Add an operating-points table and cooling entry to the GPU on the RK3328 SoC to improve its performance. According to its datasheet[1] the maximum frequency of the Mali-450 MP2 GPU found on the RK3328 SoC is 500MHz. On my rock64 device, under x11, glmark2-es2 performance increased from around 60 to just over 100. Same device running glmark2-es2 under wayland/weston improved from just over 100 to just over 200. [1] https://rockchip.fr/RK3328%20datasheet%20V1.2.pdf Signed-off-by: Trevor Woerner <twoerner@xxxxxxxxx> --- arch/arm64/boot/dts/rockchip/rk3328.dtsi | 26 +++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi index 8c821acb21ff..5e1dcf71e414 100644 --- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi @@ -532,7 +532,8 @@ map0 { cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, - <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; contribution = <4096>; }; }; @@ -617,6 +618,29 @@ gpu: gpu@ff300000 { clocks = <&cru ACLK_GPU>, <&cru ACLK_GPU>; clock-names = "bus", "core"; resets = <&cru SRST_GPU_A>; + operating-points-v2 = <&gpu_opp_table>; + #cooling-cells = <2>; + }; + + gpu_opp_table: gpu-opp-table { + compatible = "operating-points-v2"; + + opp-200000000 { + opp-hz = /bits/ 64 <200000000>; + opp-microvolt = <1100000>; + }; + opp-300000000 { + opp-hz = /bits/ 64 <300000000>; + opp-microvolt = <1100000>; + }; + opp-400000000 { + opp-hz = /bits/ 64 <400000000>; + opp-microvolt = <1100000>; + }; + opp-500000000 { + opp-hz = /bits/ 64 <500000000>; + opp-microvolt = <1100000>; + }; }; h265e_mmu: iommu@ff330200 { -- 2.30.0.rc0
