
+ opp-microvolt = <675000 675000 1000000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-1008000000 {
+ opp-hz = /bits/ 64 <1008000000>;
+ opp-microvolt = <675000 675000 1000000>;
+ clock-latency-ns = <40000>;
+ };
opp-1200000000 {
opp-hz = /bits/ 64 <1200000000>;
opp-microvolt = <675000 675000 1000000>;
@@ -463,6 +535,21 @@ opp-2208000000 {
opp-microvolt = <987500 987500 1000000>;
clock-latency-ns = <40000>;
};
+ opp-2256000000 {
+ opp-hz = /bits/ 64 <2256000000>;
+ opp-microvolt = <1000000 1000000 1000000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-2304000000 {
+ opp-hz = /bits/ 64 <2304000000>;
+ opp-microvolt = <1000000 1000000 1000000>;
+ clock-latency-ns = <40000>;
+ };
+ opp-2352000000 {
+ opp-hz = /bits/ 64 <2352000000>;
+ opp-microvolt = <1000000 1000000 1000000>;
+ clock-latency-ns = <40000>;
+ };
opp-2400000000 {
opp-hz = /bits/ 64 <2400000000>;
opp-microvolt = <1000000 1000000 1000000>;
