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authorMikko Perttunen <mperttunen@nvidia.com>2019-01-25 11:22:55 +0100
committerThierry Reding <treding@nvidia.com>2019-01-25 16:18:24 +0100
commite247deae1a55089cb04cc25c91faeba083d0c39c (patch)
tree2c85583a47f879f93b7751e54fe668fbfb528a31 /include/soc
parentfa3bc04ef8ccccfe47db1f4030a7a43569956402 (diff)
soc/tegra: pmc: Support systems where PMC is marked secure
On Tegra210 systems with new enough boot software, direct register accesses to PMC register space from the non-secure world are not allowed. Instead a monitor call may be used to read and write PMC registers. Add code to detect such a system by attempting to write a scratch register and detecting if the write happened or not. If not, we switch to doing all register accesses through the monitor call. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com>
Diffstat (limited to 'include/soc')
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