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If the FUSE registers are accessed but the region is not mapped, warn
and return 0. This potentially catches hard to diagnose bugs because the
accesses happen before any kernel log output.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tegra210 and Tegra186 are mostly compatible from a fuses point of view.
However, speedo support is implemented in the BPMP firmware, hence the
implementation needs to be skipped in the fuses driver.
Signed-off-by: Timo Alho <talho@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
[treding@nvidia.com: reword commit message]
Signed-off-by: Thierry Reding <treding@nvidia.com>
The offset of the first spare bit register on Tegra210 is 0x380, but
account for the fixed offset of 0x100 in the fuse accessor.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The offset of the first spare bit register on Tegra124 is 0x300, but
account for the fixed offset of 0x100 in the fuse accessor.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The offset of the first spare bit register on Tegra114 is 0x280, but
account for the fixed offset of 0x100 in the fuse accessor.
Signed-off-by: Thierry Reding <treding@nvidia.com>
There's a mixture of core_* and soc_* prefixes for variables storing
information related to the VDD_CORE rail. Choose one (soc_*) and use it
more consistently.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Unifying the drivers makes it easier to restrict the legacy probing
paths to 32-bit ARM. This in turn will come in handy as support for
new 64-bit ARM SoCs is added.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tegra132 is very similar to Tegra124 from a peripheral point of view and
uses the same fuse controller.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Implement fuse driver for Tegra20, Tegra30, Tegra114 and Tegra124. This
replaces functionality previously provided in arch/arm/mach-tegra, which
is removed in this patch.
While at it, move the only user of the global tegra_revision variable
over to tegra_sku_info.revision and export tegra_fuse_readl() to allow
drivers to read calibration fuses.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
