Commit graph

3 commits

Author SHA1 Message Date
Allen Martin
a51f7de161 Tegra: clk: always use find_best_divider() for periph clocks
When adjusting peripheral clocks always use find_best_divider()
instead of clk_get_divider() even when a secondary divider is not
available.  In the case where is requested clock is too slow to be
derived from the parent clock this allows a best effort to get close
to the requested clock.

This comes up for commands like "sf" where the user can pass a clock
speed on the command line or "sspi" where the clock is hardcoded to
1MHz, but the Tegra114 SPI controller can't go that low.

Signed-off-by: Allen Martin <amartin@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2013-05-28 12:58:42 -07:00
Tom Warren
b40f734af9 Tegra114: Initialize System Counter (TSC) with osc frequency
T114 needs the SYSCTR0 counter initialized so the TSC can be
read by the kernel. Do it in the bootloader since it's a write-once
deal (secure/non-secure mode dependent).

Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
2013-04-15 11:01:38 -07:00
Tom Warren
f29f086a09 Tegra: Move common clock code to arch/arm/cpu/tegra-common/clock.c
This 'commonizes' much of the clock/pll code. SoC-dependent code
and tables are left in arch/cpu/tegraXXX-common/clock.c

Some T30 tables needed whitespace fixes due to checkpatch complaints.

Signed-off-by: Tom Warren <twarren@nvidia.com>
2013-02-11 10:35:24 -07:00