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SubjectRe: [PATCH V3] arm64: tegra: add topology data for Tegra194 cpu
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The patch V3 adopted changes suggested by Thierry.


On 2/13/19 8:33 AM, Bo Yan wrote:
> The xavier CPU architecture includes 8 CPU cores organized in
> 4 clusters. Add cpu-map data for topology initialization, this
> fixes the topology information in
> /sys/devices/system/cpu/cpu[n]/topology
>
> Signed-off-by: Bo Yan <byan@nvidia.com>
> ---
> V3: Replaced phandles with full path to CPU node
> V2: remove cache nodes, add topology data only
>
> arch/arm64/boot/dts/nvidia/tegra194.dtsi | 42 ++++++++++++++++++++++++++++++++
> 1 file changed, 42 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> index 6dfa1ca..708d20c 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> @@ -870,6 +870,48 @@
> #address-cells = <1>;
> #size-cells = <0>;
>
> + cpu-map {
> + cluster0 {
> + core0 {
> + cpu = <&{/cpus/cpu@0}>;
> + };
> +
> + core1 {
> + cpu = <&{/cpus/cpu@1}>;
> + };
> + };
> +
> + cluster1 {
> + core0 {
> + cpu = <&{/cpus/cpu@2}>;
> + };
> +
> + core1 {
> + cpu = <&{/cpus/cpu@3}>;
> + };
> + };
> +
> + cluster2 {
> + core0 {
> + cpu = <&{/cpus/cpu@4}>;
> + };
> +
> + core1 {
> + cpu = <&{/cpus/cpu@5}>;
> + };
> + };
> +
> + cluster3 {
> + core0 {
> + cpu = <&{/cpus/cpu@6}>;
> + };
> +
> + core1 {
> + cpu = <&{/cpus/cpu@7}>;
> + };
> + };
> + };
> +
> cpu@0 {
> compatible = "nvidia,tegra194-carmel", "arm,armv8";
> device_type = "cpu";
>

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