diff options
| author | Dragan Simic <dsimic@manjaro.org> | 2024-11-02 04:08:59 +0100 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2024-11-09 12:53:09 +0100 |
| commit | 0e183fcc92b0eaa13b33b39846d86c3d65b8330a (patch) | |
| tree | fc5f40ab4bb98148a85e0a66229c8caac1fadd05 /arch/arm64/boot/dts | |
| parent | 37e4ad9c795a725e7308089e9d59d094115138dc (diff) | |
arm64: dts: rockchip: Update CPU OPP voltages in RK356x SoC dtsi
Update the lower/upper voltage limits and the exact voltages for the Rockchip
RK356x CPU OPPs, using the most conservative values (i.e. the highest per-OPP
voltages) found in the vendor kernel source. [1]
Using the most conservative per-OPP voltages ensures reliable CPU operation
regardless of the actual CPU binning, with the downside of possibly using
a bit more power for the CPU cores than absolutely needed.
Additionally, fill in the missing "clock-latency-ns" CPU OPP properties, using
the values found in the vendor kernel source. [1]
[1] https://raw.githubusercontent.com/rockchip-linux/kernel/f8b9431ee38ed561650be7092ab93f564598daa9/arch/arm64/boot/dts/rockchip/rk3568.dtsi
Related-to: eb665b1c06bc ("arm64: dts: rockchip: Update GPU OPP voltages in RK356x SoC dtsi")
Signed-off-by: Dragan Simic <dsimic@manjaro.org>
Link: https://lore.kernel.org/r/f816cd24b62742dd05a1b7c6fe162bb581c9b3bf.1730516702.git.dsimic@manjaro.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'arch/arm64/boot/dts')
| -rw-r--r-- | arch/arm64/boot/dts/rockchip/rk3568.dtsi | 1 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/rockchip/rk356x.dtsi | 18 |
2 files changed, 13 insertions, 6 deletions
diff --git a/arch/arm64/boot/dts/rockchip/rk3568.dtsi b/arch/arm64/boot/dts/rockchip/rk3568.dtsi index 0946310e8c12..5c54898f6ed1 100644 --- a/arch/arm64/boot/dts/rockchip/rk3568.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3568.dtsi @@ -273,6 +273,7 @@ opp-1992000000 { opp-hz = /bits/ 64 <1992000000>; opp-microvolt = <1150000 1150000 1150000>; + clock-latency-ns = <40000>; }; }; diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi index 0ee0ada6f0ab..534593f2ed0b 100644 --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi @@ -134,39 +134,45 @@ opp-408000000 { opp-hz = /bits/ 64 <408000000>; - opp-microvolt = <900000 900000 1150000>; + opp-microvolt = <850000 850000 1150000>; clock-latency-ns = <40000>; }; opp-600000000 { opp-hz = /bits/ 64 <600000000>; - opp-microvolt = <900000 900000 1150000>; + opp-microvolt = <850000 850000 1150000>; + clock-latency-ns = <40000>; }; opp-816000000 { opp-hz = /bits/ 64 <816000000>; - opp-microvolt = <900000 900000 1150000>; + opp-microvolt = <850000 850000 1150000>; + clock-latency-ns = <40000>; opp-suspend; }; opp-1104000000 { opp-hz = /bits/ 64 <1104000000>; opp-microvolt = <900000 900000 1150000>; + clock-latency-ns = <40000>; }; opp-1416000000 { opp-hz = /bits/ 64 <1416000000>; - opp-microvolt = <900000 900000 1150000>; + opp-microvolt = <1025000 1025000 1150000>; + clock-latency-ns = <40000>; }; opp-1608000000 { opp-hz = /bits/ 64 <1608000000>; - opp-microvolt = <975000 975000 1150000>; + opp-microvolt = <1100000 1100000 1150000>; + clock-latency-ns = <40000>; }; opp-1800000000 { opp-hz = /bits/ 64 <1800000000>; - opp-microvolt = <1050000 1050000 1150000>; + opp-microvolt = <1150000 1150000 1150000>; + clock-latency-ns = <40000>; }; }; |