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| author |   Mikko Perttunen <mperttunen@nvidia.com> | 2019-01-25 11:22:55 +0100 |
|---|---|---|
| committer |   Thierry Reding <treding@nvidia.com> | 2019-01-25 16:18:24 +0100 |
| commit | e247deae1a55089cb04cc25c91faeba083d0c39c (patch) | |
| tree | 2c85583a47f879f93b7751e54fe668fbfb528a31 /include/soc | |
| parent | soc/tegra: pmc: Explicitly initialize all fields (diff) | |
| download | linux-dev-e247deae1a55089cb04cc25c91faeba083d0c39c.tar.xz linux-dev-e247deae1a55089cb04cc25c91faeba083d0c39c.zip | |
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')
0 files changed, 0 insertions, 0 deletions