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authorStephen Warren <swarren@nvidia.com>2012-01-03 12:05:47 +0000
committerOlof Johansson <olof@lixom.net>2012-02-06 18:24:59 -0800
commite53b7d87cc375fbe428551651094fb676764aae3 (patch)
treedaea897501425cdd5bf68ed6f9b8eeb0e266993b /kernel/gcov/gcov.h
parentcb3732d0dc9df198c889a26210b6b27bc51a1c4a (diff)
ARM: tegra: Support Tegra30 in decompressor UART setup
On Tegra20, the UART clock runs at 216MHz, whereas on Tegra30 it runs at 408MHz. Modify arch_decomp_setup() to detect Tegra20-vs-Tegra30 at run- time, and program the correct divisor. This makes uncompressor messages work correctly on Tegra30. This also fixes early printk, assuming zImage is used and this setup code runs. v2: Use CHIPID register to differentiate between chips, rather than a GIC register. This should be more future-proof. Volatile is required to prevent the compiler transforming the 32-bit apb_misc register read into an 8-bit read of address 1 higher, since the HW only supports 32- bit accesses, and will hang on an 8-bit access. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'kernel/gcov/gcov.h')
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