Tegra20 has a Cortex A9 r1p1, and Tegra30 has a Cortex A9 r2p9. As such,
some CPU errata exist, and must be worked around.
These must be worked around in the bootloader, since in general, the
kernel (especially a multi-platform kernel) needs to support being
launched in non-secure mode (normal world), and hence may not be able
to write to the CP15 register to enable these workarounds.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Tested all 5 'buses', i2c probe enumerates device addresses on all
but dev 4 (I2C4) [no devices on that bus on my Cardhu].
Note that this uses the extant tegra_i2c.c driver w/o modification.
Signed-off-by: Tom Warren <twarren@nvidia.com>
This build is stripped down. It boots to the command prompt.
GPIO is the only peripheral supported. Others TBD.
include/configs/tegra-common.h now holds common config options
for Tegra SoCs.
Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Stephen Warren
Tom Warren
Tom Warren