[PATCH] arm64: dts: rockchip: Prevent thermal runaways in RK3308 SoC dtsi

[Dragan Simic]

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 at vger.kernel.org
Signed-off-by: Dragan Simic <dsimic at manjaro.org>
---
 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";
 		};
 		opp-816000000 {
 			opp-hz = /bits/ 64 <816000000>;
 			opp-microvolt = <1025000 1025000 1340000>;
 			clock-latency-ns = <40000>;
+			status = "disabled";
 		};
 		opp-1008000000 {
 			opp-hz = /bits/ 64 <1008000000>;
 			opp-microvolt = <1125000 1125000 1340000>;
 			clock-latency-ns = <40000>;
+			status = "disabled";
 		};
 	};