On 2024-10-10 12:19, Dragan Simic wrote:
Until the TSADC, thermal zones, thermal trips and cooling maps are defined in the RK3308 SoC dtsi, none of the CPU OPPs except the slowest one may be enabled under any circumstances. Allowing the DVFS to scale the CPU cores up without even just the critical CPU thermal trip in place can rather easily result in thermal runaways and damaged SoCs, which is bad.
Thus, leave only the lowest available CPU OPP enabled for now.
Fixes: 6913c45239fd ("arm64: dts: rockchip: Add core dts for RK3308 SOC") Cc: stable@vger.kernel.org Signed-off-by: Dragan Simic dsimic@manjaro.org
As a note, I'll hopefully get back with the proper implementation of the thermal configuration for the RK3308, but not before the 6.14 merge window. In the meantime, let's stick to having only the lowest CPU OPP in place, as changed in this patch.
arch/arm64/boot/dts/rockchip/rk3308.dtsi | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3308.dtsi b/arch/arm64/boot/dts/rockchip/rk3308.dtsi index 31c25de2d689..a7698e1f6b9e 100644 --- a/arch/arm64/boot/dts/rockchip/rk3308.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3308.dtsi @@ -120,16 +120,19 @@ opp-600000000 { opp-hz = /bits/ 64 <600000000>; opp-microvolt = <950000 950000 1340000>; clock-latency-ns = <40000>;
status = "disabled";status = "disabled";status = "disabled";