From: Thierry Reding <treding@xxxxxxxxxx> According to ePAPR, CPUs that are quiescent should have the "status" property of the corresponding device tree node set to "disabled". Since all but the boot CPU are in a quiescent state on boot, mark all secondary CPUs as "disabled". Note that this does not have an impact on SMP. Linux will still be able to boot these secondary CPUs like before. Signed-off-by: Thierry Reding <treding@xxxxxxxxxx> --- arch/arm64/boot/dts/nvidia/tegra194.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi index 59485976db64..ea165b2998f9 100644 --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi @@ -1661,6 +1661,7 @@ compatible = "nvidia,tegra194-carmel"; device_type = "cpu"; reg = <0x001>; + status = "disabled"; enable-method = "psci"; i-cache-size = <131072>; i-cache-line-size = <64>; @@ -1675,6 +1676,7 @@ compatible = "nvidia,tegra194-carmel"; device_type = "cpu"; reg = <0x100>; + status = "disabled"; enable-method = "psci"; i-cache-size = <131072>; i-cache-line-size = <64>; @@ -1689,6 +1691,7 @@ compatible = "nvidia,tegra194-carmel"; device_type = "cpu"; reg = <0x101>; + status = "disabled"; enable-method = "psci"; i-cache-size = <131072>; i-cache-line-size = <64>; @@ -1703,6 +1706,7 @@ compatible = "nvidia,tegra194-carmel"; device_type = "cpu"; reg = <0x200>; + status = "disabled"; enable-method = "psci"; i-cache-size = <131072>; i-cache-line-size = <64>; @@ -1717,6 +1721,7 @@ compatible = "nvidia,tegra194-carmel"; device_type = "cpu"; reg = <0x201>; + status = "disabled"; enable-method = "psci"; i-cache-size = <131072>; i-cache-line-size = <64>; @@ -1731,6 +1736,7 @@ compatible = "nvidia,tegra194-carmel"; device_type = "cpu"; reg = <0x300>; + status = "disabled"; enable-method = "psci"; i-cache-size = <131072>; i-cache-line-size = <64>; @@ -1745,6 +1751,7 @@ compatible = "nvidia,tegra194-carmel"; device_type = "cpu"; reg = <0x301>; + status = "disabled"; enable-method = "psci"; i-cache-size = <131072>; i-cache-line-size = <64>; -- 2.23.0
