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Tegra410 and Tegra241 deprecate the HIDREV register. The recommended method is to use ARM SMCCC to retrieve the chip ID, major and minor revisions, and platform information. Prefer ARM SMCCC when the platform supports it; fall back to HIDREV otherwise. Behavior on older Tegra SoCs that do not support ARM SMCCC remains unchanged. Signed-off-by: Kartik Rajput <kkartik@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>